Asp.net (C #)-convert a color image to a black/white image
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/// Convert a color image to a black or white image
/// <Param name = "Source"> </param>
/// <Returns> </returns>
Public static bitmap converttograyscale (Bitmap bitmap)
Bitmap Bm = new Bitmap (bitmap. Width, bitmap. Height );
For (INT y = 0; y <BM. height; y ++)
For (INT x = 0; x <BM. width; X ++)
Color c = bitmap. getpixel (x, y );
Int RGB = (INT) (c.r * 0.3 + c.g * 0.59 + c. B * 0.11 );
BM. setpixel (X, Y, color. fromargb (RGB, RGB, RGB ));
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