Extracts specified normalized RGB channel of color image and returns it as grayscale image.

Note:Normalized RGB color space is defined as:

Copy 

r = R / (R + G + B ),
g = G / (R + G + B ),
b = B / (R + G + B ),

where R, G and B are components of RGB color space and r, g and b are components of normalized RGB color space.

The filter accepts 24, 32, 48 and 64 bpp color images and produces 8 (if source is 24 or 32 bpp image) or 16 (if source is 48 or 64 bpp image) bpp grayscale image.

Sample usage:

CopyC#

// create filter
ExtractNormalizedRGBChannel filter = new ExtractNormalizedRGBChannel( RGB.G );
// apply the filter
Bitmap channelImage = filter.Apply( image );