diff --git a/src/ImageProcessor/Filters/Contrast.cs b/src/ImageProcessor/Filters/Contrast.cs
index 291b1c6d2..6c3336fca 100644
--- a/src/ImageProcessor/Filters/Contrast.cs
+++ b/src/ImageProcessor/Filters/Contrast.cs
@@ -30,19 +30,14 @@ namespace ImageProcessor.Filters
         /// </summary>
         public int Value { get; }
 
-        protected override void Apply(ImageBase source, ImageBase target, Rectangle sourceRectangle, Rectangle targetRectangle, int startY, int endY)
-        {
-            throw new NotImplementedException();
-        }
-
         /// <inheritdoc/>
-        protected override void Apply(ImageBase target, ImageBase source, Rectangle rectangle, int startY, int endY)
+        protected override void Apply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle, int startY, int endY)
         {
             double contrast = (100.0 + this.Value) / 100.0;
 
             for (int y = startY; y < endY; y++)
             {
-                for (int x = rectangle.X; x < rectangle.Right; x++)
+                for (int x = sourceRectangle.X; x < sourceRectangle.Right; x++)
                 {
                     Bgra color = source[x, y];
 
diff --git a/src/ImageProcessor/IImageProcessor.cs b/src/ImageProcessor/IImageProcessor.cs
index a9eea7dbd..696348989 100644
--- a/src/ImageProcessor/IImageProcessor.cs
+++ b/src/ImageProcessor/IImageProcessor.cs
@@ -11,12 +11,12 @@ namespace ImageProcessor
     public interface IImageProcessor
     {
         /// <summary>
-        /// Apply a process to an image to alter the pixels at the area of the specified rectangle.
+        /// Applies the process to the specified portion of the specified <see cref="ImageBase"/>.
         /// </summary>
         /// <param name="target">Target image to apply the process to.</param>
         /// <param name="source">The source image. Cannot be null.</param>
-        /// <param name="rectangle">
-        /// The rectangle, which defines the area of the image where the process should be applied to.
+        /// <param name="sourceRectangle">
+        /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to draw.
         /// </param>
         /// <remarks>
         /// The method keeps the source image unchanged and returns the
@@ -26,10 +26,29 @@ namespace ImageProcessor
         /// <paramref name="target"/> is null or <paramref name="source"/> is null.
         /// </exception>
         /// <exception cref="System.ArgumentException">
-        /// <paramref name="rectangle"/> doesnt fit the dimension of the image.
+        /// <paramref name="sourceRectangle"/> doesnt fit the dimension of the image.
         /// </exception>
-        void Apply(ImageBase target, ImageBase source, Rectangle rectangle);
+        void Apply(ImageBase target, ImageBase source, Rectangle sourceRectangle);
 
+        /// <summary>
+        /// Applies the process to the specified portion of the specified <see cref="ImageBase"/> at the specified
+        /// location and with the specified size.
+        /// </summary>
+        /// <param name="target">Target image to apply the process to.</param>
+        /// <param name="source">The source image. Cannot be null.</param>
+        /// <param name="width">The target width.</param>
+        /// <param name="height">The target height.</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.
+        /// </param>
+        /// <param name="sourceRectangle">
+        /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to draw.
+        /// </param>
+        /// <remarks>
+        /// The method keeps the source image unchanged and returns the
+        /// the result of image process as new image.
+        /// </remarks>
         void Apply(ImageBase target, ImageBase source, int width, int height, Rectangle targetRectangle, Rectangle sourceRectangle);
     }
 }
diff --git a/src/ImageProcessor/ImageExtensions.cs b/src/ImageProcessor/ImageExtensions.cs
index 1b5196580..bfdd7ace9 100644
--- a/src/ImageProcessor/ImageExtensions.cs
+++ b/src/ImageProcessor/ImageExtensions.cs
@@ -55,22 +55,26 @@ namespace ImageProcessor
         /// <param name="source">The image this method extends.</param>
         /// <param name="processors">Any processors to apply to the image.</param>
         /// <returns>The <see cref="Image"/>.</returns>
-        public static Image Process(this Image source, params IImageProcessor[] processors) => Process(source, source.Bounds, processors);
+        public static Image Process(this Image source, params IImageProcessor[] processors)
+        {
+            return Process(source, source.Bounds, processors);
+        }
 
