refactor the rest of the FilterProcessor code

src/ImageSharp/Processing/BrightnessExtensions.cs

@@ -19,13 +19,11 @@ namespace SixLabors.ImageSharp.Processing
         /// A value of 0 will create an image that is completely black. A value of 1 leaves the input unchanged.
         /// Other values are linear multipliers on the effect. Values of an amount over 1 are allowed, providing brighter results.
         /// </remarks>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="amount">The proportion of the conversion. Must be greater than or equal to 0.</param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Brightness<TPixel>(this IImageProcessingContext<TPixel> source, float amount)
-           where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new BrightnessProcessor<TPixel>(amount));
+        public static IImageProcessingContext Brightness(this IImageProcessingContext source, float amount)
+            => source.ApplyProcessor(new BrightnessProcessor(amount));
 
         /// <summary>
         /// Alters the brightness component of the image.
@@ -34,15 +32,13 @@ namespace SixLabors.ImageSharp.Processing
         /// A value of 0 will create an image that is completely black. A value of 1 leaves the input unchanged.
         /// Other values are linear multipliers on the effect. Values of an amount over 1 are allowed, providing brighter results.
         /// </remarks>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="amount">The proportion of the conversion. Must be greater than or equal to 0.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Brightness<TPixel>(this IImageProcessingContext<TPixel> source, float amount, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new BrightnessProcessor<TPixel>(amount), rectangle);
+        public static IImageProcessingContext Brightness(this IImageProcessingContext source, float amount, Rectangle rectangle)
+            => source.ApplyProcessor(new BrightnessProcessor(amount), rectangle);
     }
 }

src/ImageSharp/Processing/ColorBlindnessExtensions.cs

@@ -16,49 +16,44 @@ namespace SixLabors.ImageSharp.Processing
         /// <summary>
         /// Applies the given colorblindness simulator to the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="colorBlindness">The type of color blindness simulator to apply.</param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> ColorBlindness<TPixel>(this IImageProcessingContext<TPixel> source, ColorBlindnessMode colorBlindness)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(GetProcessor<TPixel>(colorBlindness));
+        public static IImageProcessingContext ColorBlindness(this IImageProcessingContext source, ColorBlindnessMode colorBlindness)
+            => source.ApplyProcessor(GetProcessor(colorBlindness));
 
         /// <summary>
         /// Applies the given colorblindness simulator to the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="colorBlindnessMode">The type of color blindness simulator to apply.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> ColorBlindness<TPixel>(this IImageProcessingContext<TPixel> source, ColorBlindnessMode colorBlindnessMode, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(GetProcessor<TPixel>(colorBlindnessMode), rectangle);
+        public static IImageProcessingContext ColorBlindness(this IImageProcessingContext source, ColorBlindnessMode colorBlindnessMode, Rectangle rectangle)
+            => source.ApplyProcessor(GetProcessor(colorBlindnessMode), rectangle);
 
-        private static IImageProcessor<TPixel> GetProcessor<TPixel>(ColorBlindnessMode colorBlindness)
-            where TPixel : struct, IPixel<TPixel>
+        private static IImageProcessor GetProcessor(ColorBlindnessMode colorBlindness)
         {
             switch (colorBlindness)
             {
                 case ColorBlindnessMode.Achromatomaly:
-                    return new AchromatomalyProcessor<TPixel>();
+                    return new AchromatomalyProcessor();
                 case ColorBlindnessMode.Achromatopsia:
-                    return new AchromatopsiaProcessor<TPixel>();
+                    return new AchromatopsiaProcessor();
                 case ColorBlindnessMode.Deuteranomaly:
-                    return new DeuteranomalyProcessor<TPixel>();
+                    return new DeuteranomalyProcessor();
                 case ColorBlindnessMode.Deuteranopia:
-                    return new DeuteranopiaProcessor<TPixel>();
+                    return new DeuteranopiaProcessor();
                 case ColorBlindnessMode.Protanomaly:
-                    return new ProtanomalyProcessor<TPixel>();
+                    return new ProtanomalyProcessor();
                 case ColorBlindnessMode.Protanopia:
-                    return new ProtanopiaProcessor<TPixel>();
+                    return new ProtanopiaProcessor();
                 case ColorBlindnessMode.Tritanomaly:
-                    return new TritanomalyProcessor<TPixel>();
+                    return new TritanomalyProcessor();
                 default:
-                    return new TritanopiaProcessor<TPixel>();
+                    return new TritanopiaProcessor();
             }
         }
     }

src/ImageSharp/Processing/ContrastExtensions.cs

@@ -8,7 +8,7 @@ using SixLabors.Primitives;
 namespace SixLabors.ImageSharp.Processing
 {
     /// <summary>
-    /// Adds extensions that allow the alteration of the contrast component to the <see cref="Image{TPixel}"/> type.
+    /// Adds extensions that allow the alteration of the contrast component to the <see cref="Image"/> type.
     /// </summary>
     public static class ContrastExtensions
     {
@@ -19,13 +19,11 @@ namespace SixLabors.ImageSharp.Processing
         /// A value of 0 will create an image that is completely gray. A value of 1 leaves the input unchanged.
         /// Other values are linear multipliers on the effect. Values of an amount over 1 are allowed, providing results with more contrast.
         /// </remarks>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="amount">The proportion of the conversion. Must be greater than or equal to 0.</param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Contrast<TPixel>(this IImageProcessingContext<TPixel> source, float amount)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new ContrastProcessor<TPixel>(amount));
+        public static IImageProcessingContext Contrast(this IImageProcessingContext source, float amount)
+            => source.ApplyProcessor(new ContrastProcessor(amount));
 
