OpenCV CV2.PLOYLINES draws polygon
tags: OpenCV python cv2.polylines Draw polygon
Reference materials:Python-opencv-drawing (drawing line, rectangular, round, plus text) _zangba9624 blog-CSDN blog
Sample code
# -*- coding:utf-8 -*-
import cv2
import numpy as np
img = cv2.imread("1.jpg", 1)
PTS = np.array ([[10, 10], [400, 10], [400, 400], [10, 400], np.int32) # Data type must be INT32
pts = pts.reshape((-1, 1, 2))
# Draw an uns filled polygon
cv2.polylines(img, [pts], isClosed=True, color=(0,0,255), thickness=1)
# Draw a filling polygon
# cv2.fillPoly(img, [pts], color=(255, 255, 0))
cv2.imshow('img', img)
cv2.waitKey()
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