有关python下二维码识别用法及识别率对比分析

#-*-coding=utf-8-*-
import os 
import logging
import zbar 
from PIL import Image 
import zxing
import random
import zbarlight

logger=logging.getLogger(__name__)
if not logger.handlers :logging.basicConfig(level=logging.INFO)
DEBUG= (logging.getLevelName(logger.getEffectiveLevel())=='DEBUG')  


def ocr_qrcode_zbar(filename):
    img=Image.open(filename)
    width, height = img.size
    raw = img.tobytes()
    
    scanner = zbar.ImageScanner()
    scanner.parse_config('enable')        
    #把图像装换成数据
    zarimage = zbar.Image(width, height, 'Y800', raw)    
    #扫描器进行扫描
    scanner.scan(zarimage)
    
    data = '' 
    for symbol in zarimage:
        # 对结果进行一些有用的处理
        data += symbol.data 
    if data:
        logger.debug(u'识别二维码:%s,内容: %s' %(filename ,data))
    else:
        logger.error(u'识别zbar二维码出错:%s' %(filename))
        img.save('%s-zbar.jpg' %filename)  
    return data 

def ocr_qrcode_zbarlight(filename):
    img=Image.open(filename)

    width, height = img.size
    raw = img.tobytes()
        
    #把图像装换成数据
    data = zbarlight.qr_code_scanner(raw, width, height)    

    if data:
        logger.debug(u'识别二维码:%s,内容: %s' %(filename ,data))
    else:
        logger.error(u'识别zbarlight二维码出错:%s' %(filename))
        img.save('%s-zbar.jpg' %filename)  
    return data 

def ocr_qrcode_zxing(filename):
    #在当前目录生成临时文件，规避java的路径问题
    img= Image.open(filename)
    ran= int(random.random()*100000)
    img.save('%s%s.jpg' %(os.path.basename(filename).split('.')[0],ran))
    zx = zxing.BarCodeReader()
    data =''
    zxdata = zx.decode('%s%s.jpg' %(os.path.basename(filename).split('.')[0],ran))
    #删除临时文件
    os.remove('%s%s.jpg' %(os.path.basename(filename).split('.')[0],ran))
    if zxdata:
        logger.debug(u'zxing识别二维码:%s,内容: %s' %(filename ,zxdata.data))
        data = zxdata.data
    else:
        logger.error(u'识别zxing二维码出错:%s' %(filename))
        img.save('%s-zxing.jpg' %filename)  
    return data

    
if __name__ == '__main__': 
    filename =r'D:\python\00025328.jpg'
 
    #zbar二维码识别
    ltext = ocr_qrcode_zbar(filename)
    logger.info( u'[%s]Zbar二维码识别:[%s]!!!' %(filename,ltext))
    print ltext
    
    #zbarlight二维码识别
    ltext = ocr_qrcode_zbarlight(filename)
    logger.info( u'[%s]Zxing二维码识别:[%s]!!!' %(filename,ltext))
    print ltext 

    #zxing二维码识别
    ltext = ocr_qrcode_zxing(filename)
    logger.info( u'[%s]Zxing二维码识别:[%s]!!!' %(filename,ltext))
    print ltext