Classification and Prediction
n Resaved all images with ImageMagick to eliminate effect
of imaging software
n Classification:
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)
n Most effective operations:
GIF: resize, reduce number of colors, convert to JPEG, convert to
grayscale
JPEG: reduce image quality, resize, convert to grayscale,
despeckle