         /// <summary>
         /// Alters the contrast component of the image.
@@ -34,15 +32,13 @@ namespace SixLabors.ImageSharp.Processing
         /// A value of 0 will create an image that is completely gray. A value of 1 leaves the input unchanged.
         /// Other values are linear multipliers on the effect. Values of an amount over 1 are allowed, providing results with more contrast.
         /// </remarks>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="amount">The proportion of the conversion. Must be greater than or equal to 0.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Contrast<TPixel>(this IImageProcessingContext<TPixel> source, float amount, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new ContrastProcessor<TPixel>(amount), rectangle);
+        public static IImageProcessingContext Contrast(this IImageProcessingContext source, float amount, Rectangle rectangle)
+            => source.ApplyProcessor(new ContrastProcessor(amount), rectangle);
     }
 }

src/ImageSharp/Processing/GrayscaleExtensions.cs

@@ -9,56 +9,48 @@ using SixLabors.Primitives;
 namespace SixLabors.ImageSharp.Processing
 {
     /// <summary>
-    /// Adds extensions that allow the application of grayscale toning to the <see cref="Image{TPixel}"/> type.
+    /// Adds extensions that allow the application of grayscale toning to the <see cref="Image"/> type.
     /// </summary>
     public static class GrayscaleExtensions
     {
         /// <summary>
         /// Applies <see cref="GrayscaleMode.Bt709"/> grayscale toning to the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
-        /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Grayscale<TPixel>(this IImageProcessingContext<TPixel> source)
-            where TPixel : struct, IPixel<TPixel>
+        /// <returns>The <see cref="IImageProcessingContext"/>.</returns>
+        public static IImageProcessingContext Grayscale(this IImageProcessingContext source)
             => Grayscale(source, GrayscaleMode.Bt709);
 
         /// <summary>
         /// Applies <see cref="GrayscaleMode.Bt709"/> grayscale toning to the image using the given amount.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="amount">The proportion of the conversion. Must be between 0 and 1.</param>
-        /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Grayscale<TPixel>(this IImageProcessingContext<TPixel> source, float amount)
-            where TPixel : struct, IPixel<TPixel>
+        /// <returns>The <see cref="IImageProcessingContext"/>.</returns>
+        public static IImageProcessingContext Grayscale(this IImageProcessingContext source, float amount)
             => Grayscale(source, GrayscaleMode.Bt709, amount);
 
         /// <summary>
         /// Applies grayscale toning to the image with the given <see cref="GrayscaleMode"/>.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="mode">The formula to apply to perform the operation.</param>
-        /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Grayscale<TPixel>(this IImageProcessingContext<TPixel> source, GrayscaleMode mode)
-            where TPixel : struct, IPixel<TPixel>
+        /// <returns>The <see cref="IImageProcessingContext"/>.</returns>
+        public static IImageProcessingContext Grayscale(this IImageProcessingContext source, GrayscaleMode mode)
             => Grayscale(source, mode, 1F);
 
         /// <summary>
         /// Applies grayscale toning to the image with the given <see cref="GrayscaleMode"/> using the given amount.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="mode">The formula to apply to perform the operation.</param>
         /// <param name="amount">The proportion of the conversion. Must be between 0 and 1.</param>
-        /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Grayscale<TPixel>(this IImageProcessingContext<TPixel> source, GrayscaleMode mode, float amount)
-            where TPixel : struct, IPixel<TPixel>
+        /// <returns>The <see cref="IImageProcessingContext"/>.</returns>
+        public static IImageProcessingContext Grayscale(this IImageProcessingContext source, GrayscaleMode mode, float amount)
         {
-            IImageProcessor<TPixel> processor = mode == GrayscaleMode.Bt709
-               ? (IImageProcessor<TPixel>)new GrayscaleBt709Processor<TPixel>(amount)
-               : new GrayscaleBt601Processor<TPixel>(1F);
+            IImageProcessor processor = mode == GrayscaleMode.Bt709
+               ? (IImageProcessor)new GrayscaleBt709Processor(amount)
+               : new GrayscaleBt601Processor(1F);
 
             source.ApplyProcessor(processor);
             return source;
@@ -67,61 +59,53 @@ namespace SixLabors.ImageSharp.Processing
         /// <summary>
         /// Applies <see cref="GrayscaleMode.Bt709"/> grayscale toning to the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
-        /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Grayscale<TPixel>(this IImageProcessingContext<TPixel> source, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
+        /// <returns>The <see cref="IImageProcessingContext"/>.</returns>
+        public static IImageProcessingContext Grayscale(this IImageProcessingContext source, Rectangle rectangle)
             => Grayscale(source, 1F, rectangle);
 
         /// <summary>
         /// Applies <see cref="GrayscaleMode.Bt709"/> grayscale toning to the image using the given amount.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="amount">The proportion of the conversion. Must be between 0 and 1.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
-        /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Grayscale<TPixel>(this IImageProcessingContext<TPixel> source, float amount, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
+        /// <returns>The <see cref="IImageProcessingContext"/>.</returns>
+        public static IImageProcessingContext Grayscale(this IImageProcessingContext source, float amount, Rectangle rectangle)
             => Grayscale(source, GrayscaleMode.Bt709, amount, rectangle);
 
