RGB to/from Gray rewritten to wide intrinsics (port to master)#13440
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alalek merged 4 commits intoopencv:masterfrom Dec 17, 2018
Merged
RGB to/from Gray rewritten to wide intrinsics (port to master)#13440alalek merged 4 commits intoopencv:masterfrom
alalek merged 4 commits intoopencv:masterfrom
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a-sajjad72
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Mar 30, 2023
* conversions of color_rgb.cpp vectorized * CL impl: coeffs updated * unused constants removed * CUDA color coeffs updated
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asmorkalov
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Sep 3, 2024
Remove the redundant codes of cv::convertMaps and mRGBA2RGBA<uchar> #26071 (1) cv::convertMaps: the branch [else if( m1type == CV_32FC2 && dstm1type == CV_16SC2 ) if( nninterpolate )] is unreachable, as the condition is satisfied in lines 1959 to 1961, calculated in advance and return directly. (2) mRGBA2RGBA<uchar>: dst[0], dst[1], dst[2] and dst[3] is calculated repeatedly. Introduced in #13440 ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [ ] I agree to contribute to the project under Apache 2 License. - [ ] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [ ] The PR is proposed to the proper branch - [ ] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake
thewoz
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Feb 13, 2025
Remove the redundant codes of cv::convertMaps and mRGBA2RGBA<uchar> opencv#26071 (1) cv::convertMaps: the branch [else if( m1type == CV_32FC2 && dstm1type == CV_16SC2 ) if( nninterpolate )] is unreachable, as the condition is satisfied in lines 1959 to 1961, calculated in advance and return directly. (2) mRGBA2RGBA<uchar>: dst[0], dst[1], dst[2] and dst[3] is calculated repeatedly. Introduced in opencv#13440 ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [ ] I agree to contribute to the project under Apache 2 License. - [ ] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [ ] The PR is proposed to the proper branch - [ ] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake
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port of PR #13379 to master
This pullrequest changes
See original PR description
The only difference is RGB2Gray integer coefficients set which are Q15 here (they were Q14 in 3.4 branch for backward compatibility).