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Title: What is wrong with this jpeg based image compression?
As an assignment i wrote a simple jpg like image compression. But after i encode it ,and decode it the image changes drasticaly. The mDCT() and mIDCT() do the discrete cosine transform and the invers.
For 8-by-8 matrixes i tested them and seem to be ok. But when i use them on a test image i cant figure out whats wrong. The file's can be found here. Link to files