python opencv画图可视化

画直线

import numpy as np
import cv2

# Create a black image
img = np.zeros((
           

画polygon

import numpy as np
import cv2

# Create a black image
img = np.zeros((512,512,3), np.uint8)

pts = np.array([[10,5],[20,30],[70,20],[50,10]], np.int32)
pts = pts.reshape((-1,1,2))
cv2.polylines(img,[pts],True,(0,255,255))


cv2.imshow('line',img)
cv2.waitKey()
           

https://segmentfault.com/a/1190000015585635

转载于:https://www.cnblogs.com/ymjyqsx/p/10244490.html