opencv错误及解决集合

• cv2.imwrite 报错 could not find a writer for the specified extension in function imwrite_

报错提示不能为imwrite()找到特定扩展名的writer, 因为outputloc必须是后缀png或者jpg等图像后缀。将outputloc改成带后缀的图片即可

• Ubuntu系统opencv4.4安装常见问题 找不到 feature2d/test/test_detectors_regression.impl.hpp 文件

https://blog.csdn.net/xiewenrui1996/article/details/108683866

https://pythontechworld.com/article/detail/6NVJec4E1mbz

• fatal error: boostdesc_bgm.i: No such file or directory

https://blog.csdn.net/curious_undergather/article/details/111639199

• python+openCV利用函数cv2.findContours()和cv2.drawContours查找并绘制轮廓

https://blog.csdn.net/weixin_42216109/article/details/89840323

• 解决 fatal error: Eigen/Core: No such file or directory

https://blog.csdn.net/qq_43872529/article/details/100937091

• 找不到opencv_world3413.dll的解决办法 https://www.cnblogs.com/MorStar/p/14824081.html

• OpenCV-Python installation - CMake error missing vtkRenderingOpenGL

-D WITH_VTK=OFF -D BUILD_opencv_viz=OFF

• Undefined reference to `omp_get_max_threads_'
• The code needs to be compiled with -fopenmp