diff --git a/src/ImageProcessorCore/Filters/Binarization/Threshold.cs b/src/ImageProcessorCore/Filters/Binarization/Threshold.cs
index e348817a3..250cdc140 100644
--- a/src/ImageProcessorCore/Filters/Binarization/Threshold.cs
+++ b/src/ImageProcessorCore/Filters/Binarization/Threshold.cs
@@ -45,7 +45,7 @@ namespace ImageProcessorCore.Filters
         public Color LowerColor => Color.Black;
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             new GreyscaleBt709().Apply(source, source, sourceRectangle);
         }
diff --git a/src/ImageProcessorCore/Filters/ColorMatrix/Hue.cs b/src/ImageProcessorCore/Filters/ColorMatrix/Hue.cs
index 4d1945ecf..8d79a204a 100644
--- a/src/ImageProcessorCore/Filters/ColorMatrix/Hue.cs
+++ b/src/ImageProcessorCore/Filters/ColorMatrix/Hue.cs
@@ -40,7 +40,7 @@
         public override bool Compand => false;
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             float radians = (float)ImageMaths.DegreesToRadians(this.Angle);
             double cosradians = Math.Cos(radians);
diff --git a/src/ImageProcessorCore/Filters/ColorMatrix/Saturation.cs b/src/ImageProcessorCore/Filters/ColorMatrix/Saturation.cs
index f5e6f1b3c..113afcb0c 100644
--- a/src/ImageProcessorCore/Filters/ColorMatrix/Saturation.cs
+++ b/src/ImageProcessorCore/Filters/ColorMatrix/Saturation.cs
@@ -40,7 +40,7 @@ namespace ImageProcessorCore.Filters
         public override Matrix4x4 Matrix => this.matrix;
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             float saturationFactor = this.saturation / 100f;
 
diff --git a/src/ImageProcessorCore/Filters/Convolution/BoxBlur.cs b/src/ImageProcessorCore/Filters/Convolution/BoxBlur.cs
index f104140bd..5da2d2be6 100644
--- a/src/ImageProcessorCore/Filters/Convolution/BoxBlur.cs
+++ b/src/ImageProcessorCore/Filters/Convolution/BoxBlur.cs
@@ -46,7 +46,7 @@ namespace ImageProcessorCore.Filters
         public override int Parallelism => 1;
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             if (this.kernelY == null)
             {
diff --git a/src/ImageProcessorCore/Filters/Convolution/EdgeDetection/EdgeDetector2DFilter.cs b/src/ImageProcessorCore/Filters/Convolution/EdgeDetection/EdgeDetector2DFilter.cs
index 2b6391c76..c37e6f23c 100644
--- a/src/ImageProcessorCore/Filters/Convolution/EdgeDetection/EdgeDetector2DFilter.cs
+++ b/src/ImageProcessorCore/Filters/Convolution/EdgeDetection/EdgeDetector2DFilter.cs
@@ -15,7 +15,7 @@ namespace ImageProcessorCore.Filters
         public bool Greyscale { get; set; }
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             if (this.Greyscale)
             {
diff --git a/src/ImageProcessorCore/Filters/Convolution/EdgeDetection/EdgeDetectorFilter.cs b/src/ImageProcessorCore/Filters/Convolution/EdgeDetection/EdgeDetectorFilter.cs
index 614ed5ab8..3795bb78c 100644
--- a/src/ImageProcessorCore/Filters/Convolution/EdgeDetection/EdgeDetectorFilter.cs
+++ b/src/ImageProcessorCore/Filters/Convolution/EdgeDetection/EdgeDetectorFilter.cs
@@ -15,7 +15,7 @@ namespace ImageProcessorCore.Filters
         public bool Greyscale { get; set; }
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             if (this.Greyscale)
             {
diff --git a/src/ImageProcessorCore/Filters/Convolution/GuassianBlur.cs b/src/ImageProcessorCore/Filters/Convolution/GuassianBlur.cs
index aa0ef4f3c..ed4cb6d4f 100644
--- a/src/ImageProcessorCore/Filters/Convolution/GuassianBlur.cs
+++ b/src/ImageProcessorCore/Filters/Convolution/GuassianBlur.cs
@@ -80,7 +80,7 @@ namespace ImageProcessorCore.Filters
         public override int Parallelism => 1;
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             if (this.kernelY == null)
             {
diff --git a/src/ImageProcessorCore/Filters/Convolution/GuassianSharpen.cs b/src/ImageProcessorCore/Filters/Convolution/GuassianSharpen.cs
index 44b0f9d40..7e64383cf 100644
--- a/src/ImageProcessorCore/Filters/Convolution/GuassianSharpen.cs
+++ b/src/ImageProcessorCore/Filters/Convolution/GuassianSharpen.cs
@@ -82,7 +82,7 @@ namespace ImageProcessorCore.Filters
         public override int Parallelism => 1;
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             if (this.kernelY == null)
             {
diff --git a/src/ImageProcessorCore/ParallelImageProcessor.cs b/src/ImageProcessorCore/ParallelImageProcessor.cs
index 8ec38d125..fd47b2357 100644
--- a/src/ImageProcessorCore/ParallelImageProcessor.cs
+++ b/src/ImageProcessorCore/ParallelImageProcessor.cs
@@ -37,7 +37,7 @@ namespace ImageProcessorCore
         {
             try
             {
-                this.OnApply(source, target, target.Bounds, sourceRectangle);
+                this.OnApply(target, source, target.Bounds, sourceRectangle);
 
