判断图片分辨率并修改，判断图片分辨率,[Python]代码#

判断图片分辨率并修改，判断图片分辨率,[Python]代码#

[Python]代码

# -*- coding: utf-8 -*-import os,sys,ImagerootDir = r'c:\images'targetDir = r'c:\imagesover'def encodeChinese(msg):    type = sys.getfilesystemencoding()    return msg.decode('UTF-8').encode(type)errFile = open(r'c:\errFile.txt','w')def judgeSize(im):    #判断图片分辨率,如果最大边超过1024返回False,如果不超过返回True        mySize = im.size    maxValue = max(mySize)        minValue = min(mySize)    if(maxValue > 1024):        return False    else:        return Truedef returnSize(im):    #返回图片大小,返回两个值,第一个返回值总为最大    max,min = im.size    if max > min:        return max,min    else:        return min,maxdef changeSize(im,max,min):    value = max/1024    min = min/value    newimg = im.resize((1024,min),Image.ANTIALIAS)    return newimgdef main():    for parent,dirnames,filenames in os.walk(rootDir):        for filename in filenames:            fName = filename            filename = parent + os.sep + filename            fPostfix = os.path.splitext(filename)[1]            try:                img = Image.open(filename)            except:                print filename                print encodeChinese('打开这个文件出错')                continue            #img.load()            print filename            print fPostfix            if(fPostfix !='.jpg' and fPostfix !='.png' and fPostfix != '.JPG' and fPostfix != '.PNG'):                errFile.write(str(filename) + '\n')                errFile.write(encodeChinese('上面这个文件不是图片,请检查...') + '\n')                errFile.write('\n')            else:                print 'juageSize()'                 if(judgeSize(img) == False):                    print 'judgeSize == False'                    max,min = returnSize(img)                    newimg = changeSize(img,max,min)                    newimg.save(targetDir + os.sep + fName)                    print str(targetDir + os.sep + fName)                     print encodeChinese('保存完毕')    print encodeChinese('处理完毕')    errFile.close()main()