Pycharm open CV learning 6

利用OPENCV 擷取需要圖形

但需要知道圖形要截取的正確座標

import cv2
import numpy as np

img=cv2.imread("resources/5.PNG")

width,height =250,350
pts1 = np.float32([[111,219],[287,188],[154,482],[352,440]])
pts2 = np.float32([[0,0],[width,0],[0,height],[width,height]])
matrix = cv2.getPerspectiveTransform(pts1,pts2)
imgOutput = cv2.warpPerspective(img,matrix,(width,height))

cv2.imshow("img",img)
cv2.imshow("imgOutput",imgOutput)
cv2.waitKey(0)