close
import numpy as np
import cv2
def rotate(img, angle, center=None, scale=1.0):
testImg = cv2.imread(img)
(h, w) = testImg.shape[:2]
if center is None:
center = (w/2, h/2)
M = cv2.getRotationMatrix2D(center, angle, scale)
rotatedImg = cv2.warpAffine(testImg, M, (w, h))
cv2.imshow('result', rotatedImg)
cv2.waitKey(0)
rotate('test.jpg', -90)
※查詢其他OpenCV用法如下※
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