Moar updates

- EntopyCrop
- Color definitions
- Pixelate


Former-commit-id: 5605d078e59f63faf9354f1d80093e6c26096bff
Former-commit-id: c0ca96e94e189a760fe3d77f69d3470efc8d385f
Former-commit-id: ae7c743d17bde56511d6b312b9fbf9163f99da9c

README.md

@@ -59,7 +59,7 @@ git clone https://github.com/JimBobSquarePants/ImageProcessor
  - [x] Rectangle
  - [x] Size
  - [x] Point
- - [ ] Sphere
+ - [ ] Ellipse
 - Resampling algorithms. (Performance improvements?)
  - [x] Box
  - [x] Bicubic
@@ -77,7 +77,7 @@ git clone https://github.com/JimBobSquarePants/ImageProcessor
 - Cropping
  - [x] Rectangular Crop
  - [ ] Elliptical Crop
- - [ ] Entropy Crop
+ - [x] Entropy Crop
 - Rotation
  - [ ] Flip (90, 270, FlipType etc. Need help) 
  - [ ] Rotate by angle (Need help)
@@ -109,6 +109,7 @@ git clone https://github.com/JimBobSquarePants/ImageProcessor
  - [x] Invert
  - [x] BackgroundColor
  - [x] Brightness
+ - [x] Pixelate
  - [x] Saturation
  - [ ] Hue
  - [x] Blend

src/ImageProcessor/Colors/ColorDefinitions.cs

@@ -25,7 +25,7 @@ namespace ImageProcessor
         /// <summary>
         /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #7FFFD4.
         /// </summary>
-        public static readonly Color AquaMarine = new Color(127 / 255f, 1, 212 / 255f);
+        public static readonly Color Aquamarine = new Color(127 / 255f, 1, 212 / 255f);
 
         /// <summary>
         /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #F0FFFF.
@@ -47,75 +47,669 @@ namespace ImageProcessor
         /// </summary>
         public static readonly Color Black = new Color(0, 0, 0);
 
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFEBCD.
+        /// </summary>
+        public static readonly Color BlanchedAlmond = new Color(1, 235 / 255f, 205 / 255f);
+
         /// <summary>
         /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #0000FF.
         /// </summary>
         public static readonly Color Blue = new Color(0, 0, 1);
 
         /// <summary>
-        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #C0C0C0.
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #8A2BE2.
         /// </summary>
-        public static readonly Color Silver = new Color(192 / 255f, 192 / 255f, 192 / 255f);
+        public static readonly Color BlueViolet = new Color(138 / 255f, 43 / 255f, 226 / 255f);
 
         /// <summary>
-        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #808080.
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #A52A2A.
         /// </summary>
-        public static readonly Color Gray = new Color(128 / 255f, 128 / 255f, 128 / 255f);
+        public static readonly Color Brown = new Color(165 / 255f, 42 / 255f, 42 / 255f);
 
         /// <summary>
-        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFFFFF.
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #DEB887.
         /// </summary>
-        public static readonly Color White = new Color(1, 1, 1);
+        public static readonly Color BurlyWood = new Color(222 / 255f, 184 / 255f, 135 / 255f);
 
         /// <summary>
-        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #800000.
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #5F9EA0.
         /// </summary>
-        public static readonly Color Maroon = new Color(128 / 255f, 0, 0);
+        public static readonly Color CadetBlue = new Color(95 / 255f, 158 / 255f, 160 / 255f);
 
         /// <summary>
-        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FF0000.
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #7FFF00.
         /// </summary>
-        public static readonly Color Red = new Color(1, 0, 0);
+        public static readonly Color Chartreuse = new Color(127 / 255f, 1, 0);
 
