libwebp/extras
Pascal Massimino ba843a92e7 fix some SSIM calculations
* prevent 64bit overflow by controlling the 32b->64b conversions
  and preventively descaling by 8bit before the final multiply
* adjust the threshold constants C1 and C2 to de-emphasis the dark
  areas
* use a hat-like filter instead of box-filtering to avoid blockiness
  during averaging

SSIM distortion calc is actually *faster* now in SSE2, because of the
unrolling during the function rewrite.
The C-version is quite slower because still un-optimized.

Change-Id: I96e2715827f79d26faae354cc28c7406c6800c90
2016-10-04 01:09:07 -07:00
..
extras.c Add an API to import a color-mapped image. 2016-09-28 14:23:23 +02:00
extras.h Add an API to import a color-mapped image. 2016-09-28 14:23:23 +02:00
get_disto.c fix some SSIM calculations 2016-10-04 01:09:07 -07:00
Makefile.am {extras,mux}/Makefile.am: add missing -lm 2016-08-15 22:32:46 -07:00
quality_estimate.c webp_quality: detect lossless format and features 2016-07-22 00:16:56 -07:00
webp_quality.c webp_quality should return '0' in case of success. 2016-08-20 21:07:31 +02:00