I have a C# program that works correctly on xp and vista but it needs to be used on windows 7, I have not been able to come up with a solution, it appears that getpixels just doesn't work right on windows 7.

I am getting one of the RGB values because I am dealing with tiff grayscale images.

 System.Drawing.Bitmap image;// this is in a separate class

 image = new Bitmap(destination);// this is in the constructor 

 Color t = image.GetPixel(j, i); // this is in a separate function
 int s = t.R 

when I print s, for example, image(0,0), it is supposed to be 220, it will be 221

I am doing edge detection on an image and I have to go through the image pixel by pixel, I have run the exact same program on XP,Vista,windows7 and windows 7 got different values.

It wouldn't let me post images at all and only one link.

The first image is the original image, the second is the correct image, also the one I get with XP and Vista, the final image is the image when running the same program in Windows 7. There is not much of a visible difference but it matters for what I am doing.

Thanks for the help, it seems that I am having a hard time explaining my problem.