如下所示:
import cv2 import math import numpy as np def move(img): height, width, channels = img.shape emptyImage2 = img.copy() x=20 y=20 for i in range(height): for j in range(width): if i>=x and j>=y: emptyImage2[i,j]=img[i-x][j-y] else: emptyImage2[i,j]=(0,0,0) return emptyImage2 img = cv2.imread("e:\\lena.bmp") cv2.namedWindow("Image") SaltImage=move(img) cv2.imshow("Image",img) cv2.imshow("ss",SaltImage) cv2.waitKey(0)
旋转:
import cv2 import math import numpy as np def XRotate(image, angle): h, w, channels = image.shape anglePi = angle * math.pi / 180.0 cosA = math.cos(anglePi) sinA = math.sin(anglePi) X1 = math.ceil(abs(0.5 * h * cosA + 0.5 * w * sinA)) X2 = math.ceil(abs(0.5 * h * cosA - 0.5 * w * sinA)) Y1 = math.ceil(abs(-0.5 * h * sinA + 0.5 * w * cosA)) Y2 = math.ceil(abs(-0.5 * h * sinA - 0.5 * w * cosA)) hh = int(2 * max(Y1, Y2)) ww = int(2 * max(X1, X2)) emptyImage2 = np.zeros((hh, ww, channels), np.uint8) for i in range(hh): for j in range(ww): x = cosA * i + sinA * j - 0.5 * ww * cosA - 0.5 * hh * sinA + 0.5 * w y = cosA * j- sinA * i+ 0.5 * ww * sinA - 0.5 * hh * cosA + 0.5 * h x = int(x) y = int(y) if x > -1 and x < h and y > -1 and y < w : emptyImage2[i, j] = image[x, y] return emptyImage2 image = cv2.imread("e:\\lena.bmp") iXRotate12 = XRotate(image, 30) cv2.imshow('image', image) cv2.imshow('iXRotate12', iXRotate12) cv2.waitKey(0)
以上这篇python 图像平移和旋转的实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持呐喊教程。
声明:本文内容来源于网络,版权归原作者所有,内容由互联网用户自发贡献自行上传,本网站不拥有所有权,未作人工编辑处理,也不承担相关法律责任。如果您发现有涉嫌版权的内容,欢迎发送邮件至:notice#nhooo.com(发邮件时,请将#更换为@)进行举报,并提供相关证据,一经查实,本站将立刻删除涉嫌侵权内容。