On 04/28/2010 06:10 PM, Jed Rothwell wrote: > Correction: it is only 128 MB, not 392. The 392 MB version is JPG > format, and it is strangely blurry. It is supposed to be lossless but it > does not appear to be. Maybe I set it wrong.
JPG's never lossless. LZW is lossless; it's sort of a variation on Huffman coding (sort of like Huffman coding turned inside out). It (or a close relative) is also used for text compression, where "lossy" algorithms are of no value. > > Anyway, the LZW format looks pretty good. > > - Jed >
