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On March 1, 2021 12:50:35 PM GMT+01:00, Wols Lists <antlists@××××××××××××.uk> wrote: |
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>I've got a bunch of scans, let's assume they're text documents. And |
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>they're rather big ... I want to email them. |
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> |
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>How on earth do I convert them to TRUE b&w documents? At the moment they |
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>are jpegs that weigh in at 3MB, and I guess they're using about 5 bytes |
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>to store all the colour, luminance, whatever, per pixel. But actually, |
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>there's only ONE BIT of information there - whether that pixel is black |
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>or white. |
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> |
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>I'm using imagemagick, but so far all my attempts to strip out the |
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>surplus information have resulted in INcreasing the file size ??? |
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> |
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>So basically, how do I save an image as "one bit per pixel" like you'd |
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>think you'd send to a B&W printer? |
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> |
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>Even at 300dpi, I make that 300*300/8 ~= 10KB/in^2 or 800KB of |
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>uncompressed info for a page of A4, not 3MB. |
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> |
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>Cheers, |
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>Wol |
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> |
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Have you tried an optical character recognition software like Tesseract[1]? |
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1. https://github.com/tesseract-ocr/tesseract |
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-- |
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Hund |
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