                 this.numRowsProcessed = 0;
                 this.totalRows = sourceRectangle.Height;
@@ -71,7 +71,7 @@ namespace ImageProcessorCore
                     this.Apply(target, source, target.Bounds, sourceRectangle, sourceRectangle.Y, sourceRectangle.Bottom);
                 }
 
-                this.AfterApply(source, target, target.Bounds, sourceRectangle);
+                this.AfterApply(target, source, target.Bounds, sourceRectangle);
             }
             catch (Exception ex)
             {
@@ -98,7 +98,7 @@ namespace ImageProcessorCore
                     targetRectangle = target.Bounds;
                 }
 
-                this.OnApply(source, target, targetRectangle, sourceRectangle);
+                this.OnApply(target, source, targetRectangle, sourceRectangle);
 
                 this.numRowsProcessed = 0;
                 this.totalRows = targetRectangle.Bottom;
@@ -129,7 +129,7 @@ namespace ImageProcessorCore
                     this.Apply(target, source, targetRectangle, sourceRectangle, targetRectangle.Y, targetRectangle.Bottom);
                 }
 
-                this.AfterApply(source, target, target.Bounds, sourceRectangle);
+                this.AfterApply(target, source, target.Bounds, sourceRectangle);
             }
             catch (Exception ex)
             {
@@ -140,8 +140,8 @@ namespace ImageProcessorCore
         /// <summary>
         /// This method is called before the process is applied to prepare the processor.
         /// </summary>
-        /// <param name="source">The source image. Cannot be null.</param>
         /// <param name="target">Target image to apply the process to.</param>
+        /// <param name="source">The source image. Cannot be null.</param>
         /// <param name="targetRectangle">
         /// The <see cref="Rectangle"/> structure that specifies the location and size of the drawn image.
         /// The image is scaled to fit the rectangle.
@@ -149,7 +149,7 @@ namespace ImageProcessorCore
         /// <param name="sourceRectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to draw.
         /// </param>
-        protected virtual void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected virtual void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
         }
 
@@ -177,8 +177,8 @@ namespace ImageProcessorCore
         /// <summary>
         /// This method is called after the process is applied to prepare the processor.
         /// </summary>
-        /// <param name="source">The source image. Cannot be null.</param>
         /// <param name="target">Target image to apply the process to.</param>
+        /// <param name="source">The source image. Cannot be null.</param>
         /// <param name="targetRectangle">
         /// The <see cref="Rectangle"/> structure that specifies the location and size of the drawn image.
         /// The image is scaled to fit the rectangle.
@@ -186,7 +186,7 @@ namespace ImageProcessorCore
         /// <param name="sourceRectangle">
         /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to draw.
         /// </param>
-        protected virtual void AfterApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected virtual void AfterApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
         }
 
diff --git a/src/ImageProcessorCore/Samplers/Options/ResizeOptions.cs b/src/ImageProcessorCore/Samplers/Options/ResizeOptions.cs
index 8a5716f6b..82db8ed86 100644
--- a/src/ImageProcessorCore/Samplers/Options/ResizeOptions.cs
+++ b/src/ImageProcessorCore/Samplers/Options/ResizeOptions.cs
@@ -5,7 +5,6 @@
 
 namespace ImageProcessorCore
 {
-    using Processors
     using System.Collections.Generic;
     using System.Linq;
 