         /// <summary>
-        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #800080.
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #D2691E.
         /// </summary>
-        public static readonly Color Purple = new Color(128 / 255f, 0, 128 / 255f);
+        public static readonly Color Chocolate = new Color(210 / 255f, 105 / 255f, 30 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FF7F50.
+        /// </summary>
+        public static readonly Color Coral = new Color(1, 127 / 255f, 80 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #6495ED.
+        /// </summary>
+        public static readonly Color CornflowerBlue = new Color(100 / 255f, 149 / 255f, 237 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFF8DC.
+        /// </summary>
+        public static readonly Color Cornsilk = new Color(1, 248 / 255f, 220 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #DC143C.
+        /// </summary>
+        public static readonly Color Crimson = new Color(220 / 255f, 20 / 255f, 60 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #00FFFF.
+        /// </summary>
+        public static readonly Color Cyan = new Color(0, 1, 1);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #00008B.
+        /// </summary>
+        public static readonly Color DarkBlue = new Color(0, 0, 139 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #008B8B.
+        /// </summary>
+        public static readonly Color DarkCyan = new Color(0, 139 / 255f, 139 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #B8860B.
+        /// </summary>
+        public static readonly Color DarkGoldenrod = new Color(184 / 255f, 134 / 255f, 11 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #A9A9A9.
+        /// </summary>
+        public static readonly Color DarkGray = new Color(169 / 255f, 169 / 255f, 169 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #006400.
+        /// </summary>
+        public static readonly Color DarkGreen = new Color(0, 100 / 255f, 0);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #BDB76B.
+        /// </summary>
+        public static readonly Color DarkKhaki = new Color(189 / 255f, 183 / 255f, 107 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #8B008B.
+        /// </summary>
+        public static readonly Color DarkMagenta = new Color(139 / 255f, 0, 139 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #556B2F.
+        /// </summary>
+        public static readonly Color DarkOliveGreen = new Color(85 / 255f, 107 / 255f, 47 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FF8C00.
+        /// </summary>
+        public static readonly Color DarkOrange = new Color(1, 140 / 255f, 0);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #9932CC.
+        /// </summary>
+        public static readonly Color DarkOrchid = new Color(153 / 255f, 50 / 255f, 204 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #8B0000.
+        /// </summary>
+        public static readonly Color DarkRed = new Color(139 / 255f, 0, 0);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #E9967A.
+        /// </summary>
+        public static readonly Color DarkSalmon = new Color(233 / 255f, 150 / 255f, 122 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #8FBC8B.
+        /// </summary>
+        public static readonly Color DarkSeaGreen = new Color(143 / 255f, 188 / 255f, 139 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #483D8B.
+        /// </summary>
+        public static readonly Color DarkSlateBlue = new Color(72 / 255f, 61 / 255f, 139 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #2F4F4F.
+        /// </summary>
+        public static readonly Color DarkSlateGray = new Color(47 / 255f, 79 / 255f, 79 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #00CED1.
+        /// </summary>
+        public static readonly Color DarkTurquoise = new Color(0, 206 / 255f, 209 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #9400D3.
+        /// </summary>
+        public static readonly Color DarkViolet = new Color(148 / 255f, 0, 211 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FF1493.
+        /// </summary>
+        public static readonly Color DeepPink = new Color(1, 20 / 255f, 147 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #00BFFF.
+        /// </summary>
+        public static readonly Color DeepSkyBlue = new Color(0, 191 / 255f, 1);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #696969.
+        /// </summary>
+        public static readonly Color DimGray = new Color(105 / 255f, 105 / 255f, 105 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #1E90FF.
+        /// </summary>
+        public static readonly Color DodgerBlue = new Color(30 / 255f, 144 / 255f, 1);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #B22222.
+        /// </summary>
+        public static readonly Color Firebrick = new Color(178 / 255f, 34 / 255f, 34 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFFAF0.
+        /// </summary>
+        public static readonly Color FloralWhite = new Color(1, 250 / 255f, 240 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #228B22.
+        /// </summary>
+        public static readonly Color ForestGreen = new Color(34 / 255f, 139 / 255f, 34 / 255f);
 
         /// <summary>
         /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FF00FF.
         /// </summary>
         public static readonly Color Fuchsia = new Color(1, 0, 1);
 
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #DCDCDC.
+        /// </summary>
+        public static readonly Color Gainsboro = new Color(220 / 255f, 220 / 255f, 220 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #F8F8FF.
+        /// </summary>
+        public static readonly Color GhostWhite = new Color(248 / 255f, 248 / 255f, 1);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFD700.
+        /// </summary>
+        public static readonly Color Gold = new Color(1, 215 / 255f, 0);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #DAA520.
+        /// </summary>
+        public static readonly Color Goldenrod = new Color(218 / 255f, 165 / 255f, 32 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #808080.
+        /// </summary>
+        public static readonly Color Gray = new Color(128 / 255f, 128 / 255f, 128 / 255f);
+
         /// <summary>
         /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #008000.
         /// </summary>
         public static readonly Color Green = new Color(0, 128 / 255f, 0);
 
