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。

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 )
6950bedb Use Mat::total() in Darknet IO 22 小时前
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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