python手记(36)

#!/usr/bin/env python

#-*- coding: utf-8 -*-

#code:myhaspl@qq.com

import cv2

import numpy as np

fn="test.png"

if __name__ == '__main__':

    print 'http://blog.csdn.net/myhaspl'

    print 'myhaspl@qq.com'

    print

    print 'loading %s ...' % fn

    print 'working',

    img = cv2.imread(fn)

    w=img.shape[1]

    h=img.shape[0]

    sz1=w*2

    sz0=h*3

    #创建空白图像，然后将图片排列

    myimg1=np.zeros((sz1,sz0,3), np.uint8)

    #翻转并生成图像

    #逐个像素复制

    img_x=0

    img_y=0

    for now_y in xrange(0,sz0):

        for now_x in xrange(0,sz1):

            myimg1[now_x,now_y,:]=img[img_y,img_x,:]

            img_x+=1

            if img_x>=w:

                img_x=0

        img_y+=1

        if img_y>=h:

            img_y=0

        print '.',

    #加上水印

    cv2.putText(myimg1,"http://blog.csdn.net/myhaspl", (20,20),cv2.FONT_HERSHEY_PLAIN, 2.0, (0, 0, 0), thickness = 2)

    cv2.putText(myimg1,"code by myhaspl:myhaspl@qq.com", (20,100),cv2.FONT_HERSHEY_PLAIN, 2.0, (0, 0, 0), thickness = 2)

    cv2.namedWindow('img1')

    cv2.imshow('img1', myimg1)

    cv2.waitKey()

    cv2.destroyAllWindows()
python手记(36)
python opencv 旋转图片
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