         /// <summary>
         /// Applies the collection of processors to the image.
         /// </summary>
         /// <param name="source">The image this method extends.</param>
-        /// <param name="rectangle">
-        /// The rectangle defining the bounds of the pixels the image filter with adjust.</param>
+        /// <param name="sourceRectangle">
+        /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to draw.
+        /// </param>
         /// <param name="processors">Any processors to apply to the image.</param>
         /// <returns>The <see cref="Image"/>.</returns>
-        public static Image Process(this Image source, Rectangle rectangle, params IImageProcessor[] processors)
+        public static Image Process(this Image source, Rectangle sourceRectangle, params IImageProcessor[] processors)
         {
             // ReSharper disable once LoopCanBeConvertedToQuery
             foreach (IImageProcessor filter in processors)
             {
-                source = PerformAction(source, true, (sourceImage, targetImage) => filter.Apply(targetImage, sourceImage, rectangle));
+                source = PerformAction(source, true, (sourceImage, targetImage) => filter.Apply(targetImage, sourceImage, sourceRectangle));
             }
 
             return source;
@@ -79,13 +83,29 @@ namespace ImageProcessor
         /// <summary>
         /// Applies the collection of processors to the image.
         /// </summary>
-        /// <param name="source">The image this method extends.</param>
-        /// <param name="rectangle">
-        /// The rectangle defining the bounds of the pixels the image filter with adjust.</param>
-        /// <param name="width"></param>
-        /// <param name="height"></param>
-        /// <param name="sourceRectangle"></param>
-        /// <param name="targetRectangle"></param>
+        /// <param name="source">The source image. Cannot be null.</param>
+        /// <param name="width">The target image width.</param>
+        /// <param name="height">The target image width.</param>
+        /// <param name="processors">Any processors to apply to the image.</param>
+        /// <returns>The <see cref="Image"/>.</returns>
+        public static Image Process(this Image source, int width, int height, params IImageProcessor[] processors)
+        {
+            return Process(source, width, height, source.Bounds, default(Rectangle), processors);
+        }
+
+        /// <summary>
+        /// Applies the collection of processors to the image.
+        /// </summary>
+        /// <param name="source">The source image. Cannot be null.</param>
+        /// <param name="width">The target image width.</param>
+        /// <param name="height">The target image width.</param>
+        /// <param name="sourceRectangle">
+        /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to draw.
+        /// </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.
+        /// </param>
         /// <param name="processors">Any processors to apply to the image.</param>
         /// <returns>The <see cref="Image"/>.</returns>
         public static Image Process(this Image source, int width, int height, Rectangle sourceRectangle, Rectangle targetRectangle, params IImageProcessor[] processors)
diff --git a/src/ImageProcessor/ImageProcessor.csproj b/src/ImageProcessor/ImageProcessor.csproj
index e8731d2fe..1207c97ff 100644
--- a/src/ImageProcessor/ImageProcessor.csproj
+++ b/src/ImageProcessor/ImageProcessor.csproj
@@ -180,7 +180,7 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Numerics\Rectangle.cs" />
     <Compile Include="Numerics\Size.cs" />
-    <Compile Include="Samplers\Lanczos3Resampler.cs" />
+    <Compile Include="Samplers\Lanczos5Resampler.cs" />
     <Compile Include="Samplers\BicubicResampler.cs" />
     <Compile Include="Samplers\ImageSampleExtensions.cs" />
     <Compile Include="Samplers\IResampler.cs" />
@@ -196,6 +196,7 @@
     <None Include="Formats\Gif\README.md" />
     <None Include="Formats\Jpg\README.md" />
     <None Include="packages.config" />
+    <AdditionalFiles Include="stylecop.json" />
   </ItemGroup>
   <ItemGroup>
     <None Include="Formats\Bmp\README.md" />
diff --git a/src/ImageProcessor/ParallelImageProcessor.cs b/src/ImageProcessor/ParallelImageProcessor.cs
index b1533cf65..ea913776c 100644
--- a/src/ImageProcessor/ParallelImageProcessor.cs
+++ b/src/ImageProcessor/ParallelImageProcessor.cs
@@ -19,7 +19,7 @@ namespace ImageProcessor
         public int Parallelism { get; set; } = Environment.ProcessorCount;
 
