pycharm中报错cv2.error: 怎么解决

Question

pycharm中报错cv2.error: OpenCV(4.7.0) D:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'怎么解决，求求大佬

Answer 1

这个错是怎么回事啊？？？？？

Traceback (most recent call last):
  File "/hy-tmp/project_01/main.py", line 45, in <module>
    cv2.imwrite(os.path.join(img_save_dir, "Hlt.png"), Hlt, [int(cv2.IMWRITE_PNG_COMPRESSION), 0.3])
cv2.error: OpenCV(4.10.0) :-1: error: (-5:Bad argument) in function 'imwrite'
> Overload resolution failed:
>  - Can't parse 'params'. Sequence item with index 1 has a wrong type
>  - Can't parse 'params'. Sequence item with index 1 has a wrong type
```python