pythonopencv旋转图像(保持图像不被裁减)-创新互联
本文实例为大家分享了python opencv旋转图像的具体代码,保持图像不被裁减,供大家参考,具体内容如下
创新互联建站专注于樊城企业网站建设,响应式网站,商城网站建设。樊城网站建设公司,为樊城等地区提供建站服务。全流程按需制作,专业设计,全程项目跟踪,创新互联建站专业和态度为您提供的服务# -*- coding:gb2312 -*- import cv2 from math import * import numpy as np img = cv2.imread("3-2.jpg") height,width=img.shape[:2] degree=45 #旋转后的尺寸 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 #重点在这步,目前不懂为什么加这步 matRotation[1,2] +=(heightNew-height)/2 #重点在这步 imgRotation=cv2.warpAffine(img,matRotation,(widthNew,heightNew),borderValue=(255,255,255)) cv2.imshow("img",img) cv2.imshow("imgRotation",imgRotation) cv2.waitKey(0)
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