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #ADFF2F.
+        /// </summary>
+        public static readonly Color GreenYellow = new Color(173 / 255f, 1, 47 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #F0FFF0.
+        /// </summary>
+        public static readonly Color Honeydew = new Color(240 / 255f, 1, 240 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FF69B4.
+        /// </summary>
+        public static readonly Color HotPink = new Color(1, 105 / 255f, 180 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #CD5C5C.
+        /// </summary>
+        public static readonly Color IndianRed = new Color(205 / 255f, 92 / 255f, 92 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #4B0082.
+        /// </summary>
+        public static readonly Color Indigo = new Color(75 / 255f, 0, 130 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFFFF0.
+        /// </summary>
+        public static readonly Color Ivory = new Color(1, 1, 240 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #F0E68C.
+        /// </summary>
+        public static readonly Color Khaki = new Color(240 / 255f, 230 / 255f, 140 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #E6E6FA.
+        /// </summary>
+        public static readonly Color Lavender = new Color(230 / 255f, 230 / 255f, 250 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFF0F5.
+        /// </summary>
+        public static readonly Color LavenderBlush = new Color(1, 240 / 255f, 245 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #7CFC00.
+        /// </summary>
+        public static readonly Color LawnGreen = new Color(124 / 255f, 252 / 255f, 0);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFFACD.
+        /// </summary>
+        public static readonly Color LemonChiffon = new Color(1, 250 / 255f, 205 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #ADD8E6.
+        /// </summary>
+        public static readonly Color LightBlue = new Color(173 / 255f, 216 / 255f, 230 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #F08080.
+        /// </summary>
+        public static readonly Color LightCoral = new Color(240 / 255f, 128 / 255f, 128 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #E0FFFF.
+        /// </summary>
+        public static readonly Color LightCyan = new Color(224 / 255f, 1, 1);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FAFAD2.
+        /// </summary>
+        public static readonly Color LightGoldenrodYellow = new Color(250 / 255f, 250 / 255f, 210 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #90EE90.
+        /// </summary>
+        public static readonly Color LightGreen = new Color(144 / 255f, 238 / 255f, 144 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #D3D3D3.
+        /// </summary>
+        public static readonly Color LightGray = new Color(211 / 255f, 211 / 255f, 211 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFB6C1.
+        /// </summary>
+        public static readonly Color LightPink = new Color(1, 182 / 255f, 193 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFA07A.
+        /// </summary>
+        public static readonly Color LightSalmon = new Color(1, 160 / 255f, 122 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #20B2AA.
+        /// </summary>
+        public static readonly Color LightSeaGreen = new Color(32 / 255f, 178 / 255f, 170 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #87CEFA.
+        /// </summary>
+        public static readonly Color LightSkyBlue = new Color(135 / 255f, 206 / 255f, 250 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #778899.
+        /// </summary>
+        public static readonly Color LightSlateGray = new Color(119 / 255f, 136 / 255f, 153 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #B0C4DE.
+        /// </summary>
+        public static readonly Color LightSteelBlue = new Color(176 / 255f, 196 / 255f, 222 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFFFE0.
+        /// </summary>
+        public static readonly Color LightYellow = new Color(1, 1, 224 / 255f);
+
         /// <summary>
         /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #00FF00.
         /// </summary>
         public static readonly Color Lime = new Color(0, 1, 0);
 
         /// <summary>
-        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #808000.
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #32CD32.
         /// </summary>
-        public static readonly Color Olive = new Color(128 / 255f, 128 / 255f, 0);
+        public static readonly Color LimeGreen = new Color(50 / 255f, 205 / 255f, 50 / 255f);
 
