I had to get pixel-by-pixel RGB for one of my WT columns using Image::Magick. You can add a RGB-to-gray step in there and get just luminance that way. And Image::Magick reads any image format known to man or beast.

-- Randal L. Schwartz, Perl hacker

In reply to Re: Pixel by pixel reading of images by merlyn
in thread Pixel by pixel reading of images by dmckee

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