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 12:12:14 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:

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 here's an image I

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