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Open Source Computer Vision Library
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天音あめ 14e1f6ce96
Merge pull request #27160 from amane-ame:resize_hal_rvv 
Add RISC-V HAL implementation for cv::resize #27160

This patch implements `cv_hal_resize` using native intrinsics, optimizing the performance of `cv::resize` for `CV_INTER_NEAREST/CV_INTER_NEAREST_EXACT/CV_INTER_LINEAR/CV_INTER_LINEAR_EXACT/CV_INTER_AREA` modes.

Tested on MUSE-PI (Spacemit X60) for both gcc 14.2 and clang 20.1.

```
$ ./opencv_test_imgproc --gtest_filter="*Resize*:*resize*"
$ ./opencv_perf_imgproc --gtest_filter="*Resize*:*resize*" --perf_min_samples=300 --perf_force_samples=300
```

View the full perf table here: [hal_rvv_resize.pdf](https://github.com/user-attachments/files/19480756/hal_rvv_resize.pdf)

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] 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
2025-03-31 08:19:18 +03:00
.github Removed Android test as it's broken for now. 2025-02-18 12:52:24 +03:00
3rdparty Merge pull request #27160 from amane-ame:resize_hal_rvv 2025-03-31 08:19:18 +03:00
apps Remove useless C headers 2025-01-13 16:34:28 +01:00
cmake Set C++ standard for all CUDA configurations. 2025-03-25 16:47:12 +03:00
data Merge pull request #22727 from su77ungr:patch-1 2022-11-17 06:54:25 +00:00
doc doc: unwrap promise-typed cv object 2025-03-25 23:16:19 +09:00
include exclude opencv_contrib modules 2020-02-26 15:12:45 +03:00
modules Merge pull request #27154 from kinchungwong:logging_callback_simple_c 2025-03-30 16:17:07 +03:00
platforms RISC-V: error message in the toolchain file when compiler is not found 2025-02-10 18:47:26 +03:00
samples minor changes : Replace ndarray.ptp() with np.ptp() for NumPy 2.0 Compatibility 2025-03-23 23:38:33 +05:30
.editorconfig add .editorconfig 2018-10-11 17:57:51 +00:00
.gitattributes cmake: generate and install ffmpeg-download.ps1 2018-06-09 13:19:48 +03:00
.gitignore Merge pull request #17165 from komakai:objc-binding 2020-06-08 18:32:53 +00:00
CMakeLists.txt Add comment for CMake 3.18+: if CMAKE_CUDA_ARCHITECTURES is empty enable_language(CUDA) sets it to the default architecture chosen by the compiler, to trigger the OpenCV custom CUDA architecture search an empty value needs to be respected see https://github.com/opencv/opencv/pull/25941. 2025-03-27 16:40:01 +02:00
CONTRIBUTING.md migration: github.com/opencv/opencv 2016-07-12 12:51:12 +03:00
COPYRIGHT copyright: 2023 (update) 2023-01-09 09:49:22 +00:00
LICENSE Merge pull request #18073 from vpisarev:apache2_license 2020-08-17 11:49:11 +00:00
README.md Space mistake in README.md 2024-03-03 23:37:07 +05:30
SECURITY.md Updated PGP key for security reports 2023-04-19 19:16:55 +03:00

README.md

OpenCV: Open Source Computer Vision Library

Resources

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.

Additional Resources