Today, some funny image happened to me when trying to improve the contrast of some digital facsimile scans for a neighbor of mine. Dear neighbor, can u guess in a comment the worksheet number where this image belongs to? And to the other guys and gals out there: what might that be? Jus’ crazy, isn’t it. Here is how I made it, with the “local adaptive threshold” option of the nice free software tool  “convert” from ImageMagick:

convert -lat 30×30+20% infile.jpg outfile.jpg


Start date: 2007-12-07
Post date: 2007-12-07
Version date: 2007-12-07 (for last meaningful change)

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