编译opencv4+contrib时下载xfeatures, wechat_cv等第三方库模型文件时下载网络出错的解决方法
opencv
OpenCV: 开源计算机视觉库
项目地址：https://gitcode.com/gh_mirrors/opencv31/opencv
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我已经下载好了相应的文件，将我上传的压缩包解压到opencv目录下的.cache目录中就可以了，目录架构像下面这样就可以了
/opencv/.cache/xxxxxxxxx(md5值)-xfeatures2d
更一般的解决方法是查看CMake过程中出现的下载链接，手动下载好后替换opencv目录下.cache中的文件，然后重新cmake …
GitHub 加速计划 / opencv31 / opencv
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OpenCV: 开源计算机视觉库
最近提交(Master分支：4 个月前 )
1f47f5ba
imgproc: replace assertion in cornerSubPix with descriptive error #28404
Replace CV_Assert with explicit bounds check for initial corners in cornerSubPix.
This provides a descriptive runtime error instead of abrupt termination,
improving error handling for Python and C++ users.
No algorithmic or behavioral change for valid inputs.
Fixes #25139 (Related to #7276).
### 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
- [x] The PR is proposed to the proper branch
- [x] 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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