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...re for the wavelet DC image, but I just choose the overall best coding mode for the whole wavelet DC image... this is not optimal, I can really save bits if for example I split the wavelet DC image in 16x16 blocks, and give the one appropriate mode to each block, adapted to its nature. Again using paq8px compressor, and simply compressing the .nhw compressed files, we see that we can save 2.5KB per .nhw file... Any feedback on the new -l14 quality setting and on the quality improvements is, as usual, very welcome! Many thanks again! Cheers, Raphael -------------- next part -------------- An HTML...

...know that compression of the wavelet DC image is really not efficient at extreme compression, I have the fast ideas to improve it, and so we can really save 2.5KB per .nhw compressed files in average at extreme compression (this is confirmed by recompressing the .nhw files with a compressor such as paq8px or other). I don't know if my eyes play trick on me, but I have tested -l18 "extreme" compression quality setting on 30 rather good quality images, and on these images I clearly prefer the results of the NHW Project compared to x265 (HEVC)!!! More at: http://nhwcodec.blogspot.com/...