python有一个图像处理库——PIL，能够处理图像文件。PIL提供了功能丰富的方法，好比格式转换、旋转、裁剪、改变尺寸、像素处理、图片合并等等等等，很是强大。python
举个简单的例子，调整图片的大小:blog
import Image infile = 'D:\\original_img.jpg' outfile = 'D:\\adjust_img.jpg' im = Image.open(infile) (x,y) = im.size #read image size x_s = 250 #define standard width y_s = y * x_s / x #calc height based on standard width out = im.resize((x_s,y_s),Image.ANTIALIAS) #resize image with high-quality out.save(outfile) print 'original size: ',x,y print 'adjust size: ',x_s,y_s ''' OUTPUT: original size: 500 358 adjust size: 250 179 '''