python手記(39)

#!/usr/bin/env python#-*- coding: utf-8 -*-#code:myhaspl@qq.comimport cv2import numpy as npfn="test1.jpg"print 'http://blog.csdn.net/myhaspl'print 'myhaspl@qq.com'printprint 'loading %s ...' % fnprint 'working',img = cv2.imread(fn)w=img.shape[1]h=img.shape[0]sz1=wsz0=hEVENTS = ['CV_EVENT_MOUSEMOVE', 'CV_EVENT_LBUTTONDOWN', 'CV_EVENT_RBUTTONDOWN',  'CV_EVENT_MBUTTONDOWN',  'CV_EVENT_LBUTTONUP',          'CV_EVENT_RBUTTONUP', 'CV_EVENT_MBUTTONUP'  , 'CV_EVENT_LBUTTONDBLCLK','CV_EVENT_RBUTTONDBLCLK','CV_EVENT_MBUTTONDBLCLK']def callback_function(event,x,y,flag,param):        global EVENTS        global img                if EVENTS[event]=='CV_EVENT_LBUTTONDOWN':                print "(%d,%d):"%(y,x)                print img[y,x,:]                cv2.imshow('img', img)                    returndef getdistance(color1,color2):    return np.sqrt(sum((color1-color2)*(color1-color2)))cv2.namedWindow('img')     cv2.setMouseCallback('img', callback_function)cv2.imshow('img', img)     cv2.waitKey()  cv2.destroyAllWindows()

python opencv 滑鼠事件