python手記(32)

#!/usr/bin/env python#-*- coding: utf-8 -*-import cv2import numpy as npfn="test2.jpg"if __name__ == '__main__':    print 'http://blog.csdn.net/myhaspl'    print 'myhaspl@qq.com'    print    print 'loading %s ...' % fn    print '正在處理中',    img = cv2.imread(fn)    w=img.shape[1]    h=img.shape[0]        ii=0    #產生底片    b, g, r = cv2.split(img)    b=255-b    g=255-g    r=255-r    #直接通過索引改變色彩分量     img[:,:,0]=b    img[:,:,1]=g    img[:,:,2]=r    #加上浮水印    cv2.putText(img,"http://blog.csdn.net/myhaspl", (20,20),cv2.FONT_HERSHEY_PLAIN, 2.0, (0, 0, 0), thickness = 2)    cv2.putText(img,"code by myhaspl:myhaspl@qq.com", (20,100),cv2.FONT_HERSHEY_PLAIN, 2.0, (0, 0, 0), thickness = 2)        cv2.namedWindow('img')         cv2.imshow('img', img)    cv2.waitKey()    cv2.destroyAllWindows()

opencv底片效果和加上浮水印