         /// <summary>
-        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFFF00.
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FAF0E6.
         /// </summary>
-        public static readonly Color Yellow = new Color(1, 1, 0);
+        public static readonly Color Linen = new Color(250 / 255f, 240 / 255f, 230 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FF00FF.
+        /// </summary>
+        public static readonly Color Magenta = new Color(1, 0, 1);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #800000.
+        /// </summary>
+        public static readonly Color Maroon = new Color(128 / 255f, 0, 0);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #66CDAA.
+        /// </summary>
+        public static readonly Color MediumAquamarine = new Color(102 / 255f, 205 / 255f, 170 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #0000CD.
+        /// </summary>
+        public static readonly Color MediumBlue = new Color(0, 0, 205 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #BA55D3.
+        /// </summary>
+        public static readonly Color MediumOrchid = new Color(186 / 255f, 85 / 255f, 211 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #9370DB.
+        /// </summary>
+        public static readonly Color MediumPurple = new Color(147 / 255f, 112 / 255f, 219 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #3CB371.
+        /// </summary>
+        public static readonly Color MediumSeaGreen = new Color(60 / 255f, 179 / 255f, 113 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #7B68EE.
+        /// </summary>
+        public static readonly Color MediumSlateBlue = new Color(123 / 255f, 104 / 255f, 238 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #00FA9A.
+        /// </summary>
+        public static readonly Color MediumSpringGreen = new Color(0, 250 / 255f, 154 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #48D1CC.
+        /// </summary>
+        public static readonly Color MediumTurquoise = new Color(72 / 255f, 209 / 255f, 204 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #C71585.
+        /// </summary>
+        public static readonly Color MediumVioletRed = new Color(199 / 255f, 21 / 255f, 133 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #191970.
+        /// </summary>
+        public static readonly Color MidnightBlue = new Color(25 / 255f, 25 / 255f, 112 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #F5FFFA.
+        /// </summary>
+        public static readonly Color MintCream = new Color(245 / 255f, 1, 250 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFE4E1.
+        /// </summary>
+        public static readonly Color MistyRose = new Color(1, 228 / 255f, 225 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFE4B5.
+        /// </summary>
+        public static readonly Color Moccasin = new Color(1, 228 / 255f, 181 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFDEAD.
+        /// </summary>
+        public static readonly Color NavajoWhite = new Color(1, 222 / 255f, 173 / 255f);
 
         /// <summary>
         /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #000080.
         /// </summary>
         public static readonly Color Navy = new Color(0, 0, 128 / 255f);
 
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FDF5E6.
+        /// </summary>
+        public static readonly Color OldLace = new Color(253 / 255f, 245 / 255f, 230 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #808000.
+        /// </summary>
+        public static readonly Color Olive = new Color(128 / 255f, 128 / 255f, 0);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #6B8E23.
+        /// </summary>
+        public static readonly Color OliveDrab = new Color(107 / 255f, 142 / 255f, 35 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFA500.
+        /// </summary>
+        public static readonly Color Orange = new Color(1, 165 / 255f, 0);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FF4500.
+        /// </summary>
+        public static readonly Color OrangeRed = new Color(1, 69 / 255f, 0);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #DA70D6.
+        /// </summary>
+        public static readonly Color Orchid = new Color(218 / 255f, 112 / 255f, 214 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #EEE8AA.
+        /// </summary>
+        public static readonly Color PaleGoldenrod = new Color(238 / 255f, 232 / 255f, 170 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #98FB98.
+        /// </summary>
+        public static readonly Color PaleGreen = new Color(152 / 255f, 251 / 255f, 152 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #AFEEEE.
+        /// </summary>
+        public static readonly Color PaleTurquoise = new Color(175 / 255f, 238 / 255f, 238 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #DB7093.
+        /// </summary>
+        public static readonly Color PaleVioletRed = new Color(219 / 255f, 112 / 255f, 147 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFEFD5.
+        /// </summary>
+        public static readonly Color PapayaWhip = new Color(1, 239 / 255f, 213 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFDAB9.
+        /// </summary>
+        public static readonly Color PeachPuff = new Color(1, 218 / 255f, 185 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #CD853F.
+        /// </summary>
+        public static readonly Color Peru = new Color(205 / 255f, 133 / 255f, 63 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFC0CB.
+        /// </summary>
+        public static readonly Color Pink = new Color(1, 192 / 255f, 203 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #DDA0DD.
+        /// </summary>
+        public static readonly Color Plum = new Color(221 / 255f, 160 / 255f, 221 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #B0E0E6.
+        /// </summary>
+        public static readonly Color PowderBlue = new Color(176 / 255f, 224 / 255f, 230 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #800080.
+        /// </summary>
+        public static readonly Color Purple = new Color(128 / 255f, 0, 128 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #663399.
+        /// </summary>
+        public static readonly Color RebeccaPurple = new Color(102 / 255f, 51 / 255f, 153 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FF0000.
+        /// </summary>
+        public static readonly Color Red = new Color(1, 0, 0);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #BC8F8F.
+        /// </summary>
+        public static readonly Color RosyBrown = new Color(188 / 255f, 143 / 255f, 143 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #4169E1.
+        /// </summary>
+        public static readonly Color RoyalBlue = new Color(65 / 255f, 105 / 255f, 225 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #8B4513.
+        /// </summary>
+        public static readonly Color SaddleBrown = new Color(139 / 255f, 69 / 255f, 19 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FA8072.
+        /// </summary>
+        public static readonly Color Salmon = new Color(250 / 255f, 128 / 255f, 114 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #F4A460.
+        /// </summary>
+        public static readonly Color SandyBrown = new Color(244 / 255f, 164 / 255f, 96 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #2E8B57.
+        /// </summary>
+        public static readonly Color SeaGreen = new Color(46 / 255f, 139 / 255f, 87 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFF5EE.
+        /// </summary>
+        public static readonly Color SeaShell = new Color(1, 245 / 255f, 238 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #A0522D.
+        /// </summary>
+        public static readonly Color Sienna = new Color(160 / 255f, 82 / 255f, 45 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #C0C0C0.
+        /// </summary>
+        public static readonly Color Silver = new Color(192 / 255f, 192 / 255f, 192 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #87CEEB.
+        /// </summary>
+        public static readonly Color SkyBlue = new Color(135 / 255f, 206 / 255f, 235 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #6A5ACD.
+        /// </summary>
+        public static readonly Color SlateBlue = new Color(106 / 255f, 90 / 255f, 205 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #708090.
+        /// </summary>
+        public static readonly Color SlateGray = new Color(112 / 255f, 128 / 255f, 144 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFFAFA.
+        /// </summary>
+        public static readonly Color Snow = new Color(1, 250 / 255f, 250 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #00FF7F.
+        /// </summary>
+        public static readonly Color SpringGreen = new Color(0, 1, 127 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #4682B4.
+        /// </summary>
+        public static readonly Color SteelBlue = new Color(70 / 255f, 130 / 255f, 180 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #D2B48C.
+        /// </summary>
+        public static readonly Color Tan = new Color(210 / 255f, 180 / 255f, 140 / 255f);
+
         /// <summary>
         /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #008080.
         /// </summary>
         public static readonly Color Teal = new Color(0, 128 / 255f, 128 / 255f);
 
