使用Python实现图像标记点的坐标输出功能

Sometimes we have need to interact  with an application,for example by　marking points in an image,or you need to annotation some training data.PyLab comes with a simple function　ginput() the let's you do just that .Here's a short example.

from PIL import Imagefrom pylab import *im = array(Image.open('test.jpg'))imshow(im)print 'Please click 3 points'x =ginput(3)print 'you clicked:',xshow()

This plots an image and waits for the user to click three times in the image region of the figures window.The coordinates[x,y] of the clicks are saved in a list x.

总结

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