慕工程0101907
尝试这个:import cv2import numpy as np input = cv2.imread('source.png')gray = cv2.cvtColor(input, cv2.COLOR_BGR2GRAY)#find all contoursimg = cv2.pyrDown(gray)_, threshed = cv2.threshold(gray, 128, 255, cv2.THRESH_BINARY)contours,_ = cv2.findContours(threshed, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)#find maximum contour and draw cmax = max(contours, key = cv2.contourArea) epsilon = 0.002 * cv2.arcLength(cmax, True)approx = cv2.approxPolyDP(cmax, epsilon, True)cv2.drawContours(input, [approx], -1, (0, 255, 0), 3)cv2.imshow("Contour", input)width, height = gray.shape#fill maximum contour and draw img = np.zeros( [width, height, 3],dtype=np.uint8 )cv2.fillPoly(img, pts =[cmax], color=(255,255,255))cv2.imshow("Filtered", img)cv2.waitKey(0)cv2.destroyAllWindows()算法:FindContours方法。您可以调整 epsilon 参数。以最大数量 - 这是你的叶子。填充这个最大计数并绘制它。现在您可以平滑它或执行任何其他形态学操作。结果: