Comments by asugix (Top 5 by date)

if I save the image just like the code #1. It's okay. But when using code #2 it have error.
I think the problem because I'm returning Bitmap object from TransformImage(Bitmap originalImage) and then excute Bitmap.Save

that is what I want to know why.

I'm not putting try catch. Instead I'm put breakpoint on "Bitmap originalBitmap = new Bitmap(imagePath, true);", then step through the code.

everything is okay before targetBitmap.Save. After executing that line, it says "GDI error". When I check on the targetBitmap properties, almost all of them throwing exceptions

the error is thrown on function : ColorizeImage on code : targetBitmap.Save
When I check using pop-up-debugger view, many properties on targetBitmap throwing exceptions just after that code.

I've check the color matrix, and it's okay. (it is bob powell's grayscale matrix). I've set breakpoint and step through the code. The error is thrown after targetBitmap.save....