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Greying out a color image

Mar 22, 2012, 02:33
Post: #1
Greying out a color image
I have a jpg image of a face/neck/shoulders of a person, in color.
I'd like to grey-out just the person and leave the background white (like it is currently).
Can you guide me on how to accomplish that?

Thanks
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Mar 22, 2012, 07:37
Post: #2
RE: Greying out a color image
If the background is truly white, then changing the image to monochrome is going to leave it white...

Otherwise the general technique for this is to duplicate the color layer, change one of the layers to B&W (Colors/Desaturate, or Channel mixer for a better result), make sure the top layer can be transparent ("Layer/Transparency/Add alpha channel"), and then erase bits of the top layer to see the other one through. Using "layer masks" instead of the eraser look a bot more complicated but is actually faster (errors are much easier to correct). Google for "layer mask" to find countless tutorials on the subject.

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