How to use colormatrix only on a part of Image

[qauaan]

ColrMatrix is fast way to change the image. but the color matrix apply on whole image.
is there any way to apply color matrix only a part of image rather than whole image??

[kvprajapati]

Here is a link - http://www.codeproject.com/KB/GDI-plus/colormatrix.aspx

[qauaan]

Here is a link - http://www.codeproject.com/KB/GDI-plus/colormatrix.aspx

Thanks for reply. sir problem is that this tutorial apply the colormatrix on whole image but i want to use the colormatrix only a part of image not the whole image.

[ddanbe]

Perhaps cropping your image might help http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.croppedbitmap.aspx