diff --git a/src/ImageProcessorCore/Samplers/Processors/EntropyCrop.cs b/src/ImageProcessorCore/Samplers/Processors/EntropyCrop.cs
index 763433d9c..ef9bd5b23 100644
--- a/src/ImageProcessorCore/Samplers/Processors/EntropyCrop.cs
+++ b/src/ImageProcessorCore/Samplers/Processors/EntropyCrop.cs
@@ -40,7 +40,7 @@ namespace ImageProcessorCore.Processors
         public float Value { get; }
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             using (ImageBase temp = new Image(source.Width, source.Height))
             {
diff --git a/src/ImageProcessorCore/Samplers/Processors/Resize.cs b/src/ImageProcessorCore/Samplers/Processors/Resize.cs
index e8bd9bbab..3ca754ee6 100644
--- a/src/ImageProcessorCore/Samplers/Processors/Resize.cs
+++ b/src/ImageProcessorCore/Samplers/Processors/Resize.cs
@@ -32,7 +32,7 @@ namespace ImageProcessorCore.Processors
         public override int Parallelism { get; set; } = 1;
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             if (!(this.Sampler is NearestNeighborResampler))
             {
diff --git a/src/ImageProcessorCore/Samplers/Processors/Rotate.cs b/src/ImageProcessorCore/Samplers/Processors/Rotate.cs
index e98117a17..2d46dee06 100644
--- a/src/ImageProcessorCore/Samplers/Processors/Rotate.cs
+++ b/src/ImageProcessorCore/Samplers/Processors/Rotate.cs
@@ -63,7 +63,7 @@ namespace ImageProcessorCore.Processors
         public bool Expand { get; set; }
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             // If we are expanding we need to pad the bounds of the source rectangle.
             // We can use the resizer in nearest neighbor mode to do this fairly quickly.
diff --git a/src/ImageProcessorCore/Samplers/Processors/Skew.cs b/src/ImageProcessorCore/Samplers/Processors/Skew.cs
index fd457ece4..89f050630 100644
--- a/src/ImageProcessorCore/Samplers/Processors/Skew.cs
+++ b/src/ImageProcessorCore/Samplers/Processors/Skew.cs
@@ -94,7 +94,7 @@ namespace ImageProcessorCore.Processors
         public bool Expand { get; set; }
 
         /// <inheritdoc/>
-        protected override void OnApply(ImageBase source, ImageBase target, Rectangle targetRectangle, Rectangle sourceRectangle)
+        protected override void OnApply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle)
         {
             // If we are expanding we need to pad the bounds of the source rectangle.
             // We can use the resizer in nearest neighbor mode to do this fairly quickly.
diff --git a/tests/ImageProcessorCore.Benchmarks/Samplers/Crop.cs b/tests/ImageProcessorCore.Benchmarks/Samplers/Crop.cs
index 85bc4190a..3c0cab4ca 100644
--- a/tests/ImageProcessorCore.Benchmarks/Samplers/Crop.cs
+++ b/tests/ImageProcessorCore.Benchmarks/Samplers/Crop.cs
@@ -5,7 +5,7 @@
 
     using BenchmarkDotNet.Attributes;
 
-    using ImageProcessorCore.Samplers;
+    using ImageProcessorCore.Processors;
     using CoreImage = ImageProcessorCore.Image;
     using CoreSize = ImageProcessorCore.Size;
 
diff --git a/tests/ImageProcessorCore.Benchmarks/Samplers/Resize.cs b/tests/ImageProcessorCore.Benchmarks/Samplers/Resize.cs
index 15f1b91be..97415f2fa 100644
--- a/tests/ImageProcessorCore.Benchmarks/Samplers/Resize.cs
+++ b/tests/ImageProcessorCore.Benchmarks/Samplers/Resize.cs
@@ -5,7 +5,7 @@
 
     using BenchmarkDotNet.Attributes;
 
-    using ImageProcessorCore.Samplers;
+    using ImageProcessorCore.Processors;
     using CoreImage = ImageProcessorCore.Image;
     using CoreSize = ImageProcessorCore.Size;
 
diff --git a/tests/ImageProcessorCore.Tests/Processors/Samplers/SamplerTests.cs b/tests/ImageProcessorCore.Tests/Processors/Samplers/SamplerTests.cs
index 247c2bd52..33b006ebf 100644
--- a/tests/ImageProcessorCore.Tests/Processors/Samplers/SamplerTests.cs
+++ b/tests/ImageProcessorCore.Tests/Processors/Samplers/SamplerTests.cs
@@ -3,7 +3,7 @@
     using System.Diagnostics;
     using System.IO;
 
-    using ImageProcessorCore.Samplers;
+    using ImageProcessorCore.Processors;
 
     using Xunit;
     using Filters;