         /// <summary>
         /// Applies grayscale toning to the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="mode">The formula to apply to perform the operation.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
-        /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Grayscale<TPixel>(this IImageProcessingContext<TPixel> source, GrayscaleMode mode, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
+        /// <returns>The <see cref="IImageProcessingContext"/>.</returns>
+        public static IImageProcessingContext Grayscale(this IImageProcessingContext source, GrayscaleMode mode, Rectangle rectangle)
             => Grayscale(source, mode, 1F, rectangle);
 
         /// <summary>
         /// Applies grayscale toning to the image using the given amount.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="mode">The formula to apply to perform the operation.</param>
         /// <param name="amount">The proportion of the conversion. Must be between 0 and 1.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
-        /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Grayscale<TPixel>(this IImageProcessingContext<TPixel> source, GrayscaleMode mode, float amount, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
+        /// <returns>The <see cref="IImageProcessingContext"/>.</returns>
+        public static IImageProcessingContext Grayscale(this IImageProcessingContext source, GrayscaleMode mode, float amount, Rectangle rectangle)
         {
-            IImageProcessor<TPixel> processor = mode == GrayscaleMode.Bt709
-                ? (IImageProcessor<TPixel>)new GrayscaleBt709Processor<TPixel>(amount)
-                : new GrayscaleBt601Processor<TPixel>(amount);
+            IImageProcessor processor = mode == GrayscaleMode.Bt709
+                ? (IImageProcessor)new GrayscaleBt709Processor(amount)
+                : new GrayscaleBt601Processor(amount);
 
             source.ApplyProcessor(processor, rectangle);
             return source;

src/ImageSharp/Processing/HueExtensions.cs

@@ -8,33 +8,29 @@ using SixLabors.Primitives;
 namespace SixLabors.ImageSharp.Processing
 {
     /// <summary>
-    /// Adds extensions that allow the alteration of the hue component to the <see cref="Image{TPixel}"/> type.
+    /// Adds extensions that allow the alteration of the hue component to the <see cref="Image"/> type.
     /// </summary>
     public static class HueExtensions
     {
         /// <summary>
         /// Alters the hue component of the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="degrees">The rotation angle in degrees to adjust the hue.</param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Hue<TPixel>(this IImageProcessingContext<TPixel> source, float degrees)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new HueProcessor<TPixel>(degrees));
+        public static IImageProcessingContext Hue(this IImageProcessingContext source, float degrees)
+            => source.ApplyProcessor(new HueProcessor(degrees));
 
         /// <summary>
         /// Alters the hue component of the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="degrees">The rotation angle in degrees to adjust the hue.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Hue<TPixel>(this IImageProcessingContext<TPixel> source, float degrees, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new HueProcessor<TPixel>(degrees), rectangle);
+        public static IImageProcessingContext Hue(this IImageProcessingContext source, float degrees, Rectangle rectangle)
+            => source.ApplyProcessor(new HueProcessor(degrees), rectangle);
     }
 }

src/ImageSharp/Processing/InvertExtensions.cs

@@ -8,31 +8,27 @@ using SixLabors.Primitives;
 namespace SixLabors.ImageSharp.Processing
 {
     /// <summary>
-    /// Adds extensions that allow the inversion of colors to the <see cref="Image{TPixel}"/> type.
+    /// Adds extensions that allow the inversion of colors to the <see cref="Image"/> type.
     /// </summary>
     public static class InvertExtensions
     {
         /// <summary>
         /// Inverts the colors of the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Invert<TPixel>(this IImageProcessingContext<TPixel> source)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new InvertProcessor<TPixel>(1F));
+        public static IImageProcessingContext Invert(this IImageProcessingContext source)
+            => source.ApplyProcessor(new InvertProcessor(1F));
 
         /// <summary>
         /// Inverts the colors of the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Invert<TPixel>(this IImageProcessingContext<TPixel> source, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new InvertProcessor<TPixel>(1F), rectangle);
+        public static IImageProcessingContext Invert(this IImageProcessingContext source, Rectangle rectangle)
+            => source.ApplyProcessor(new InvertProcessor(1F), rectangle);
     }
 }

src/ImageSharp/Processing/KodachromeExtensions.cs

@@ -8,31 +8,27 @@ using SixLabors.Primitives;
 namespace SixLabors.ImageSharp.Processing
 {
     /// <summary>
-    /// Adds extensions that allow the recreation of an old Kodachrome camera effect to the <see cref="Image{TPixel}"/> type.
+    /// Adds extensions that allow the recreation of an old Kodachrome camera effect to the <see cref="Image"/> type.
     /// </summary>
     public static class KodachromeExtensions
     {
         /// <summary>
         /// Alters the colors of the image recreating an old Kodachrome camera effect.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Kodachrome<TPixel>(this IImageProcessingContext<TPixel> source)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new KodachromeProcessor<TPixel>());
+        public static IImageProcessingContext Kodachrome(this IImageProcessingContext source)
+            => source.ApplyProcessor(new KodachromeProcessor());
 
