opencv测试

import cv2
import numpy as np
from PIL import Image
img = cv2.imread("shapes.jpg", cv2.IMREAD_GRAYSCALE)

_, threshold = cv2.threshold(img, 240, 255, cv2.THRESH_BINARY)
_, contours, _ = cv2.findContours(threshold, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)

font = cv2.FONT_HERSHEY_COMPLEX

for cnt in contours:
    approx = cv2.approxPolyDP(cnt, 0.06*cv2.arcLength(cnt, True), True)
    cv2.drawContours(img, [approx], 0, (0), 5)
    x = approx.ravel()[0]
    y = approx.ravel()[1]

    if len(approx) == 3:
        cv2.putText(img, "Triangle", (x, y), font, 1, (0))
        r, g, b= img.getpixel((x, y))
        print (r, g, b)

cv2.imshow("shapes", img)
cv2.imshow("Threshold", threshold)

cv2.waitKey(0)
cv2.destroyAllWindows()



  

 

  
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文章来源: hiszm.blog.csdn.net，作者：孙中明，版权归原作者所有，如需转载，请联系作者。

原文链接：hiszm.blog.csdn.net/article/details/105655339