         /// <inheritdoc/>
-        public void Apply(ImageBase target, ImageBase source, Rectangle rectangle)
+        public void Apply(ImageBase target, ImageBase source, Rectangle sourceRectangle)
         {
             this.OnApply();
 
@@ -34,11 +34,11 @@ namespace ImageProcessor
                     int current = p;
                     tasks[p] = Task.Run(() =>
                     {
-                        int batchSize = rectangle.Height / partitionCount;
-                        int yStart = rectangle.Y + (current * batchSize);
-                        int yEnd = current == partitionCount - 1 ? rectangle.Bottom : yStart + batchSize;
+                        int batchSize = sourceRectangle.Height / partitionCount;
+                        int yStart = sourceRectangle.Y + (current * batchSize);
+                        int yEnd = current == partitionCount - 1 ? sourceRectangle.Bottom : yStart + batchSize;
 
-                        this.Apply(target, source, rectangle, yStart, yEnd);
+                        this.Apply(target, source, target.Bounds, sourceRectangle, yStart, yEnd);
                     });
                 }
 
@@ -46,7 +46,7 @@ namespace ImageProcessor
             }
             else
             {
-                this.Apply(target, source, rectangle, rectangle.Y, rectangle.Bottom);
+                this.Apply(target, source, target.Bounds, sourceRectangle, sourceRectangle.Y, sourceRectangle.Bottom);
             }
         }
 
@@ -102,22 +102,25 @@ namespace ImageProcessor
         {
         }
 
-        protected abstract void Apply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle, int startY, int endY);
-
         /// <summary>
-        /// Apply a process to an image to alter the pixels at the area of the specified rectangle.
+        /// Applies the process to the specified portion of the specified <see cref="ImageBase"/> at the specified location
+        /// and with the specified size.
         /// </summary>
         /// <param name="target">Target image to apply the process to.</param>
         /// <param name="source">The source image. Cannot be null.</param>
-        /// <param name="rectangle">
-        /// The rectangle, which defines the area of the image where the process should be applied to.
+        /// <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.
         /// </param>
-        /// <param name="startY">The index of the row within the image to start processing.</param>
-        /// <param name="endY">The index of the row within the image to end processing.</param>
+        /// <param name="sourceRectangle">
+        /// The <see cref="Rectangle"/> structure that specifies the portion of the image object to draw.
+        /// </param>
+        /// <param name="startY">The index of the row within the source image to start processing.</param>
+        /// <param name="endY">The index of the row within the source image to end processing.</param>
         /// <remarks>
         /// The method keeps the source image unchanged and returns the
-        /// the result of image processing filter as new image.
+        /// the result of image process as new image.
         /// </remarks>
-        protected abstract void Apply(ImageBase target, ImageBase source, Rectangle rectangle, int startY, int endY);
+        protected abstract void Apply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle, int startY, int endY);
     }
 }
diff --git a/src/ImageProcessor/Samplers/Lanczos3Resampler.cs b/src/ImageProcessor/Samplers/Lanczos5Resampler.cs
similarity index 90%
rename from src/ImageProcessor/Samplers/Lanczos3Resampler.cs
rename to src/ImageProcessor/Samplers/Lanczos5Resampler.cs
index 9593c1aea..1d7008d58 100644
--- a/src/ImageProcessor/Samplers/Lanczos3Resampler.cs
+++ b/src/ImageProcessor/Samplers/Lanczos5Resampler.cs
@@ -9,10 +9,10 @@ namespace ImageProcessor.Samplers
     /// The function implements the Lanczos kernel algorithm as described on
     /// <see href="https://en.wikipedia.org/wiki/Lanczos_resampling#Algorithm">Wikipedia</see>
     /// </summary>
-    public class Lanczos3Resampler : IResampler
+    public class Lanczos5Resampler : IResampler
     {
         /// <inheritdoc/>
-        public double Radius => 3;
+        public double Radius => 5;
 
