解决OpenCV ValueError: not enough values to unpack (expected 3, got 2)

冷不防 2022-12-01 14:21 467阅读 0赞

opencv ValueError: not enough values to unpack (expected 3, got 2)

操作

  1. # 找出所有轮廓
  2. binary,contours, hierarchy = cv.findContours(binary, cv.RETR_EXTERNAL, cv.CHAIN_APPROX_NONE)

报错信息

  1. ValueError: not enough values to unpack (expected 3, got 2)

解决办法

  1. 查看版本
  2. pip list
  3. opencv-python  4.4.0.42
  5. # 切换版本
  6. pip install opencv-python==3.4.3.18 -i https://pypi.douban.com/simple
  9. Installing collected packages: opencv-python
  10.   Attempting uninstall: opencv-python
  11.     Found existing installation: opencv-python 4.4.0.42
  12.     Uninstalling opencv-python-4.4.0.42:
  13.       Successfully uninstalled opencv-python-4.4.0.42
  14. Successfully installed opencv-python-3.4.3.18

opencv 降版本就完了，虽然麻烦，但好使

欢迎大家交流学习，任何问题都可以留言

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