/// <summary>
/// Colorizing the Intensity Mask
/// Create a color map that tells the GDI rendering method how it should draw the colors.
/// What we're actually doing here is creating a table that specifies a new color for each shade of gray
/// (all 256) of them. The easiest way to do this is to create a palette image that's
/// 256 pixels wide by 1 pixel high.
/// That means that we can directly map each pixel in the palette image to a shade of gray.
/// </summary>
/// <param name="mask">Gray shaded image to be colorized</param>
/// <param name="alpha">0-255</param>
/// <param name="type">ColorPaletteType (Photosounder, Rew or Sox)</param>
/// <returns>a colorized bitmap</returns>
public static Bitmap Colorize(Image mask, byte alpha, ColorPaletteType type)
{
// Create new bitmap to act as a work surface for the colorization process
var output = new Bitmap(mask.Width, mask.Height, PixelFormat.Format32bppArgb);
// Create a graphics object from our memory bitmap so we can draw on it and clear it's drawing surface
Graphics surface = Graphics.FromImage(output);
surface.Clear(Color.Transparent);
// Build an array of color mappings to remap our greyscale mask to full color
// Accept an alpha byte to specify the transparancy of the output image
ColorMap[] colors = CreatePaletteIndex(alpha, type);
// Create new image attributes class to handle the color remappings
// Inject our color map array to instruct the image attributes class how to do the colorization
var remapper = new ImageAttributes();
remapper.SetRemapTable(colors);
// Draw our mask onto our memory bitmap work surface using the new color mapping scheme
surface.DrawImage(mask, new Rectangle(0, 0, mask.Width, mask.Height), 0, 0, mask.Width, mask.Height, GraphicsUnit.Pixel, remapper);
// Send back newly colorized memory bitmap
return(output);
}
/// <summary>
/// Return a list of gradients based on the REW color palette
/// </summary>
/// <param name="steps">number of gradients (colors) to create</param>
/// <param name="type">ColorPaletteType (Photosounder, Rew or Sox)</param>
/// <returns>a list of gradients</returns>
public static List <Color> GetHSLColorGradients(int steps, ColorPaletteType type)
{
var colors = new List <IColor>();
switch (type)
{
case ColorPaletteType.REW:
// create REW gradient
colors.Add(HSLColor.FromRGB(Color.Red));
colors.Add(HSLColor.FromRGB(Color.Yellow));
colors.Add(HSLColor.FromRGB(Color.FromArgb(2, 178, 0))); // green
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 176, 178))); // light blue
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 0, 177))); // blue
colors.Add(HSLColor.FromRGB(Color.FromArgb(61, 0, 124))); // purple
break;
case ColorPaletteType.SOX:
// create SOX gradient
colors.Add(HSLColor.FromRGB(Color.FromArgb(255, 255, 254))); // white
colors.Add(HSLColor.FromRGB(Color.FromArgb(255, 235, 60)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(252, 86, 0)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(210, 0, 64)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(131, 0, 125)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(25, 0, 98)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 0, 0))); // black
break;
case ColorPaletteType.PHOTOSOUNDER:
// create Photosounder gradient
colors.Add(HSLColor.FromRGB(Color.FromArgb(255, 255, 254))); // white
colors.Add(HSLColor.FromRGB(Color.FromArgb(249, 247, 78))); //
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 0, 100))); // blue
break;
case ColorPaletteType.MATLAB:
// create Matlab / Octave gradient (jet(64))
colors.Add(HSLColor.FromRGB(Color.FromArgb(127, 0, 0)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(255, 2, 0)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(255, 131, 0)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(249, 255, 6)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(119, 255, 135)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 244, 255)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 115, 255)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 0, 240)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 0, 127)));
break;
case ColorPaletteType.BLACK_AND_WHITE:
default:
// create black and white gradient
colors.Add(HSLColor.FromRGB(Color.White));
colors.Add(HSLColor.FromRGB(Color.Black));
break;
}
List <Color> gradients = ColorUtils.HslLinearInterpolate(steps, colors);
return(gradients);
}
/// <summary>
/// Return a list of gradients based on the REW color palette
/// </summary>
/// <param name="steps">number of gradients (colors) to create</param>
/// <param name="type">ColorPaletteType (Photosounder, Rew or Sox)</param>
/// <returns>a list of gradients</returns>
public static List <Color> GetRGBColorGradients(int steps, ColorPaletteType type)
{
var colors = new List <Color>();
switch (type)
{
case ColorPaletteType.REW:
// create REW gradient
colors.Add(Color.Red);
