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opencv错误断言失败python

import numpy as np
import cv2

cap = cv2.VideoCapture(0)

while(True):
# Capture frame-by-frame
  ret, frame = cap.read()

# Our operations on the frame come here
  gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

# Display the resulting frame
  cv2.imshow('frame',gray)
  if cv2.waitKey(1) & 0xFF == ord('q'):
    break

# When everything done, release the capture
  cap.release()
  cv2.destroyAllWindows()
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OpenCV 错误:cvtColor 中断言失败 (scn == 3 || scn == 4),文件 /home/pi/opencv-2.4.9/modules/imgproc/src/color.cpp,第 3737 行回溯(最近一次调用最后一次) ):文件“test.py”,第11行,灰色= cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)cv2.error:/home/pi/opencv-2.4.9/modules/imgproc/src/color.cpp: 3737: 错误: (-215) scn == 3 || 函数 cvtColor 中的 scn == 4

python opencv

5
推荐指数
1
解决办法
2万
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