Python opencv(1) 显示图像

>>> import cv2
>>> fn="baboon.jpg"
>>> if __name__=='__main__':
...    print 'http://blog.csdn.net/myhasp1'
...    print 'myhasp1@qq.com'
...    print
...    print 'loading %s ...' % fn
...    img = cv2.imread(fn)
...    cv2.imshow('preview',img)
...    cv2.waitKey()
...    cv2.destroyAllWindows()
...