Re: Studying Lossy Image Compression Efficiency

2013-10-21 Thread battlebottle8
On Monday, October 21, 2013 4:05:36 PM UTC+1, tric...@accusoft.com wrote: > There is probably a good study by the EPFL from, IIRC, 2011, published at the > SPIE, Applications of Digital Image Processing, and many many others. > > Outcome is more or less that JPEG 2000 and JPEG XR are on par for a

Re: Studying Lossy Image Compression Efficiency

2013-10-19 Thread battlebottle8
On Saturday, October 19, 2013 12:30:15 PM UTC+1, Jeff Muizelaar wrote: > - Original Message - > > > On Saturday, October 19, 2013 12:12:14 AM UTC+1, Ralph Giles wrote: > > > > On 2013-10-18 1:57 AM, Yoav Weiss wrote: > > > > Do you have such a sample? > > > > > > For what it's worth h

Re: Studying Lossy Image Compression Efficiency

2013-10-19 Thread battlebottle8
On Saturday, October 19, 2013 12:12:14 AM UTC+1, Ralph Giles wrote: > On 2013-10-18 1:57 AM, Yoav Weiss wrote: > Do you have such a sample? For what it's worth here's an image I made quite awhile ago showing the results of my own blind subjective comparison between codecs: http://www.filedropper

Re: Studying Lossy Image Compression Efficiency

2013-10-18 Thread battlebottle8
Very interesting study. I’m shocked to see WebP and JPEG-XR perform so poorly on so many of the tests. Do they really perform *that* much *worse* than JPEG? It seems hard to imagine. I've done my own tests on jpeg, web-p and jpeg-xr by blindly comparing files of the same size and deciding subjec