colors.Add(Color.Yellow);
colors.Add(Color.FromArgb(2, 178, 0)); // green
colors.Add(Color.FromArgb(0, 176, 178)); // light blue
colors.Add(Color.FromArgb(0, 0, 177)); // blue
colors.Add(Color.FromArgb(61, 0, 124)); // purple
break;
case ColorPaletteType.SOX:
// create SOX gradient
colors.Add(Color.FromArgb(255, 255, 254)); // white
colors.Add(Color.FromArgb(255, 235, 60));
colors.Add(Color.FromArgb(252, 86, 0));
colors.Add(Color.FromArgb(210, 0, 64));
colors.Add(Color.FromArgb(131, 0, 125));
colors.Add(Color.FromArgb(25, 0, 98));
colors.Add(Color.FromArgb(0, 0, 0)); // black
break;
case ColorPaletteType.PHOTOSOUNDER:
// create Photosounder gradient
colors.Add(Color.FromArgb(255, 255, 255)); // white
colors.Add(Color.FromArgb(255, 255, 112)); // skin color
colors.Add(Color.FromArgb(63, 120, 190)); //
colors.Add(Color.FromArgb(16, 70, 180)); //
colors.Add(Color.FromArgb(14, 55, 170)); //
colors.Add(Color.FromArgb(12, 30, 155)); //
colors.Add(Color.FromArgb(12, 30, 130)); //
colors.Add(Color.FromArgb(10, 22, 110)); //
colors.Add(Color.FromArgb(10, 21, 106)); //
colors.Add(Color.FromArgb(10, 21, 104)); //
colors.Add(Color.FromArgb(10, 21, 100)); // dark blue
break;
case ColorPaletteType.BLACK_AND_WHITE:
default:
// create black and white gradient
colors.Add(Color.White);
colors.Add(Color.Black);
break;
}
List <Color> gradients = ColorUtils.RgbLinearInterpolate(steps, colors);
return(gradients);
}
/// <summary>
/// Build an array of color mappings to remap our greyscale mask to full color
/// Accept an alpha byte to specify the transparancy of the output image
/// </summary>
/// <param name="alpha">specify the transparancy of the output image</param>
/// <param name="type">ColorPaletteType (Photosounder, Rew or Sox)</param>
/// <returns>a ColorMap array</returns>
private static ColorMap[] CreatePaletteIndex(byte alpha, ColorPaletteType type)
{
ColorMap[] outputMap = new ColorMap[256];
// Change this path to wherever you saved the palette image.
//Bitmap palette = (Bitmap)Bitmap.FromFile(@"C:\Users\Dylan\Documents\Visual Studio 2005\Projects\HeatMapTest\palette.bmp");
List <Color> gradients;
switch (type)
{
case ColorPaletteType.PHOTOSOUNDER:
gradients = ColorUtils.GetRGBColorGradients(256, ColorUtils.ColorPaletteType.PHOTOSOUNDER);
break;
case ColorPaletteType.REW:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.REW);
break;
case ColorPaletteType.SOX:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.SOX);
break;
case ColorPaletteType.MATLAB:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.MATLAB);
break;
default:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.SOX);
break;
}
Bitmap palette = GetColorGradientsPalette(gradients, 1);
// Loop through each pixel and create a new color mapping
for (int x = 0; x <= 255; x++)
{
outputMap[x] = new ColorMap();
outputMap[x].OldColor = Color.FromArgb(x, x, x);
outputMap[x].NewColor = Color.FromArgb(alpha, palette.GetPixel(255 - x, 0));
}
return(outputMap);
}
/// <summary>
/// Build an array of color mappings to remap our greyscale mask to full color
/// Accept an alpha byte to specify the transparancy of the output image
/// </summary>
/// <param name="alpha">specify the transparancy of the output image</param>
/// <param name="type">ColorPaletteType (Photosounder, Rew or Sox)</param>
/// <returns>a ColorMap array</returns>
private static ColorMap[] CreatePaletteIndex(byte alpha, ColorPaletteType type)
{
var outputMap = new ColorMap[256];
List <Color> gradients;
switch (type)
{
case ColorPaletteType.PHOTOSOUNDER:
gradients = ColorUtils.GetRGBColorGradients(256, ColorUtils.ColorPaletteType.PHOTOSOUNDER);
break;
case ColorPaletteType.REW:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.REW);
break;
case ColorPaletteType.SOX:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.SOX);
break;
case ColorPaletteType.MATLAB:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.MATLAB);
break;
default:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.SOX);
break;
}
Bitmap palette = GetColorGradientsPalette(gradients, 1);
// Loop through each pixel and create a new color mapping
for (int x = 0; x <= 255; x++)
{
outputMap[x] = new ColorMap();
outputMap[x].OldColor = Color.FromArgb(x, x, x);
outputMap[x].NewColor = Color.FromArgb(alpha, palette.GetPixel(255 - x, 0));
}
return(outputMap);
}
/// <summary>
/// Build an array of color mappings to remap our greyscale mask to full color
/// Accept an alpha byte to specify the transparancy of the output image
/// </summary>
/// <param name="alpha">specify the transparancy of the output image</param>
/// <param name="type">ColorPaletteType (Photosounder, Rew or Sox)</param>
/// <returns>a ColorMap array</returns>
private static ColorMap[] CreatePaletteIndex(byte alpha, ColorPaletteType type)
{
ColorMap[] outputMap = new ColorMap[256];
// Change this path to wherever you saved the palette image.
