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#!/usr/bin/env python
#-*- coding: utf-8 -*-
import cv2
import numpy as npfn="test2.jpg"if __name__ == '__main__':print 'http://blog.csdn.net/myhaspl'print 'myhaspl@qq.com'printprint 'loading %s ...' % fnprint '正在处理中',img = cv2.imread(fn)w=img.shape[1]h=img.shape[0] ii=0#生成日落效果#b[:,:] = img[:,:,0] #g[:,:] = img[:,:,1] #r[:,:] = img[:,:,2] for xi in xrange(0,w):for xj in xrange (0,h):img[xj,xi,0]= int(img[xj,xi,0]*0.7)img[xj,xi,1]= int(img[xj,xi,1]*0.7)if xi%10==0 :print '.', cv2.namedWindow('img') cv2.imshow('img', img) cv2.waitKey()cv2.destroyAllWindows()
以下是数组存放红、绿、蓝的位置
#b[:,:] = img[:,:,0] #g[:,:] = img[:,:,1] #r[:,:] = img[:,:,2]
>>>
http://blog.csdn.net/myhaspl
myhaspl@qq.com
loading test2.jpg ...
正在处理中 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
>>>
原图是:
也可以如下操作
#!/usr/bin/env python
#-*- coding: utf-8 -*-
import cv2
import numpy as npfn="test2.jpg"if __name__ == '__main__':print 'http://blog.csdn.net/myhaspl'print 'myhaspl@qq.com'printprint 'loading %s ...' % fnprint '正在处理中',img = cv2.imread(fn)w=img.shape[1]h=img.shape[0] ii=0#生成日落效果#取色彩分量b, g, r = cv2.split(img)b=b*0.7g=g*0.7#直接通过索引改变色彩分量 img[:,:,0]=bimg[:,:,1]=g cv2.namedWindow('img') cv2.imshow('img', img) cv2.waitKey()cv2.destroyAllWindows()
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