         /// <inheritdoc/>
         public double GetValue(double x)
diff --git a/src/ImageProcessor/Samplers/Resize.cs b/src/ImageProcessor/Samplers/Resize.cs
index 26dc44d7d..3dc3b166f 100644
--- a/src/ImageProcessor/Samplers/Resize.cs
+++ b/src/ImageProcessor/Samplers/Resize.cs
@@ -1,7 +1,15 @@
-using System;
+// <copyright file="Resize.cs" company="James South">
+// Copyright © James South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
 
 namespace ImageProcessor.Samplers
 {
+    using System;
+
+    /// <summary>
+    /// Provides methods that allow the resizing of images using various resampling algorithms.
+    /// </summary>
     public class Resize : ParallelImageProcessor
     {
         /// <summary>
@@ -23,13 +31,7 @@ namespace ImageProcessor.Samplers
         public IResampler Sampler { get; }
 
         /// <inheritdoc/>
-        protected override void Apply(
-            ImageBase target,
-            ImageBase source,
-            Rectangle targetRectangle,
-            Rectangle sourceRectangle,
-            int startY,
-            int endY)
+        protected override void Apply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle, int startY, int endY)
         {
             int sourceWidth = source.Width;
             int sourceHeight = source.Height;
@@ -126,11 +128,5 @@ namespace ImageProcessor.Samplers
                 }
             }
         }
-
-        /// <inheritdoc/>
-        protected override void Apply(ImageBase target, ImageBase source, Rectangle rectangle, int startY, int endY)
-        {
-            throw new NotImplementedException();
-        }
     }
 }
diff --git a/tests/ImageProcessor.Tests/Formats/EncoderDecoderTests.cs b/tests/ImageProcessor.Tests/Formats/EncoderDecoderTests.cs
deleted file mode 100644
index 74c8ab304..000000000
--- a/tests/ImageProcessor.Tests/Formats/EncoderDecoderTests.cs
+++ /dev/null
@@ -1,63 +0,0 @@
-namespace ImageProcessor.Tests
-{
-    using System.Diagnostics;
-    using System.IO;
-
-    using Formats;
-
-    using Xunit;
-
-    public class EncoderDecoderTests
-    {
-        [Theory]
-        [InlineData("../../TestImages/Formats/Jpg/Backdrop.jpg")]
-        [InlineData("../../TestImages/Formats/Gif/a.gif")]
-        [InlineData("../../TestImages/Formats/Gif/leaf.gif")]
-        [InlineData("../../TestImages/Formats/Gif/ani.gif")]
-        [InlineData("../../TestImages/Formats/Gif/ani2.gif")]
-        [InlineData("../../TestImages/Formats/Gif/giphy.gif")]
-        [InlineData("../../TestImages/Formats/Bmp/Car.bmp")]
-        [InlineData("../../TestImages/Formats/Png/cmyk.png")]
-        public void DecodeThenEncodeImageFromStreamShouldSucceed(string filename)
-        {
-            if (!Directory.Exists("Encoded"))
-            {
-                Directory.CreateDirectory("Encoded");
-            }
-
-            FileStream stream = File.OpenRead(filename);
-            Stopwatch watch = Stopwatch.StartNew();
-            Image image = new Image(stream);
-
-            string encodedFilename = "Encoded/" + Path.GetFileName(filename);
-
-            using (FileStream output = File.OpenWrite(encodedFilename))
-            {
-                image.Save(output);
-            }
-
-            Trace.WriteLine($"{filename} : {watch.ElapsedMilliseconds}ms");
-        }
-
-        [Theory]
-        [InlineData("../../TestImages/Formats/Jpg/Backdrop.jpg")]
-        [InlineData("../../TestImages/Formats/Bmp/Car.bmp")]
-        [InlineData("../../TestImages/Formats/Png/cmyk.png")]
-        public void QuantizedImageShouldPreserveMaximumColorPrecision(string filename)
