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fbarchard@google.com cfce47efc8 Change Sobel to use JPeg Luma calculation instead of extracting G channel. Using luma produces a better sobel that respects all 3 channels of RGB. Historically the G channel was used to improve performance, and because the luma of I420 is a constrained range, hurting quality. Using the JPeg variation of YUV, the luma is more accurate, including cross platform, better optimized for AVX2 and odd widths, and full range. 
BUG=444
TESTED=ARGBSobelXY_Opt
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/57479004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1414 16f28f9a-4ce2-e073-06de-1de4eb20be90
2015-05-27 22:32:26 +00:00
chromium Make Libyuv work with Chromium Git checkouts 2014-09-23 11:13:29 +00:00
include Change Sobel to use JPeg Luma calculation instead of extracting G channel. Using luma produces a better sobel that respects all 3 channels of RGB. Historically the G channel was used to improve performance, and because the luma of I420 is a constrained range, hurting quality. Using the JPeg variation of YUV, the luma is more accurate, including cross platform, better optimized for AVX2 and odd widths, and full range. 2015-05-27 22:32:26 +00:00
source Change Sobel to use JPeg Luma calculation instead of extracting G channel. Using luma produces a better sobel that respects all 3 channels of RGB. Historically the G channel was used to improve performance, and because the luma of I420 is a constrained range, hurting quality. Using the JPeg variation of YUV, the luma is more accurate, including cross platform, better optimized for AVX2 and odd widths, and full range. 2015-05-27 22:32:26 +00:00
tools/valgrind-libyuv Roll chromium_revision 271c6cc..2c3ffb2 (309333:317530) + fixes 2015-02-27 10:20:23 +00:00
unit_test Scale Down by factor tests scale down to specified ratio rather than up. This ensures the alignment constrains on the destination dont cause a different factor to be used. 2015-05-26 23:22:01 +00:00
util psnr tool, work around for ios 64 bit compiler where int passed into assembly needs to be explicitely cast to 'w' register. 2015-05-05 23:40:03 +00:00
.gitignore Fix standalone GN build. 2015-03-10 08:16:49 +00:00
all.gyp Android support 2013-11-21 19:57:10 +00:00
Android.mk add new scale_any to build files. 2015-03-30 23:20:14 +00:00
AUTHORS Adding AUTHORS file to libyuv 2011-11-01 20:44:21 +00:00
BUILD.gn add new scale_any to build files. 2015-03-30 23:20:14 +00:00
CMakeLists.txt add new scale_any to build files. 2015-03-30 23:20:14 +00:00
codereview.settings Add PROJECT setting to codereview.settings 2015-04-28 14:29:24 +00:00
DEPS Roll chromium deps to version that includes vs2015 link error fix. 2015-04-30 23:37:32 +00:00
download_vs_toolchain.py Roll chromium_revision 260824:262938 + fix binutils. Since it's not possible to have platform-specific hooks executing, binutils must be downloaded for all platforms in order for the download.py hook to execute properly on non-unix platforms. 2014-04-11 23:40:41 +00:00
drover.properties Add drover.properties for libyuv 2015-02-24 10:06:44 +00:00
gyp_libyuv Make Libyuv work with Chromium Git checkouts 2014-09-23 11:13:29 +00:00
gyp_libyuv.py Minor fixes to gyp_libyuv.py 2014-03-28 19:38:05 +00:00
libyuv_nacl.gyp NaCl/GYP: remove references to prep_toolchain from libyuv. prep_toolchain is now a no-op. 2015-04-22 17:42:21 +00:00
libyuv_test.gyp Improve the accuracy YUV to RGB for ARMv7 NEON 2015-02-25 06:51:29 +00:00
libyuv.gyp enable speed optimization for libyuv 2015-05-11 21:58:42 +00:00
libyuv.gypi Add ScaleFilterCols_NEON for ARM32/64 2015-03-19 03:55:05 +00:00
LICENSE Update Copyright notice to follow new chromium conventions. 2012-08-08 19:04:24 +00:00
LICENSE_THIRD_PARTY README.chromium license field for WebView and LICENSE_THIRD_PARTY to show files with special licenses. 2013-04-24 00:12:28 +00:00
linux.mk Remove bayer format support from libyuv. This format is very rare and used on legacy hardware. Its not well optimized and has bugs related to odd widths. Removing the format will allow tests to pass under more circumstances, run faster and allow focus on higher priority quality and performance issues. 2015-02-09 19:58:19 +00:00
OWNERS Remove blank lint from OWNERS. Move FixedDiv into row functions to avoid changing build files. 2013-06-17 23:04:13 +00:00
PATENTS LibYuv: Adding PATENT and LICENSE files 2011-10-25 16:15:49 +00:00
PRESUBMIT.py Roll chromium_revision 271c6cc..2c3ffb2 (309333:317530) + fixes 2015-02-27 10:20:23 +00:00
public.mk Android.mk moved into libyuv to central support 2012-09-19 07:27:17 +00:00
README.chromium Change Sobel to use JPeg Luma calculation instead of extracting G channel. Using luma produces a better sobel that respects all 3 channels of RGB. Historically the G channel was used to improve performance, and because the luma of I420 is a constrained range, hurting quality. Using the JPeg variation of YUV, the luma is more accurate, including cross platform, better optimized for AVX2 and odd widths, and full range. 2015-05-27 22:32:26 +00:00
setup_links.py Fix standalone GN build. 2015-03-10 08:16:49 +00:00
sync_chromium.py Roll chromium_revision 271c6cc..2c3ffb2 (309333:317530) + fixes 2015-02-27 10:20:23 +00:00
winarm.mk Remove bayer format support from libyuv. This format is very rare and used on legacy hardware. Its not well optimized and has bugs related to odd widths. Removing the format will allow tests to pass under more circumstances, run faster and allow focus on higher priority quality and performance issues. 2015-02-09 19:58:19 +00:00

README.chromium 

Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 1416
License: BSD
License File: LICENSE

Description:
libyuv is an open source project that includes YUV conversion and scaling functionality.