         /// <summary>
         /// Alters the colors of the image recreating an old Kodachrome camera effect.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Kodachrome<TPixel>(this IImageProcessingContext<TPixel> source, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new KodachromeProcessor<TPixel>(), rectangle);
+        public static IImageProcessingContext Kodachrome(this IImageProcessingContext source, Rectangle rectangle)
+            => source.ApplyProcessor(new KodachromeProcessor(), rectangle);
     }
 }

src/ImageSharp/Processing/LomographExtensions.cs

@@ -8,31 +8,27 @@ using SixLabors.Primitives;
 namespace SixLabors.ImageSharp.Processing
 {
     /// <summary>
-    /// Adds extensions that allow the recreation of an old Lomograph camera effect to the <see cref="Image{TPixel}"/> type.
+    /// Adds extensions that allow the recreation of an old Lomograph camera effect to the <see cref="Image"/> type.
     /// </summary>
     public static class LomographExtensions
     {
         /// <summary>
         /// Alters the colors of the image recreating an old Lomograph camera effect.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Lomograph<TPixel>(this IImageProcessingContext<TPixel> source)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new LomographProcessor<TPixel>());
+        public static IImageProcessingContext Lomograph(this IImageProcessingContext source)
+            => source.ApplyProcessor(new LomographProcessor());
 
         /// <summary>
         /// Alters the colors of the image recreating an old Lomograph camera effect.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Lomograph<TPixel>(this IImageProcessingContext<TPixel> source, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new LomographProcessor<TPixel>(), rectangle);
+        public static IImageProcessingContext Lomograph(this IImageProcessingContext source, Rectangle rectangle)
+            => source.ApplyProcessor(new LomographProcessor(), rectangle);
     }
 }

src/ImageSharp/Processing/PolaroidExtensions.cs

@@ -8,19 +8,17 @@ using SixLabors.Primitives;
 namespace SixLabors.ImageSharp.Processing
 {
     /// <summary>
-    /// Adds extensions that allow the recreation of an old Polaroid camera effect to the <see cref="Image{TPixel}"/> type.
+    /// Adds extensions that allow the recreation of an old Polaroid camera effect to the <see cref="Image"/> type.
     /// </summary>
     public static class PolaroidExtensions
     {
         /// <summary>
         /// Alters the colors of the image recreating an old Polaroid camera effect.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Polaroid<TPixel>(this IImageProcessingContext<TPixel> source)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new PolaroidProcessor<TPixel>());
+        public static IImageProcessingContext Polaroid(this IImageProcessingContext source)
+            => source.ApplyProcessor(new PolaroidProcessor());
 
         /// <summary>
         /// Alters the colors of the image recreating an old Polaroid camera effect.
@@ -31,8 +29,7 @@ namespace SixLabors.ImageSharp.Processing
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Polaroid<TPixel>(this IImageProcessingContext<TPixel> source, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new PolaroidProcessor<TPixel>(), rectangle);
+        public static IImageProcessingContext Polaroid(this IImageProcessingContext source, Rectangle rectangle)
+            => source.ApplyProcessor(new PolaroidProcessor(), rectangle);
     }
 }

src/ImageSharp/Processing/Processors/Convolution/EdgeDetector2DProcessor.cs

@@ -51,7 +51,7 @@ namespace SixLabors.ImageSharp.Processing.Processors.Convolution
         {
             if (this.Grayscale)
             {
-                new GrayscaleBt709Processor<TPixel>(1F).Apply(source, sourceRectangle, configuration);
+                new GrayscaleBt709Processor(1F).ApplyToFrame(source, sourceRectangle, configuration);
             }
         }
     }

src/ImageSharp/Processing/Processors/Convolution/EdgeDetectorCompassProcessor.cs

@@ -76,7 +76,7 @@ namespace SixLabors.ImageSharp.Processing.Processors.Convolution
         {
             if (this.Grayscale)
             {
-                new GrayscaleBt709Processor<TPixel>(1F).Apply(source, sourceRectangle, configuration);
+                new GrayscaleBt709Processor(1F).ApplyToFrame(source, sourceRectangle, configuration);
             }
         }
 

src/ImageSharp/Processing/Processors/Convolution/EdgeDetectorProcessor.cs

@@ -39,7 +39,7 @@ namespace SixLabors.ImageSharp.Processing.Processors.Convolution
         {
             if (this.Grayscale)
             {
-                new GrayscaleBt709Processor<TPixel>(1F).Apply(source, sourceRectangle, configuration);
+                new GrayscaleBt709Processor(1F).ApplyToFrame(source, sourceRectangle, configuration);
             }
         }
 

src/ImageSharp/Processing/Processors/Filters/AchromatomalyProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Converts the colors of the image recreating Achromatomaly (Color desensitivity) color blindness.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class AchromatomalyProcessor<TPixel> : FilterProcessor<TPixel>
-        where TPixel : struct, IPixel<TPixel>
+    internal class AchromatomalyProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="AchromatomalyProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="AchromatomalyProcessor"/> class.
         /// </summary>
         public AchromatomalyProcessor()
             : base(KnownFilterMatrices.AchromatomalyFilter)

src/ImageSharp/Processing/Processors/Filters/AchromatopsiaProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Converts the colors of the image recreating Achromatopsia (Monochrome) color blindness.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class AchromatopsiaProcessor<TPixel> : FilterProcessor<TPixel>
-        where TPixel : struct, IPixel<TPixel>
+    internal class AchromatopsiaProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="AchromatopsiaProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="AchromatopsiaProcessor"/> class.
         /// </summary>
         public AchromatopsiaProcessor()
             : base(KnownFilterMatrices.AchromatopsiaFilter)

src/ImageSharp/Processing/Processors/Filters/BrightnessProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Applies a brightness filter matrix using the given amount.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class BrightnessProcessor<TPixel> : FilterProcessor<TPixel>
-         where TPixel : struct, IPixel<TPixel>
+    internal class BrightnessProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="BrightnessProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="BrightnessProcessor"/> class.
         /// </summary>
         /// <remarks>
         /// A value of <value>0</value> will create an image that is completely black. A value of <value>1</value> leaves the input unchanged.

