Adaptive Weighted Neighbors Lossless Image Coding
Adaptive Weighted Neighbors Lossless Image Coding AWN is a symmetric lossless image compression algorithm. AWN makes two initial predictions, creates a weighted combination of the initial predictions before adjusting the prediction to end up with the final prediction. In order to achieve more compression, we encode the error in multiple bins depending on the expected error magnitude. Also, instead of encoding the signed error, the algorithm attempts to guess the sign and encodes the error magnitude and whether guessing the sign was successful or not.
KeywordsImage compression Lossless compression Context modeling Adaptive prediction Entropy coding
This research is partially funded by the Natural Sciences and Engineering Research Council of Canada (NSERC). This support is greatly appreciated.
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