python实现图片变亮或变暗的方法分析

python实现图片变亮或变暗是如何来实现的呢?下面的内容将会通过具体的实例来演示python实现图片变亮或变暗的实现方法及相关技巧:

本文实例讲述了python实现图片变亮或者变暗的方法。分享给大家供大家参考。具体实现方法如下:

import Image
# open an image file (.jpg or.png) you have in the working folder
im1 = Image.open(“angelababy.jpg”)
# multiply each pixel by 0.9 (makes the image darker)
# works best with .jpg and .png files, darker < 1.0 < lighter # (.bmp and .gif files give goofy results) # note that lambda is akin to a one-line function im2 = im1.point(lambda p: p * 0.5) # brings up the modified image in a viewer, simply saves the image as # a bitmap to a temporary file and calls viewer associated with .bmp # make certain you have associated an image viewer with this file type im2.show() # save modified image to working folder as Audi2.jpg im2.save("angelababy2.jpg") [/code]

运行效果如下所示:

python实现图片变亮或变暗的方法分析
python实现图片变亮或变暗的方法分析


python实现图片变亮或变暗就是这样,欢迎大家参考。。。。

You might also like:

Sidebar