src/ImageSharp/Processing/Processors/Filters/ContrastProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Applies a contrast filter matrix using the given amount.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class ContrastProcessor<TPixel> : FilterProcessor<TPixel>
-         where TPixel : struct, IPixel<TPixel>
+    internal class ContrastProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="ContrastProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="ContrastProcessor"/> class.
         /// </summary>
         /// <remarks>
         /// A value of <value>0</value> will create an image that is completely gray. A value of <value>1</value> leaves the input unchanged.

src/ImageSharp/Processing/Processors/Filters/DeuteranomalyProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Converts the colors of the image recreating Deuteranomaly (Green-Weak) color blindness.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class DeuteranomalyProcessor<TPixel> : FilterProcessor<TPixel>
-        where TPixel : struct, IPixel<TPixel>
+    internal class DeuteranomalyProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="DeuteranomalyProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="DeuteranomalyProcessor"/> class.
         /// </summary>
         public DeuteranomalyProcessor()
             : base(KnownFilterMatrices.DeuteranomalyFilter)

src/ImageSharp/Processing/Processors/Filters/DeuteranopiaProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Converts the colors of the image recreating Deuteranopia (Green-Blind) color blindness.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class DeuteranopiaProcessor<TPixel> : FilterProcessor<TPixel>
-        where TPixel : struct, IPixel<TPixel>
+    internal class DeuteranopiaProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="DeuteranopiaProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="DeuteranopiaProcessor"/> class.
         /// </summary>
         public DeuteranopiaProcessor()
             : base(KnownFilterMatrices.DeuteranopiaFilter)

src/ImageSharp/Processing/Processors/Filters/FilterProcessor.cs

@@ -19,7 +19,7 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
         /// </summary>
         public ColorMatrix Matrix { get; }
 
-        public IImageProcessor<TPixel> CreatePixelSpecificProcessor<TPixel>()
+        public virtual IImageProcessor<TPixel> CreatePixelSpecificProcessor<TPixel>()
             where TPixel : struct, IPixel<TPixel>
         {
             return new FilterProcessorImplementation<TPixel>(this);

src/ImageSharp/Processing/Processors/Filters/FilterProcessorImplementation.cs

@@ -18,11 +18,11 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     internal class FilterProcessorImplementation<TPixel> : ImageProcessor<TPixel>
         where TPixel : struct, IPixel<TPixel>
     {
-        private readonly FilterProcessor paramterSource;
+        private readonly FilterProcessor definition;
 
-        public FilterProcessorImplementation(FilterProcessor paramterSource)
+        public FilterProcessorImplementation(FilterProcessor definition)
         {
-            this.paramterSource = paramterSource;
+            this.definition = definition;
         }
 
         /// <inheritdoc/>
@@ -31,7 +31,7 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
             var interest = Rectangle.Intersect(sourceRectangle, source.Bounds());
             int startX = interest.X;
 
-            ColorMatrix matrix = this.paramterSource.Matrix;
+            ColorMatrix matrix = this.definition.Matrix;
 
             ParallelHelper.IterateRowsWithTempBuffer<Vector4>(
                 interest,

src/ImageSharp/Processing/Processors/Filters/GrayscaleBt601Processor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Applies a grayscale filter matrix using the given amount and the formula as specified by ITU-R Recommendation BT.601
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class GrayscaleBt601Processor<TPixel> : FilterProcessor<TPixel>
-         where TPixel : struct, IPixel<TPixel>
+    internal class GrayscaleBt601Processor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="GrayscaleBt601Processor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="GrayscaleBt601Processor"/> class.
         /// </summary>
         /// <param name="amount">The proportion of the conversion. Must be between 0 and 1.</param>
         public GrayscaleBt601Processor(float amount)

src/ImageSharp/Processing/Processors/Filters/GrayscaleBt709Processor.cs

@@ -2,18 +2,17 @@
 // Licensed under the Apache License, Version 2.0.
 
 using SixLabors.ImageSharp.PixelFormats;
+using SixLabors.Primitives;
 
 namespace SixLabors.ImageSharp.Processing.Processors.Filters
 {
     /// <summary>
     /// Applies a grayscale filter matrix using the given amount and the formula as specified by ITU-R Recommendation BT.709
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class GrayscaleBt709Processor<TPixel> : FilterProcessor<TPixel>
-         where TPixel : struct, IPixel<TPixel>
+    internal class GrayscaleBt709Processor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="GrayscaleBt709Processor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="GrayscaleBt709Processor"/> class.
         /// </summary>
         /// <param name="amount">The proportion of the conversion. Must be between 0 and 1.</param>
         public GrayscaleBt709Processor(float amount)
@@ -23,8 +22,16 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
         }
 