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #D8BFD8.
+        /// </summary>
+        public static readonly Color Thistle = new Color(216 / 255f, 191 / 255f, 216 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FF6347.
+        /// </summary>
+        public static readonly Color Tomato = new Color(1, 99 / 255f, 71 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #40E0D0.
+        /// </summary>
+        public static readonly Color Turquoise = new Color(64 / 255f, 224 / 255f, 208 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #EE82EE.
+        /// </summary>
+        public static readonly Color Violet = new Color(238 / 255f, 130 / 255f, 238 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #F5DEB3.
+        /// </summary>
+        public static readonly Color Wheat = new Color(245 / 255f, 222 / 255f, 179 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFFFFF.
+        /// </summary>
+        public static readonly Color White = new Color(1, 1, 1);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #F5F5F5.
+        /// </summary>
+        public static readonly Color WhiteSmoke = new Color(245 / 255f, 245 / 255f, 245 / 255f);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #FFFF00.
+        /// </summary>
+        public static readonly Color Yellow = new Color(1, 1, 0);
+
+        /// <summary>
+        /// Represents a <see cref="Color"/> matching the W3C definition that has an hex value of #9ACD32.
+        /// </summary>
+        public static readonly Color YellowGreen = new Color(154 / 255f, 205 / 255f, 50 / 255f);
     }
 }

src/ImageProcessor/Common/Helpers/ImageMaths.cs

@@ -240,6 +240,8 @@ namespace ImageProcessor
                     {
                         if (delegateFunc(imageBase, x, y, componentValue))
                         {
+                            var c = imageBase[x, y];
+
                             return y;
                         }
                     }

src/ImageProcessor/Filters/Binarization/Threshold.cs

@@ -10,8 +10,8 @@ namespace ImageProcessor.Filters
 
     /// <summary>
     /// An <see cref="IImageProcessor"/> to perform binary threshold filtering against an 
-    /// <see cref="Image"/>. The mage will be converted to greyscale before thresholding 
-    /// occurrs.
+    /// <see cref="Image"/>. The image will be converted to greyscale before thresholding 
+    /// occurs.
     /// </summary>
     public class Threshold : ParallelImageProcessor
     {

src/ImageProcessor/Filters/ImageFilterExtensions.cs

@@ -301,6 +301,31 @@ namespace ImageProcessor.Filters
             return source.Process(rectangle, new Polaroid());
         }
 
