Opencv处理AttributeError: ‘NoneType‘ object has no attribute ‘copy‘
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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在做一个答题卡识别的项目中,遇到了此问题,
报错的代码如下:
image = cv2.imread(args["image"])
contours_img = image.copy()
AttributeError如下:
File "E:/Python/python_user/Practice_codes/second/answer sheet/get_answer.py", line 78, in <module>
contours_img = image.copy()
AttributeError: 'NoneType' object has no attribute 'copy'
最终找到错误代码端为配置部分如下:
ap = argparse.ArgumentParser()
ap.add_argument("-i", "--image", required=True,
help="path to the input image")
修改为:
`ap = argparse.ArgumentParser()
ap.add_argument("-i", "--image", required=False, default='文件位置/test_01.png',
总结:个人此情况主要是两个方面,第一个是配置原因,第二个是文件路径的问题,检查文件路径以及 ‘_’, 文件路径不要中文,具体路径要写明测试图像名称。
OpenCV: 开源计算机视觉库
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105a7747
doc: update image codec configuration reference (add AVIF, fix JPEG XL) #28393
This PR updates the build configuration documentation to:
- Add AVIF to the supported format list (it was missing).
- Clarify that some codecs (AVIF, JPEG XL) do not support BUILD_* options because OpenCV does not bundle their source code.
- Update the description to include "write" capabilities for these formats.
### 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
- [ ] 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.
- [x] The feature is well documented and sample code can be built with the project CMake
1 天前
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