The Acrobat menu has options for extracting pages from a PDF. However, with the page thumbnails visible, the fastest way to extract pages is to simply select the relevant pages and drag them to...
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Using channels in Photoshop to extract transparent smoke
While blend modes and masking are excellent compositing options, there are times when the luminance information needs to be extracted from an image. This can often best be done via channels as opposed to...
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