-        {
-            if (!Directory.Exists("Quantized"))
-            {
-                Directory.CreateDirectory("Quantized");
-            }
-
-            Image image = new Image(File.OpenRead(filename));
-            IQuantizer quantizer = new OctreeQuantizer();
-            QuantizedImage quantizedImage = quantizer.Quantize(image);
-
-            using (FileStream output = File.OpenWrite($"Quantized/{ Path.GetFileName(filename) }"))
-            {
-                quantizedImage.ToImage().Save(output);
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/ImageProcessor.Tests/ImageProcessor.Tests.csproj b/tests/ImageProcessor.Tests/ImageProcessor.Tests.csproj
index 477b1b909..fd13cac0e 100644
--- a/tests/ImageProcessor.Tests/ImageProcessor.Tests.csproj
+++ b/tests/ImageProcessor.Tests/ImageProcessor.Tests.csproj
@@ -53,14 +53,15 @@
   <ItemGroup>
     <Compile Include="Colors\ColorConversionTests.cs" />
     <Compile Include="Colors\ColorTests.cs" />
-    <Compile Include="Filters\FilterTests.cs" />
-    <Compile Include="Formats\EncoderDecoderTests.cs" />
+    <Compile Include="Processors\Filters\FilterTests.cs" />
+    <Compile Include="Processors\Formats\EncoderDecoderTests.cs" />
     <Compile Include="Helpers\GuardTests.cs" />
     <Compile Include="Numerics\RectangleTests.cs" />
     <Compile Include="Numerics\PointTests.cs" />
     <Compile Include="Numerics\SizeTests.cs" />
+    <Compile Include="Processors\ProcessorTestBase.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
-    <Compile Include="Samplers\SamplerTests.cs" />
+    <Compile Include="Processors\Samplers\SamplerTests.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />
diff --git a/tests/ImageProcessor.Tests/ImageProcessor.Tests.csproj.DotSettings b/tests/ImageProcessor.Tests/ImageProcessor.Tests.csproj.DotSettings
index 0b25413f0..cb4957f1e 100644
--- a/tests/ImageProcessor.Tests/ImageProcessor.Tests.csproj.DotSettings
+++ b/tests/ImageProcessor.Tests/ImageProcessor.Tests.csproj.DotSettings
@@ -1,4 +1,9 @@
 <wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
 	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=colors/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=formats/@EntryIndexedValue">True</s:Boolean>
-	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=numerics/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>
\ No newline at end of file
+	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=helpers/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=numerics/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=processors/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=processors_005Cfilters/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=processors_005Cformats/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=processors_005Csamplers/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/tests/ImageProcessor.Tests/Filters/FilterTests.cs b/tests/ImageProcessor.Tests/Processors/Filters/FilterTests.cs
similarity index 78%
rename from tests/ImageProcessor.Tests/Filters/FilterTests.cs
rename to tests/ImageProcessor.Tests/Processors/Filters/FilterTests.cs
index 9eed6a977..dac009328 100644
--- a/tests/ImageProcessor.Tests/Filters/FilterTests.cs
+++ b/tests/ImageProcessor.Tests/Processors/Filters/FilterTests.cs
@@ -1,5 +1,5 @@
 
-namespace ImageProcessor.Tests.Filters
+namespace ImageProcessor.Tests
 {
     using System.Collections.Generic;
     using System.Diagnostics;
@@ -10,20 +10,8 @@ namespace ImageProcessor.Tests.Filters
 
     using Xunit;
 