+        /// <summary>
+        /// Pixelates and image with the given pixel size.
+        /// </summary>
+        /// <param name="source">The image this method extends.</param>
+        /// <param name="size">The size of the pixels.</param>
+        /// <returns>The <see cref="Image"/>.</returns>
+        public static Image Pixelate(this Image source, int size = 4)
+        {
+            return source.Process(source.Bounds, new Pixelate(size));
+        }
+
+        /// <summary>
+        /// Pixelates and image with the given pixel size.
+        /// </summary>
+        /// <param name="source">The image this method extends.</param>
+        /// <param name="size">The size of the pixels.</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"/>.</returns>
+        public static Image Pixelate(this Image source, int size, Rectangle rectangle)
+        {
+            return source.Process(rectangle, new Pixelate(size));
+        }
+
         /// <summary>
         /// Alters the saturation component of the image.
         /// </summary>

src/ImageProcessor/Filters/Invert.cs

@@ -29,7 +29,6 @@ namespace ImageProcessor.Filters
                         {
                             for (int x = startX; x < endX; x++)
                             {
-                                // TODO: This doesn't work for gamma test images.
                                 Color color = source[x, y];
                                 color.R = 1 - color.R;
                                 color.G = 1 - color.G;

src/ImageProcessor/Filters/Pixelate.cs

@@ -0,0 +1,92 @@
+// <copyright file="Invert.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageProcessor.Filters
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Threading.Tasks;
+
+    /// <summary>
+    /// An <see cref="IImageProcessor"/> to invert the colors of an <see cref="Image"/>.
+    /// </summary>
+    public class Pixelate : ParallelImageProcessor
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Pixelate"/> class.
+        /// </summary>
+        /// <param name="size">The size of the pixels. Must be greater than 0.</param>
+        /// <exception cref="ArgumentException">
+        /// <paramref name="size"/> is less than 0 or equal to 0.
+        /// </exception>
+        public Pixelate(int size)
+        {
+            Guard.MustBeGreaterThan(size, 0, nameof(size));
+            this.Value = size;
+        }
+
+        /// <inheritdoc/>
+        public override int Parallelism { get; set; } = 1;
+
+        /// <summary>
+        /// Gets or the pixel size.
+        /// </summary>
+        public int Value { get; }
+
+        /// <inheritdoc/>
+        protected override void Apply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle, int startY, int endY)
+        {
+            int sourceY = sourceRectangle.Y;
+            int sourceBottom = sourceRectangle.Bottom;
+            int startX = sourceRectangle.X;
+            int endX = sourceRectangle.Right;
+            int size = this.Value;
+            int offset = this.Value / 2;
+
+            // Get the range on the y-plane to choose from.
+            IEnumerable<int> range = EnumerableExtensions.SteppedRange(startY, i => i < endY, size);
+
+            Parallel.ForEach(
+                range,
+                y =>
+                {
+                    if (y >= sourceY && y < sourceBottom)
+                    {
+                        for (int x = startX; x < endX; x += size)
+                        {
+
+                            int offsetX = offset;
+                            int offsetY = offset;
+
+                            // Make sure that the offset is within the boundary of the 
+                            // image.
+                            while (y + offsetY >= sourceBottom)
+                            {
+                                offsetY--;
+                            }
+
+                            while (x + offsetX >= endX)
+                            {
+                                offsetX--;
+                            }
+
+                            // Get the pixel color in the centre of the soon to be pixelated area.
+                            // ReSharper disable AccessToDisposedClosure
+                            Color pixel = source[x + offsetX, y + offsetY];
+
+                            // For each pixel in the pixelate size, set it to the centre color.
+                            for (int l = y; l < y + size && l < sourceBottom; l++)
+                            {
+                                for (int k = x; k < x + size && k < endX; k++)
+                                {
+                                    target[k, l] = pixel;
+                                }
+                            }
+                        }
+                    }
+                });
+        }
+    }
+}

src/ImageProcessor/Samplers/EntropyCrop.cs

@@ -16,6 +16,8 @@ namespace ImageProcessor.Samplers
     /// </summary>
     public class EntropyCrop : ParallelImageProcessor
     {
+        private Rectangle cropRectangle;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="EntropyCrop"/> class.
         /// </summary>
@@ -39,37 +41,36 @@ namespace ImageProcessor.Samplers
         {
             ImageBase temp = new Image(source.Width, source.Height);
 
