Re: How to get the alpha channel data information?

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From: Michael_L_Hale
Date: Mon, 16 Mar 2009 19:13

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All channels contain data. You can tell if an alpha channel is black, white, or greyscale by the histogram.

For example if activeDocument.channels.getByName('myAlpha').histogram[0] == the number of pixels in the doc the alpha is all black. use histogram[255] to test for white.

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Subject: Re: How to get the alpha channel data information?
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Date: Mon, 16 Mar 2009 12:13:28 -0700
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