         /// <summary>
-        /// Gets the proportion of the conversion
+        /// Gets the proportion of the conversion.
         /// </summary>
         public float Amount { get; }
+
+        // TODO: Move this to an appropriate extension method if possible.
+        internal void ApplyToFrame<TPixel>(ImageFrame<TPixel> frame, Rectangle sourceRectangle, Configuration configuration)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            var processorImpl = new FilterProcessorImplementation<TPixel>(new GrayscaleBt709Processor(1F));
+            processorImpl.Apply(frame, sourceRectangle, configuration);
+        }
     }
 }

src/ImageSharp/Processing/Processors/Filters/HueProcessor.cs

@@ -8,11 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Applies a hue filter matrix using the given angle of rotation in degrees
     /// </summary>
-    internal class HueProcessor<TPixel> : FilterProcessor<TPixel>
-         where TPixel : struct, IPixel<TPixel>
+    internal class HueProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="HueProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="HueProcessor"/> class.
         /// </summary>
         /// <param name="degrees">The angle of rotation in degrees</param>
         public HueProcessor(float degrees)

src/ImageSharp/Processing/Processors/Filters/InvertProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Applies a filter matrix that inverts the colors of an image
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class InvertProcessor<TPixel> : FilterProcessor<TPixel>
-         where TPixel : struct, IPixel<TPixel>
+    internal class InvertProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="InvertProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="InvertProcessor"/> class.
         /// </summary>
         /// <param name="amount">The proportion of the conversion. Must be between 0 and 1.</param>
         public InvertProcessor(float amount)

src/ImageSharp/Processing/Processors/Filters/KodachromeProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Applies a filter matrix recreating an old Kodachrome camera effect matrix to the image
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class KodachromeProcessor<TPixel> : FilterProcessor<TPixel>
-          where TPixel : struct, IPixel<TPixel>
+    internal class KodachromeProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="KodachromeProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="KodachromeProcessor"/> class.
         /// </summary>
         public KodachromeProcessor()
             : base(KnownFilterMatrices.KodachromeFilter)

src/ImageSharp/Processing/Processors/Filters/LomographProcessor.cs

@@ -1,33 +1,22 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.PixelFormats;
-using SixLabors.ImageSharp.Processing.Processors.Overlays;
-using SixLabors.Primitives;
-
 namespace SixLabors.ImageSharp.Processing.Processors.Filters
 {
     /// <summary>
     /// Converts the colors of the image recreating an old Lomograph effect.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class LomographProcessor<TPixel> : FilterProcessor<TPixel>
-        where TPixel : struct, IPixel<TPixel>
+    internal class LomographProcessor : FilterProcessor
     {
-        private static readonly TPixel VeryDarkGreen = ColorBuilder<TPixel>.FromRGBA(0, 10, 0, 255);
-
         /// <summary>
-        /// Initializes a new instance of the <see cref="LomographProcessor{TPixel}" /> class.
+        /// Initializes a new instance of the <see cref="LomographProcessor" /> class.
         /// </summary>
         public LomographProcessor()
             : base(KnownFilterMatrices.LomographFilter)
         {
         }
 
-        /// <inheritdoc/>
-        protected override void AfterFrameApply(ImageFrame<TPixel> source, Rectangle sourceRectangle, Configuration configuration)
-        {
-            new VignetteProcessor<TPixel>(VeryDarkGreen).Apply(source, sourceRectangle, configuration);
-        }
+        public override IImageProcessor<TPixel> CreatePixelSpecificProcessor<TPixel>() =>
+            new LomographProcessorImplementation<TPixel>(this);
     }
 }

src/ImageSharp/Processing/Processors/Filters/LomographProcessorImplementation.cs

@@ -0,0 +1,26 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using SixLabors.ImageSharp.PixelFormats;
+using SixLabors.ImageSharp.Processing.Processors.Overlays;
+using SixLabors.Primitives;
+
+namespace SixLabors.ImageSharp.Processing.Processors.Filters
+{
+    internal class LomographProcessorImplementation<TPixel> : FilterProcessorImplementation<TPixel>
+        where TPixel : struct, IPixel<TPixel>
+    {
+        private static readonly TPixel VeryDarkGreen = ColorBuilder<TPixel>.FromRGBA(0, 10, 0, 255);
+
+        /// <inheritdoc/>
+        protected override void AfterFrameApply(ImageFrame<TPixel> source, Rectangle sourceRectangle, Configuration configuration)
+        {
+            new VignetteProcessor<TPixel>(VeryDarkGreen).Apply(source, sourceRectangle, configuration);
+        }
+
+        public LomographProcessorImplementation(FilterProcessor definition)
+            : base(definition)
+        {
+        }
+    }
+}

src/ImageSharp/Processing/Processors/Filters/PolaroidProcessor.cs

@@ -10,13 +10,8 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Converts the colors of the image recreating an old Polaroid effect.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class PolaroidProcessor<TPixel> : FilterProcessor<TPixel>
-        where TPixel : struct, IPixel<TPixel>
+    public class PolaroidProcessor : FilterProcessor
     {
-        private static readonly TPixel VeryDarkOrange = ColorBuilder<TPixel>.FromRGB(102, 34, 0);
-        private static readonly TPixel LightOrange = ColorBuilder<TPixel>.FromRGBA(255, 153, 102, 128);
-
         /// <summary>
         /// Initializes a new instance of the <see cref="PolaroidProcessor{TPixel}" /> class.
         /// </summary>
@@ -25,11 +20,26 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
         {
         }
 
