ChangZhuo Chen dijo [Fri, Jul 15, 2016 at 09:20:06AM +0800]: > Package: wnpp > Severity: wishlist > Owner: "ChangZhuo Chen (陳昌倬)" <czchen@debian.org> > > * Package name : lepton > Version : 1.0 > Upstream Author : Copyright (c) 2016 Dropbox, Inc. > * URL : https://github.com/dropbox/lepton > * License : Apache-2 > Programming Lang: C > Description : tool to compress JPEGs losslessly > > Lepton is a tool and file format for losslessly compressing JPEGs by an > average of 22%. > . > This can be used to archive large photo collections, or to serve images > live and save 22% bandwidth. Umh, I read about this program, but this description (even if it matches the upstream one) is quite odd. JPEG is an inherently lossy format; even at top quality, the input image will not be identical to the output one (just "good enough" for our eyes). If Lepton can losslessly compress *any* images (or any photographic images, or whatever kind of transforms it does best), it should not mention as its description "to compress JPEGs losslessly", but "to compress this-kind-of-images losslessly". If it is "just" a tool that further compresses JPEGs, yielding back the original JPEG bit by bit, what is the advantage of its losslessness? I mean: It is a tool to make an absolutely faithful compression out of a somewhat faithful compression scheme. Please make the use case clearer!
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