Chiebot-Mirror/opencv: Open Source Computer Vision Library - opencv - Gitea: Git with a cup of tea

Open Source Computer Vision Library https://opencv.org/

Paul Murphy a011035ed6 Merge pull request #15257 from pmur:resize * resize: HResizeLinear reduce duplicate work There appears to be a 2x unroll of the HResizeLinear against k, however the k value is only incremented by 1 during the unroll. This results in k - 1 duplicate passes when k > 1. Likewise, the final pass may not respect the work done by the vector loop. Start it with the offset returned by the vector op if implemented. Note, no vector ops are implemented today. The performance is most noticable on a linear downscale. A set of performance tests are added to characterize this. The performance improvement is 10-50% depending on the scaling. * imgproc: vectorize HResizeLinear Performance is mostly gated by the gather operations for x inputs. Likewise, provide a 2x unroll against k, this reduces the number of alpha gathers by 1/2 for larger k. While not a 4x improvement, it still performs substantially better under P9 for a 1.4x improvement. P8 baseline is 1.05-1.10x due to reduced VSX instruction set. For float types, this results in a more modest 1.2x improvement. * Update U8 processing for non-bitexact linear resize * core: hal: vsx: improve v_load_expand_q With a little help, we can do this quickly without gprs on all VSX enabled targets. * resize: Fix cn == 3 step per feedback Per feedback, ensure we don't overrun. This was caught via the failure observed in Test_TensorFlow.inception_accuracy.		5 years ago
.github	migration: github.com/opencv/opencv	9 years ago
3rdparty	ffmpeg/3.4: update FFmpeg wrapper	5 years ago
apps	FIx misc. source and comment typos	5 years ago
cmake	Merge pull request #15537 from l-bat:ngraph	5 years ago
data	Some mist. typo fixes	7 years ago
doc	pre: OpenCV 3.4.9 (version++)	5 years ago
include	add missing DNN header to opencv2/opencv.hpp	7 years ago
modules	Merge pull request #15257 from pmur:resize	5 years ago
platforms	pre: OpenCV 3.4.9 (version++)	5 years ago
samples	Merge pull request #16046 from alalek:issue_15990	5 years ago
.editorconfig	add .editorconfig	6 years ago
.gitattributes	cmake: generate and install ffmpeg-download.ps1	7 years ago
.gitignore	Merge pull request #15503 from cancerberoSgx:js-test-puppeteer	5 years ago
CMakeLists.txt	Merge pull request #15537 from l-bat:ngraph	5 years ago
CONTRIBUTING.md	migration: github.com/opencv/opencv	9 years ago
LICENSE	copyright: 2019	6 years ago
README.md	Improve README (#9243 )	7 years ago

README.md

OpenCV: Open Source Computer Vision Library

Resources

Homepage: http://opencv.org
Docs: http://docs.opencv.org/master/
Q&A forum: http://answers.opencv.org
Issue tracking: https://github.com/opencv/opencv/issues

Contributing

Please read the contribution guidelines before starting work on a pull request.

Summary of the guidelines:

One pull request per issue;
Choose the right base branch;
Include tests and documentation;
Clean up "oops" commits before submitting;
Follow the coding style guide.