+        public override IImageProcessor<TPixel> CreatePixelSpecificProcessor<TPixel>() =>
+            new PolaroidProcessorImplementation<TPixel>(this);
+    }
+
+    internal class PolaroidProcessorImplementation<TPixel> : FilterProcessorImplementation<TPixel>
+        where TPixel : struct, IPixel<TPixel>
+    {
+        private static readonly TPixel VeryDarkOrange = ColorBuilder<TPixel>.FromRGB(102, 34, 0);
+        private static readonly TPixel LightOrange = ColorBuilder<TPixel>.FromRGBA(255, 153, 102, 128);
+
         /// <inheritdoc/>
         protected override void AfterFrameApply(ImageFrame<TPixel> source, Rectangle sourceRectangle, Configuration configuration)
         {
             new VignetteProcessor<TPixel>(VeryDarkOrange).Apply(source, sourceRectangle, configuration);
             new GlowProcessor<TPixel>(LightOrange, source.Width / 4F).Apply(source, sourceRectangle, configuration);
         }
+
+        public PolaroidProcessorImplementation(FilterProcessor definition)
+            : base(definition)
+        {
+        }
     }
 }

src/ImageSharp/Processing/Processors/Filters/ProtanomalyProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Converts the colors of the image recreating Protanomaly (Red-Weak) color blindness.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class ProtanomalyProcessor<TPixel> : FilterProcessor<TPixel>
-        where TPixel : struct, IPixel<TPixel>
+    internal class ProtanomalyProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="ProtanomalyProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="ProtanomalyProcessor"/> class.
         /// </summary>
         public ProtanomalyProcessor()
             : base(KnownFilterMatrices.ProtanomalyFilter)

src/ImageSharp/Processing/Processors/Filters/ProtanopiaProcessor.cs

@@ -9,11 +9,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// Converts the colors of the image recreating Protanopia (Red-Blind) color blindness.
     /// </summary>
     /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class ProtanopiaProcessor<TPixel> : FilterProcessor<TPixel>
-        where TPixel : struct, IPixel<TPixel>
+    internal class ProtanopiaProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="ProtanopiaProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="ProtanopiaProcessor"/> class.
         /// </summary>
         public ProtanopiaProcessor()
             : base(KnownFilterMatrices.ProtanopiaFilter)

src/ImageSharp/Processing/Processors/Filters/SaturateProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Applies a saturation filter matrix using the given amount.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class SaturateProcessor<TPixel> : FilterProcessor<TPixel>
-         where TPixel : struct, IPixel<TPixel>
+    internal class SaturateProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="SaturateProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="SaturateProcessor"/> class.
         /// </summary>
         /// <remarks>
         /// A value of <value>0</value> is completely un-saturated. A value of <value>1</value> leaves the input unchanged.

src/ImageSharp/Processing/Processors/Filters/SepiaProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Applies a sepia filter matrix using the given amount.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class SepiaProcessor<TPixel> : FilterProcessor<TPixel>
-         where TPixel : struct, IPixel<TPixel>
+    internal class SepiaProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="SepiaProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="SepiaProcessor"/> class.
         /// </summary>
         /// <param name="amount">The proportion of the conversion. Must be between 0 and 1.</param>
         public SepiaProcessor(float amount)

src/ImageSharp/Processing/Processors/Filters/TritanomalyProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Converts the colors of the image recreating Tritanomaly (Blue-Weak) color blindness.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class TritanomalyProcessor<TPixel> : FilterProcessor<TPixel>
-        where TPixel : struct, IPixel<TPixel>
+    internal class TritanomalyProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="TritanomalyProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="TritanomalyProcessor"/> class.
         /// </summary>
         public TritanomalyProcessor()
             : base(KnownFilterMatrices.TritanomalyFilter)

src/ImageSharp/Processing/Processors/Filters/TritanopiaProcessor.cs

@@ -8,12 +8,10 @@ namespace SixLabors.ImageSharp.Processing.Processors.Filters
     /// <summary>
     /// Converts the colors of the image recreating Tritanopia (Blue-Blind) color blindness.
     /// </summary>
-    /// <typeparam name="TPixel">The pixel format.</typeparam>
-    internal class TritanopiaProcessor<TPixel> : FilterProcessor<TPixel>
-        where TPixel : struct, IPixel<TPixel>
+    internal class TritanopiaProcessor : FilterProcessor
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="TritanopiaProcessor{TPixel}"/> class.
+        /// Initializes a new instance of the <see cref="TritanopiaProcessor"/> class.
         /// </summary>
         public TritanopiaProcessor()
             : base(KnownFilterMatrices.TritanopiaFilter)

