使用Python实现图像标记点的坐标输出

最新推荐文章于 2025-06-01 22:54:34 发布

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最新推荐文章于 2025-06-01 22:54:34 发布

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分类专栏：【OpenCV/Python】文章标签：计算机视觉图像处理图像标记点的坐标

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本文介绍如何利用PyLab库中的ginput()函数实现在图像上进行交互式标注。通过展示一个具体示例，读者可以了解到如何加载图像、提示用户点击特定数量的点并获取这些点击位置的坐标。

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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 Image
from pylab import *

im = array(Image.open('test.jpg'))
imshow(im)
print 'Please click 3 points'
x =ginput(3)
print 'you clicked:',x
show()

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.