Python计算机视觉编程第一章

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0x01 代码安装

下载代码后在
PCV 目录下python setup.py install安装

0x02 PIL：Python图像处理类库

图像灰度转换

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pil_im = Image.open('empire.jpg').convert('L')

转换图像格式

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# -*- coding: utf-8 -*-
from PCV.tools.imtools import get_imlist
from PIL import Image
import os
import pickle

#获取convert_images_format_test文件夹下的图片文件名(包括后缀名)
filelist = get_imlist('../data/convert_images_format_test/')

#将获取的图片文件列表保存到imlist.txt中
imlist = file('../data/convert_images_format_test/imlist.txt','w')

#序列化
pickle.dump(filelist,imlist)
imlist.close()

for infile in filelist:
	#分离文件名与扩展名
    outfile = os.path.splitext(infile)[0] + ".png" 
    if infile != outfile:
        try:
            Image.open(infile).save(outfile)
        except IOError:
            print "cannot convert", infile