src/ImageSharp/Processing/Processors/IImageProcessor.cs

@@ -11,7 +11,7 @@ namespace SixLabors.ImageSharp.Processing.Processors
         IImageProcessor<TPixel> CreatePixelSpecificProcessor<TPixel>()
             where TPixel : struct, IPixel<TPixel>;
     }
-    
+
     /// <summary>
     /// Encapsulates methods to alter the pixels of an image.
     /// </summary>
@@ -34,4 +34,33 @@ namespace SixLabors.ImageSharp.Processing.Processors
         /// </exception>
         void Apply(Image<TPixel> source, Rectangle sourceRectangle);
     }
+
+    internal static class ImageProcessorExtensions
+    {
+        public static void Apply(this IImageProcessor processor, Image source, Rectangle sourceRectangle)
+        {
+            var visitor = new ApplyVisitor(processor, sourceRectangle);
+            source.AcceptVisitor(visitor);
+        }
+
+        private class ApplyVisitor : IImageVisitor
+        {
+            private readonly IImageProcessor processor;
+
+            private readonly Rectangle sourceRectangle;
+
+            public ApplyVisitor(IImageProcessor processor, Rectangle sourceRectangle)
+            {
+                this.processor = processor;
+                this.sourceRectangle = sourceRectangle;
+            }
+
+            public void Visit<TPixel>(Image<TPixel> image)
+                where TPixel : struct, IPixel<TPixel>
+            {
+                var processorImpl = processor.CreatePixelSpecificProcessor<TPixel>();
+                processorImpl.Apply(image, this.sourceRectangle);
+            }
+        }
+    }
 }

src/ImageSharp/Processing/SaturateExtensions.cs

@@ -8,7 +8,7 @@ using SixLabors.Primitives;
 namespace SixLabors.ImageSharp.Processing
 {
     /// <summary>
-    /// Adds extensions that allow the alteration of the saturation component to the <see cref="Image{TPixel}"/> type.
+    /// Adds extensions that allow the alteration of the saturation component to the <see cref="Image"/> type.
     /// </summary>
     public static class SaturateExtensions
     {
@@ -19,13 +19,11 @@ namespace SixLabors.ImageSharp.Processing
         /// A value of 0 is completely un-saturated. A value of 1 leaves the input unchanged.
         /// Other values are linear multipliers on the effect. Values of amount over 1 are allowed, providing super-saturated results
         /// </remarks>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="amount">The proportion of the conversion. Must be greater than or equal to 0.</param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Saturate<TPixel>(this IImageProcessingContext<TPixel> source, float amount)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new SaturateProcessor<TPixel>(amount));
+        public static IImageProcessingContext Saturate(this IImageProcessingContext source, float amount)
+            => source.ApplyProcessor(new SaturateProcessor(amount));
 
         /// <summary>
         /// Alters the saturation component of the image.
@@ -34,15 +32,13 @@ namespace SixLabors.ImageSharp.Processing
         /// A value of 0 is completely un-saturated. A value of 1 leaves the input unchanged.
         /// Other values are linear multipliers on the effect. Values of amount over 1 are allowed, providing super-saturated results
         /// </remarks>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="amount">The proportion of the conversion. Must be greater than or equal to 0.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Saturate<TPixel>(this IImageProcessingContext<TPixel> source, float amount, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new SaturateProcessor<TPixel>(amount), rectangle);
+        public static IImageProcessingContext Saturate(this IImageProcessingContext source, float amount, Rectangle rectangle)
+            => source.ApplyProcessor(new SaturateProcessor(amount), rectangle);
     }
 }

src/ImageSharp/Processing/SepiaExtensions.cs

@@ -8,56 +8,48 @@ using SixLabors.Primitives;
 namespace SixLabors.ImageSharp.Processing
 {
     /// <summary>
-    /// Adds extensions that allow the application of sepia toning to the <see cref="Image{TPixel}"/> type.
+    /// Adds extensions that allow the application of sepia toning to the <see cref="Image"/> type.
     /// </summary>
     public static class SepiaExtensions
     {
         /// <summary>
         /// Applies sepia toning to the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Sepia<TPixel>(this IImageProcessingContext<TPixel> source)
-            where TPixel : struct, IPixel<TPixel>
+        public static IImageProcessingContext Sepia(this IImageProcessingContext source)
              => Sepia(source, 1F);
 
         /// <summary>
         /// Applies sepia toning to the image using the given amount.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="amount">The proportion of the conversion. Must be between 0 and 1.</param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Sepia<TPixel>(this IImageProcessingContext<TPixel> source, float amount)
-            where TPixel : struct, IPixel<TPixel>
-             => source.ApplyProcessor(new SepiaProcessor<TPixel>(amount));
+        public static IImageProcessingContext Sepia(this IImageProcessingContext source, float amount)
+             => source.ApplyProcessor(new SepiaProcessor(amount));
 
         /// <summary>
         /// Applies sepia toning to the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Sepia<TPixel>(this IImageProcessingContext<TPixel> source, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
+        public static IImageProcessingContext Sepia(this IImageProcessingContext source, Rectangle rectangle)
             => Sepia(source, 1F, rectangle);
 
         /// <summary>
         /// Applies sepia toning to the image.
         /// </summary>
-        /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="source">The image this method extends.</param>
         /// <param name="amount">The proportion of the conversion. Must be between 0 and 1.</param>
         /// <param name="rectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
         /// </param>
         /// <returns>The <see cref="Image{TPixel}"/>.</returns>
-        public static IImageProcessingContext<TPixel> Sepia<TPixel>(this IImageProcessingContext<TPixel> source, float amount, Rectangle rectangle)
-            where TPixel : struct, IPixel<TPixel>
-            => source.ApplyProcessor(new SepiaProcessor<TPixel>(amount), rectangle);
+        public static IImageProcessingContext Sepia(this IImageProcessingContext source, float amount, Rectangle rectangle)
+            => source.ApplyProcessor(new SepiaProcessor(amount), rectangle);
     }
 }