//Bitmap palette = (Bitmap)Bitmap.FromFile(@"C:\Users\Dylan\Documents\Visual Studio 2005\Projects\HeatMapTest\palette.bmp");
List<Color> gradients;
switch (type) {
case ColorPaletteType.PHOTOSOUNDER:
gradients = ColorUtils.GetRGBColorGradients(256, ColorUtils.ColorPaletteType.PHOTOSOUNDER);
break;
case ColorPaletteType.REW:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.REW);
break;
case ColorPaletteType.SOX:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.SOX);
break;
case ColorPaletteType.MATLAB:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.MATLAB);
break;
default:
gradients = ColorUtils.GetHSBColorGradients(256, ColorUtils.ColorPaletteType.SOX);
break;
}
Bitmap palette = GetColorGradientsPalette(gradients, 1);
// Loop through each pixel and create a new color mapping
for (int x = 0; x <= 255; x++)
{
outputMap[x] = new ColorMap();
outputMap[x].OldColor = Color.FromArgb(x, x, x);
outputMap[x].NewColor = Color.FromArgb(alpha, palette.GetPixel(255-x, 0));
}
return outputMap;
}
/// <summary>
/// Return a list of gradients based on the REW color palette
/// </summary>
/// <param name="steps">number of gradients (colors) to create</param>
/// <returns>a list of gradients</returns>
public static List<Color> GetRGBColorGradients(int steps, ColorPaletteType type)
{
List<Color> colors = new List<Color>();
switch (type) {
case ColorPaletteType.REW:
// create REW gradient
colors.Add(Color.Red);
colors.Add(Color.Yellow);
colors.Add(Color.FromArgb(2, 178, 0)); // green
colors.Add(Color.FromArgb(0, 176, 178)); // light blue
colors.Add(Color.FromArgb(0, 0, 177)); // blue
colors.Add(Color.FromArgb(61, 0, 124)); // purple
break;
case ColorPaletteType.SOX:
// create SOX gradient
colors.Add(Color.FromArgb(255,255,254)); // white
colors.Add(Color.FromArgb(255,235,60));
colors.Add(Color.FromArgb(252,86,0));
colors.Add(Color.FromArgb(210,0,64));
colors.Add(Color.FromArgb(131,0,125));
colors.Add(Color.FromArgb(25,0,98));
colors.Add(Color.FromArgb(0,0,0)); // black
break;
case ColorPaletteType.PHOTOSOUNDER:
// create Photosounder gradient
colors.Add(Color.FromArgb(255, 255, 255)); // white
colors.Add(Color.FromArgb(255, 255, 112)); // skin color
colors.Add(Color.FromArgb(63, 120, 190)); //
colors.Add(Color.FromArgb(16, 70, 180)); //
colors.Add(Color.FromArgb(14, 55, 170)); //
colors.Add(Color.FromArgb(12, 30, 155)); //
colors.Add(Color.FromArgb(12, 30, 130)); //
colors.Add(Color.FromArgb(10, 22, 110)); //
colors.Add(Color.FromArgb(10, 21, 106)); //
colors.Add(Color.FromArgb(10, 21, 104)); //
colors.Add(Color.FromArgb(10, 21, 100)); // dark blue
break;
case ColorPaletteType.BLACK_AND_WHITE:
default:
// create black and white gradient
colors.Add(Color.White);
colors.Add(Color.Black);
break;
}
List<Color> gradients = ColorUtils.RgbLinearInterpolate(steps, colors);
return gradients;
}
/// <summary>
/// Return a list of gradients based on the REW color palette
/// </summary>
/// <param name="steps">number of gradients (colors) to create</param>
/// <returns>a list of gradients</returns>
public static List<Color> GetHSLColorGradients(int steps, ColorPaletteType type)
{
List<IColor> colors = new List<IColor>();
switch (type) {
case ColorPaletteType.REW:
// create REW gradient
colors.Add(HSLColor.FromRGB(Color.Red));
colors.Add(HSLColor.FromRGB(Color.Yellow));
colors.Add(HSLColor.FromRGB(Color.FromArgb(2, 178, 0))); // green
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 176, 178))); // light blue
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 0, 177))); // blue
colors.Add(HSLColor.FromRGB(Color.FromArgb(61, 0, 124))); // purple
break;
case ColorPaletteType.SOX:
