This is one of over 5964 effects generated by Filter Forge, a Photoshop plugin that allows you to create your own filters.
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To open this filter, you must have Filter Forge 3.0 or higher installed on your computer. If you don't have it installed yet, click here to download Filter Forge
Extracts the transparency component from a grayscale image by assuming that there is a solid background color overlayed with another solid color, only differing in opacity acrosss the image.
transparency, grayscale, extract
This filter has earned its author one of our rewards. They are given to the authors of popular filters and include a free copy of Filter Forge.