-    public class FilterTests
+    public class FilterTests : ProcessorTestBase
     {
-        public static readonly List<string> Files = new List<string>
-        {
-            //{ "../../TestImages/Formats/Jpg/Backdrop.jpg"},
-            //{ "../../TestImages/Formats/Bmp/Car.bmp" },
-            //{ "../../TestImages/Formats/Png/cmyk.png" },
-            //{ "../../TestImages/Formats/Gif/a.gif" },
-            //{ "../../TestImages/Formats/Gif/leaf.gif" },
-            { "../../TestImages/Formats/Gif/ani.gif" },
-            //{ "../../TestImages/Formats/Gif/ani2.gif" },
-            //{ "../../TestImages/Formats/Gif/giphy.gif" },
-        };
-
         public static readonly TheoryData<string, IImageProcessor> Filters = new TheoryData<string, IImageProcessor>
         {
             { "Contrast-50", new Contrast(50) },
diff --git a/tests/ImageProcessor.Tests/Processors/Formats/EncoderDecoderTests.cs b/tests/ImageProcessor.Tests/Processors/Formats/EncoderDecoderTests.cs
new file mode 100644
index 000000000..a1af332e8
--- /dev/null
+++ b/tests/ImageProcessor.Tests/Processors/Formats/EncoderDecoderTests.cs
@@ -0,0 +1,63 @@
+namespace ImageProcessor.Tests
+{
+    using System.Diagnostics;
+    using System.IO;
+
+    using Formats;
+
+    using Xunit;
+
+    public class EncoderDecoderTests : ProcessorTestBase
+    {
+        [Fact]
+        public void DecodeThenEncodeImageFromStreamShouldSucceed()
+        {
+            if (!Directory.Exists("Encoded"))
+            {
+                Directory.CreateDirectory("Encoded");
+            }
+
+            foreach (string file in Files)
+            {
+                using (FileStream stream = File.OpenRead(file))
+                {
+                    Stopwatch watch = Stopwatch.StartNew();
+                    Image image = new Image(stream);
+
+                    string encodedFilename = "Encoded/" + Path.GetFileName(file);
+
+                    using (FileStream output = File.OpenWrite(encodedFilename))
+                    {
+                        image.Save(output);
+                    }
+
+                    Trace.WriteLine($"{file} : {watch.ElapsedMilliseconds}ms");
+                }
+            }
+        }
+
+        [Fact]
+        public void QuantizedImageShouldPreserveMaximumColorPrecision()
+        {
+            if (!Directory.Exists("Quantized"))
+            {
+                Directory.CreateDirectory("Quantized");
+            }
+
+            foreach (string file in Files)
+            {
+                using (FileStream stream = File.OpenRead(file))
+                {
+                    Image image = new Image(stream);
+                    IQuantizer quantizer = new OctreeQuantizer();
+                    QuantizedImage quantizedImage = quantizer.Quantize(image);
+
+                    using (FileStream output = File.OpenWrite($"Quantized/{Path.GetFileName(file)}"))
+                    {
+                        quantizedImage.ToImage().Save(output);
+                    }
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/ImageProcessor.Tests/Processors/ProcessorTestBase.cs b/tests/ImageProcessor.Tests/Processors/ProcessorTestBase.cs
new file mode 100644
index 000000000..d8399d73f
--- /dev/null
+++ b/tests/ImageProcessor.Tests/Processors/ProcessorTestBase.cs
@@ -0,0 +1,32 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="ProcessorTestBase.cs" company="James South">
+//   Copyright © James South and contributors.
+//   Licensed under the Apache License, Version 2.0.
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+
+namespace ImageProcessor.Tests
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// The processor test base.
+    /// </summary>
+    public abstract class ProcessorTestBase
+    {
+        /// <summary>
+        /// The collection of image files to test against.
+        /// </summary>
+        public static readonly List<string> Files = new List<string>
+        {
+            "../../TestImages/Formats/Jpg/Backdrop.jpg",
+            "../../TestImages/Formats/Bmp/Car.bmp",
+            "../../TestImages/Formats/Png/cmyk.png",
+            "../../TestImages/Formats/Gif/leaf.gif"
+
+            // { "../../TestImages/Formats/Gif/ani.gif" },
+            // { "../../TestImages/Formats/Gif/ani2.gif" },
+            // { "../../TestImages/Formats/Gif/giphy.gif" },
+        };
+    }
+}
diff --git a/tests/ImageProcessor.Tests/Samplers/SamplerTests.cs b/tests/ImageProcessor.Tests/Processors/Samplers/SamplerTests.cs
similarity index 61%
rename from tests/ImageProcessor.Tests/Samplers/SamplerTests.cs
rename to tests/ImageProcessor.Tests/Processors/Samplers/SamplerTests.cs
index a9449fd9f..ab4511ad3 100644
--- a/tests/ImageProcessor.Tests/Samplers/SamplerTests.cs
+++ b/tests/ImageProcessor.Tests/Processors/Samplers/SamplerTests.cs
@@ -1,38 +1,25 @@
 