// create SOX gradient
colors.Add(HSLColor.FromRGB(Color.FromArgb(255,255,254))); // white
colors.Add(HSLColor.FromRGB(Color.FromArgb(255,235,60)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(252,86,0)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(210,0,64)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(131,0,125)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(25,0,98)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(0,0,0))); // black
break;
case ColorPaletteType.PHOTOSOUNDER:
// create Photosounder gradient
colors.Add(HSLColor.FromRGB(Color.FromArgb(255, 255, 254))); // white
colors.Add(HSLColor.FromRGB(Color.FromArgb(249, 247, 78))); //
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 0, 100))); // blue
break;
case ColorPaletteType.MATLAB:
// create Matlab / Octave gradient (jet(64))
colors.Add(HSLColor.FromRGB(Color.FromArgb(127, 0, 0)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(255, 2, 0)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(255, 131, 0)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(249, 255, 6)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(119, 255, 135)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 244, 255)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 115, 255)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 0, 240)));
colors.Add(HSLColor.FromRGB(Color.FromArgb(0, 0, 127)));
break;
case ColorPaletteType.BLACK_AND_WHITE:
default:
// create black and white gradient
colors.Add(HSLColor.FromRGB(Color.White));
colors.Add(HSLColor.FromRGB(Color.Black));
break;
}
List<Color> gradients = ColorUtils.HslLinearInterpolate(steps, colors);
return gradients;
}
/// <summary>
/// Colorizing the Intensity Mask
/// Create a color map that tells the GDI rendering method how it should draw the colors.
/// What we're actually doing here is creating a table that specifies a new color for each shade of gray
/// (all 256) of them. The easiest way to do this is to create a palette image that's
/// 256 pixels wide by 1 pixel high.
/// That means that we can directly map each pixel in the palette image to a shade of gray.
/// </summary>
/// <param name="mask">Gray shaded image to be colorized</param>
/// <param name="alpha">0-255</param>
/// <returns>a colorized bitmap</returns>
public static Bitmap Colorize(Image mask, byte alpha, ColorPaletteType type)
{
// Create new bitmap to act as a work surface for the colorization process
Bitmap output = new Bitmap(mask.Width, mask.Height, PixelFormat.Format32bppArgb);
// Create a graphics object from our memory bitmap so we can draw on it and clear it's drawing surface
Graphics surface = Graphics.FromImage(output);
surface.Clear(Color.Transparent);
// Build an array of color mappings to remap our greyscale mask to full color
// Accept an alpha byte to specify the transparancy of the output image
ColorMap[] colors = CreatePaletteIndex(alpha, type);
// Create new image attributes class to handle the color remappings
// Inject our color map array to instruct the image attributes class how to do the colorization
ImageAttributes remapper = new ImageAttributes();
remapper.SetRemapTable(colors);
// Draw our mask onto our memory bitmap work surface using the new color mapping scheme
surface.DrawImage(mask, new Rectangle(0, 0, mask.Width, mask.Height), 0, 0, mask.Width, mask.Height, GraphicsUnit.Pixel, remapper);
// Send back newly colorized memory bitmap
return output;
}
private void ColorPaletteTypeComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
colorPaletteType = (ColorPaletteType)ColorPaletteTypeComboBox.SelectedItem;
Refresh();
}
