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Open Source

Dropbox Open Sources New Lossless Middle-Out Image Compression Algorithm (dropbox.com) 135

Dropbox announced on Thursday that it is releasing its image compression algorithm dubbed Lepton under an Apache open-source license on GitHub. Lepton, the company writes, can both compress and decompress files, and for the latter, it can work while streaming. Lepton offers a 22% savings reductions for existing JPEG images, and preserves the original file bit-for-bit perfectly. It compresses JPEG files at a rate of 5MB/s and decodes them back to the original bit at 15MB/s. The company says it has used Lepton to encode 16 billion images saved to Dropbox, and continues to utilize the technology to recode its older images. You can find more technical details here.

Comment What risk? (Score 1) 321

And the "risk" of someone viewing the image of an unknown sleeping baby, at some unknown location, is...? This is the same insanity that keeps parents from posting their kids pictures on line. Do they really think kidnappers are trolling facebook in order to find victims? Does that make any sense?

Comment Re:Parallax. (Score 5, Informative) 425

Gee, that's funny, because Samsung's official images of the S4 clearly show the camera protrusion from the side: http://www.gsmarena.com/samsun... And Apple shows their phone from both sides, so in those with the lens on the near side, it should be even more evident. But it's not. It's clear case of iLying.

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