Thomas Kunz
Dept. of Systems and Computer Engineering
9
Classification and Prediction
nResaved all images with ImageMagick to eliminate effect of imaging software
nClassification:
–applied
range of operations, derived compression ratio, tried to correlate it with image properties (size, number of
colors, ….)
–No success,
very limited reason to believe that we could be successful (probability distributions for various
parameters)
nMost effective operations:
–GIF:
resize, reduce number of colors, convert to JPEG, convert to grayscale
–JPEG:
reduce image quality, resize, convert to grayscale, despeckle