-            // TODO: Should we detect edges on a grayscale image? 
-            new Sobel() { Greyscale = true }.Apply(temp, source, sourceRectangle);
+            // Detect the edges.
+            new Sobel().Apply(temp, source, sourceRectangle);
 
             // Apply threshold binarization filter.
             new Threshold(.5f).Apply(temp, temp, sourceRectangle);
 
             // Search for the first white pixels
             Rectangle rectangle = ImageMaths.GetFilteredBoundingRectangle(temp, 0);
-            target.SetPixels(rectangle.Width, rectangle.Height, new float[rectangle.Width * rectangle.Height * 4]);
 
+            // Reset the target pixel to the correct size.
+            target.SetPixels(rectangle.Width, rectangle.Height, new float[rectangle.Width * rectangle.Height * 4]);
+            this.cropRectangle = rectangle;
         }
 
         /// <inheritdoc/>
         protected override void Apply(ImageBase target, ImageBase source, Rectangle targetRectangle, Rectangle sourceRectangle, int startY, int endY)
         {
-            int targetY = targetRectangle.Y;
-            int targetBottom = targetRectangle.Height;
+            int targetY = this.cropRectangle.Y;
             int startX = targetRectangle.X;
-            int endX = targetRectangle.Width;
+            int targetX = this.cropRectangle.X;
+            int endX = this.cropRectangle.Width;
 
             Parallel.For(
             startY,
             endY,
             y =>
             {
-                if (y >= targetY && y < targetBottom)
+                for (int x = startX; x < endX; x++)
                 {
-                    for (int x = startX; x < endX; x++)
-                    {
-                        target[x, y] = source[x, y];
-                    }
+                    target[x, y] = source[x + targetX, y + targetY];
                 }
             });
         }

tests/ImageProcessor.Tests/Processors/Filters/FilterTests.cs

@@ -38,7 +38,8 @@ namespace ImageProcessor.Tests
             //{ "Prewitt", new Prewitt() },
             //{ "RobertsCross", new RobertsCross() },
             //{ "Scharr", new Scharr() },
-            { "Sobel", new Sobel {Greyscale = true} },
+            //{ "Sobel", new Sobel {Greyscale = true} },
+            { "Pixelate", new Pixelate(8)  },
             //{ "GuassianBlur", new GuassianBlur(10) },
             //{ "GuassianSharpen", new GuassianSharpen(10) }
         };

tests/ImageProcessor.Tests/Processors/ProcessorTestBase.cs

@@ -20,7 +20,7 @@ namespace ImageProcessor.Tests
         public static readonly List<string> Files = new List<string>
         {
             //"TestImages/Formats/Jpg/Backdrop.jpg",
-            //"TestImages/Formats/Jpg/Calliphora.jpg",
+            "TestImages/Formats/Jpg/Calliphora.jpg",
             //"TestImages/Formats/Jpg/china.jpg",
             //"TestImages/Formats/Jpg/ant.jpg",
             //"TestImages/Formats/Jpg/parachute.jpg",

tests/ImageProcessor.Tests/Processors/Samplers/SamplerTests.cs

@@ -59,9 +59,9 @@ namespace ImageProcessor.Tests
         [Fact]
         public void ImageShouldEntropyCrop()
         {
-            if (!Directory.Exists("TestOutput/EntropyCropped"))
+            if (!Directory.Exists("TestOutput/EntropyCrop"))
             {
-                Directory.CreateDirectory("TestOutput/EntropyCropped");
+                Directory.CreateDirectory("TestOutput/EntropyCrop");
             }
 
             foreach (string file in Files)
@@ -69,8 +69,8 @@ namespace ImageProcessor.Tests
                 using (FileStream stream = File.OpenRead(file))
                 {
                     Image image = new Image(stream);
-                    string filename = Path.GetFileNameWithoutExtension(file) + "-EntropyCropped" + Path.GetExtension(file);
-                    using (FileStream output = File.OpenWrite($"TestOutput/EntropyCropped/{filename}"))
+                    string filename = Path.GetFileNameWithoutExtension(file) + "-EntropyCrop" + Path.GetExtension(file);
+                    using (FileStream output = File.OpenWrite($"TestOutput/EntropyCrop/{filename}"))
                     {
                         image.EntropyCrop().Save(output);
                     }