-namespace ImageProcessor.Tests.Filters
+namespace ImageProcessor.Tests
 {
-    using System.Collections.Generic;
     using System.Diagnostics;
     using System.IO;
 
-    using Samplers;
+    using ImageProcessor.Samplers;
 
     using Xunit;
 
-    public class SamplerTests
+    public class SamplerTests : ProcessorTestBase
     {
-        public static readonly List<string> Files = new List<string>
-        {
-            { "../../TestImages/Formats/Jpg/Backdrop.jpg" },
-            { "../../TestImages/Formats/Bmp/Car.bmp" },
-            { "../../TestImages/Formats/Png/cmyk.png" },
-            //{ "../../TestImages/Formats/Gif/a.gif" },
-            { "../../TestImages/Formats/Gif/leaf.gif" },
-            //{ "../../TestImages/Formats/Gif/ani.gif" },
-            //{ "../../TestImages/Formats/Gif/ani2.gif" },
-            //{ "../../TestImages/Formats/Gif/giphy.gif" },
-        };
-
         public static readonly TheoryData<string, IResampler> Samplers =
             new TheoryData<string, IResampler>
             {
                 { "Bicubic", new BicubicResampler() },
-                { "Lanczos3", new Lanczos3Resampler() }
+                //{ "Lanczos3", new Lanczos5Resampler() }
             };
 
         [Theory]
         [MemberData("Samplers")]
-        public void ResizeImage(string name, IResampler sampler)
+        public void ImageShouldResize(string name, IResampler sampler)
         {
             if (!Directory.Exists("Resized"))
             {
@@ -48,7 +35,7 @@ namespace ImageProcessor.Tests.Filters
                     string filename = Path.GetFileNameWithoutExtension(file) + "-" + name + Path.GetExtension(file);
                     using (FileStream output = File.OpenWrite($"Resized/{filename}"))
                     {
-                        image.Resize(900, 900, sampler).Save(output);
+                        image.Resize(500, 500, sampler).Save(output);
                     }
 
                     Trace.WriteLine($"{name}: {watch.ElapsedMilliseconds}ms");
@@ -65,7 +52,7 @@ namespace ImageProcessor.Tests.Filters
         [InlineData(2, 0)]
         public static void Lanczos3WindowOscillatesCorrectly(double x, double expected)
         {
-            Lanczos3Resampler sampler = new Lanczos3Resampler();
+            Lanczos5Resampler sampler = new Lanczos5Resampler();
             double result = sampler.GetValue(x);
 
             Assert.Equal(result, expected);
diff --git a/tests/ImageProcessor.Tests/TestImages/Formats/Gif/a.gif b/tests/ImageProcessor.Tests/TestImages/Formats/Gif/a.gif
deleted file mode 100644
index d89e799a6..000000000
Binary files a/tests/ImageProcessor.Tests/TestImages/Formats/Gif/a.gif and /dev/null differ