Extract RGB channel from image.
Extracts specified channel of color image and returns it as grayscale image.
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:
// create filter ExtractChannel filter = new ExtractChannel( RGB.G ); // apply the filter Bitmap channelImage = filter.Apply( image ); Initial image:
Result image:
private void SetFilter()
{
ImageType = ImageTypes.Rgb32bpp;
if ((int)mode > 3)
{
Af.YCbCrExtractChannel newFilter = new Af.YCbCrExtractChannel();
newFilter.Channel = (short)(mode - 4);
imageFilter = newFilter;
}
else
{
Af.ExtractChannel newFilter = new Af.ExtractChannel();
newFilter.Channel = (short)mode;
imageFilter = newFilter;
}
}
