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n |
Resaved
all images with ImageMagick to eliminate effect
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of
imaging software
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n |
Classification:
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– |
applied
range of operations, derived compression ratio, tried to
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correlate
it with image properties (size, number of colors, ….)
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– |
No
success, very limited reason to believe that we could be
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successful
(probability distributions for various parameters)
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n |
Most
effective operations:
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– |
GIF:
resize, reduce number of colors, convert to JPEG, convert to
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grayscale
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– |
JPEG:
reduce image quality, resize, convert to grayscale,
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despeckle
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