15 July 2015

Selecting Pixels by Brightness

Just ran into that time again when I want to preserve the shadows in a nicely backgrounded image. I usually end up saying, "screw it," and mask out the object and add in a fake background. Blah.

To select pixels based on their "brightness" (luminosity), ctrl-click the RGB channel.

To keep the shadows, invert the selection, and combine it with a masked layer of the object in question.

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