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Sobel operator help

I am doing a project on image processing in c#.
to perform the sobel operator i want to use lock bit method. but the probelm i face is here how i increment and decrement the pixels values in this case.
it is very easy to do it using Getpixel method but i couldn't find a way for it in lock method........
waiting for sumone who can help me.
thanking in advance
Mar 26 '07 #1
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