I'm trying to blur an image in my picturebox.
I can't find anything on this forum what I need and nothing on google.

I was thinking,
If I have a black&White Image,
all I have to do is look for a black pixel and copy the pixel with more brightness on several target locations around the found pixel, right?

On colored pictures the same.

But If the copied pixel falls on another pixel, I think I have to weigh the colors and choose the one between them, to be the target color.

I've tried something out, but my coding is to slow anyway.

If anyone has a blur code, please tell me
and otherwise give me some hints to do it.

For example, I don't know how to brighten a color.