本文實(shí)例為大家分享了python opencv旋轉(zhuǎn)圖像的具體代碼，保持圖像不被裁減，供大家參考，具體內(nèi)容如下
# -*- coding:gb2312 -*-import cv2from math import *import numpy as npimg = cv2.imread("3-2.jpg")height,width=img.shape[:2]degree=45#旋轉(zhuǎn)后的尺寸heightNew=int(width*fabs(sin(radians(degree)))+height*fabs(cos(radians(degree))))widthNew=int(height*fabs(sin(radians(degree)))+width*fabs(cos(radians(degree))))matRotation=cv2.getRotationMatrix2D((width/2,height/2),degree,1)matRotation[0,2] +=(widthNew-width)/2 #重點(diǎn)在這步，目前不懂為什么加這步matRotation[1,2] +=(heightNew-height)/2 #重點(diǎn)在這步imgRotation=cv2.warpAffine(img,matRotation,(widthNew,heightNew),borderValue=(255,255,255))cv2.imshow("img",img)cv2.imshow("imgRotation",imgRotation)cv2.waitKey(0)效果圖：
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