Changing Colors of an Image

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Okay! I almost done all the kinds of searching anywhere and I ended up asking it here.

I only have just one 1 question.

Let just say I have a picturebox that contains an image of a Hair(Curly Hair) with a white background and 3 Buttons (Red,Green and Blue). If I press the Red Button the Hair inside the picturebox will change to red (Do not include the white BG).

How can i create a code of it? Can i have an Example? TY in advance :D

Posted 16-Dec-13 7:42am

Crixalis Paul

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Dave Kreskowiak · Answer 1 · 2013-12-16T08:40:00

Solution 1

Search the articles here for "Image processing for dummies" and you'll come up with the basic tools you need to pull this little project off.

Posted 16-Dec-13 8:40am

Dave Kreskowiak

idle63 · Answer 2 · 2013-12-16T08:45:00

It sounds like this is homework. But why not help also a little bit on this.

RGB is a color space (not well defined expect you refer sRGB and unfortunately also sRGB meanwhile is not longer defined in a unique way). For now you can forget the remark in the last bracket.

R= G= B= 0 means black.
R= G= B= 255 means white.

In case you are really in the lucky position that your background is exactly “RGB-white” you need only to set each point where R < 255 && G < 255 && G < 255 to the color the user choose. This assumes of course that you know how to access each pixel of the pic.

But please be aware that the white background is maybe not that perfect. Then it is better to replace the 255 mentioned above by a selectable limit.

And by the way, each pixel of the curly hairs which is white, remain “white” in this easy solution.