[英]getting an error while doing thresholding Expected Ptr<cv::UMat> for argument '%s'
我是 OpenCv 的新手，我正在对灰度图像进行阈值处理，但它显示了一个错误，即TypeError: Expected Ptr for argument '%s'
grey = cv2.cvtColor(o, cv2.COLOR_BGR2GRAY)
thresh1 = cv2.threshold(cv2.UMat(grey),127,255,cv2.THRESH_BINARY)
cv2.imshow("thresh1",thresh1)
cv2.waitKey(0)
cv2.destroyAllWindows()
你不需要 cv2.UMat(grey)，只需要图像。
import cv2
grey = cv2.cvtColor(o, cv2.COLOR_BGR2GRAY)
a, thresh1 = cv2.threshold(grey, 127, 255,cv2.THRESH_BINARY)
cv2.imshow("thresh1",thresh1)
cv2.waitKey(0)
cv2.destroyAllWindows()
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