Add a few comments [skip ci]

Former-commit-id: c62a04c3030c1322782ccd7ec9823f1ccb2629a2
Former-commit-id: 097737d5586667952794d078b6d65eb198f53c48
Former-commit-id: 26b4e34da805f42ddd0bec44127020756f7140dc

src/ImageProcessorCore/Samplers/Resamplers/CatmullRomResampler.cs

@@ -6,7 +6,9 @@
 namespace ImageProcessorCore
 {
     /// <summary>
-    /// The function implements the Catmull-Rom algorithm.
+    /// The Catmull-Rom filter is a well known standard Cubic Filter often used as a interpolation function.
+    /// This filter produces a reasonably sharp edge, but without a the pronounced gradient change on large 
+    /// scale image enlargements that a 'Lagrange' filter can produce.
     /// <see href="http://www.imagemagick.org/Usage/filter/#cubic_bc"/>
     /// </summary>
     public class CatmullRomResampler : IResampler

src/ImageProcessorCore/Samplers/Resamplers/HermiteResampler.cs

@@ -6,7 +6,8 @@
 namespace ImageProcessorCore.Processors
 {
     /// <summary>
-    /// The function implements the hermite algorithm.
+    /// The Hermite filter is type of smoothed triangular interpolation Filter, 
+    /// This filter rounds off strong edges while preserving flat 'color levels' in the original image.
     /// <see href="http://www.imagemagick.org/Usage/filter/#cubic_bc"/>
     /// </summary>
     public class HermiteResampler : IResampler

src/ImageProcessorCore/Samplers/Resamplers/Lanczos3Resampler.cs

@@ -8,6 +8,7 @@ namespace ImageProcessorCore
     /// <summary>
     /// The function implements the Lanczos kernel algorithm as described on
     /// <see href="https://en.wikipedia.org/wiki/Lanczos_resampling#Algorithm">Wikipedia</see>
+    /// with a radius of 3 pixels.
     /// </summary>
     public class Lanczos3Resampler : IResampler
     {

src/ImageProcessorCore/Samplers/Resamplers/Lanczos5Resampler.cs

@@ -8,6 +8,7 @@ namespace ImageProcessorCore
     /// <summary>
     /// The function implements the Lanczos kernel algorithm as described on
     /// <see href="https://en.wikipedia.org/wiki/Lanczos_resampling#Algorithm">Wikipedia</see>
+    /// with a radius of 5 pixels.
     /// </summary>
     public class Lanczos5Resampler : IResampler
     {

src/ImageProcessorCore/Samplers/Resamplers/Lanczos8Resampler.cs

@@ -8,6 +8,7 @@ namespace ImageProcessorCore
     /// <summary>
     /// The function implements the Lanczos kernel algorithm as described on
     /// <see href="https://en.wikipedia.org/wiki/Lanczos_resampling#Algorithm">Wikipedia</see>
+    /// with a radius of 8 pixels.
     /// </summary>
     public class Lanczos8Resampler : IResampler
     {