我的部分代码遇到一些问题。我想cv.Watershed在Python算法之后找到轮廓。说实话，我不知道该怎么做。
这是我的代码：
kernel = np.ones((3, 3), np.uint8)
# sure background area
sure_bg = cv2.dilate(image, kernel, iterations=5)
opening = cv2.morphologyEx(image, cv2.MORPH_OPEN, kernel, iterations=2)
# Finding sure foreground area
dist_transform = cv2.distanceTransform(opening, cv2.DIST_L2, 3)
ret, sure_fg = cv2.threshold(dist_transform, 0.4 * dist_transform.max(), 255, 0)
# Finding unknown region
sure_fg = np.uint8(sure_fg)
cv.imshow('mark ', sure_fg)
cv.waitKey(0)
# sure_fg = cv2.erode(sure_fg,kernel,iterations=3)
unknown = cv2.subtract(sure_bg, sure_fg)
# Marker labelling
ret, markers = cv2.connectedComponents(sure_fg)
# Add one to all labels so that sure …