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I have two pictures:

(1) a pic of sky with clouds (2) a pic of some patterns

I like to use (1) as basis, but want to fill clouds with the pattern in (2). How may I do this? I use Photoshop on windows.

If the color and boundary of clouds are easily distinguishable from the sky, it might be easy. But when such a distinction is not obvious, I got a problem. How may I solve this problem?

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migrated from photo.stackexchange.com May 23 '11 at 4:21

This question came from our site for professional, enthusiast and amateur photographers.

5  
This falls more into the photoshop bucket than photography bucket. We try to avoid questions that have to do with image editing techniques, as we are primarily a photography and photographic editing site (photo editing being fixing up things like tone curve, white balance, exposure, red-eye, etc.) General image editing questions are probably better asked on SuperUser.com. – jrista Nov 4 '10 at 0:07

You could apply a similar principle as would be used when trying to make a bottle transparent and make the clouds in your image appear transparent -- you could then add your pattern behind so they'd show through.

In addition to the techniques on that link, you could create a blending mask based on the brightness of your base image.

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