python2 python3实现二维码扫描

pip 安装 opencv 教程 https://hotdog29.com/?p=550

python2 使用zbar进行识别

// 扫描二维码图片
import cv2
from PIL import Image
import zbar

def decode():
    scanner = zbar.ImageScanner()
    scanner.parse_config('enable')
    img = Image.open('1.jpg').convert('L')
    width,height = img.size
    raw = img.tobytes()
    zbarimage = zbar.Image(width,height,'Y800',raw)
    scanner.scan(zbarimage)
    data = ''
    for symbol in zbarimage:
        data +=symbol.data
    print(data)
    
decode()           

// 打开摄头扫描二维码　写入txt文档
import cv2
from PIL import Image
import zbar

def detect():
    camera = cv2.VideoCapture(0)
    while True:
        flag,frame = camera.read()
        data = decode(frame)
        if decode(frame) !='':
            with open('data.txt','a') as f:
                f.write(data)
            break
        cv2.waitKey(1)
        cv2.imshow('camera',frame)
    camera.release()
    cv2.destroyAllWindows()

def decode(frame):
    scanner = zbar.ImageScanner()
    scanner.parse_config('enable')
    img = Image.fromarray(frame).convert('L')
    width,height = img.size
    raw = img.tobytes()
    zbarimage = zbar.Image(width,height,'Y800',raw)
    scanner.scan(zbarimage)
    data = ''
    for symbol in zbarimage:
        data +=symbol.data
    print(data)
    return data
    
#detect()                   

python3 使用pyzbar进行识别

// 扫面二维码，写入数据库，写入ｃｓｖ
#coding: utf-8

import cv2
import pyzbar.pyzbar as pyzbar
from PIL import Image
import pymysql

#存入数据库
def database(data):
    db = pymysql.connect(host='localhost',user='root',password='123456',port=3306,db='test',charset='utf8')
    cursor = db.cursor() #创建游标对象
    
    sql_create = 'create table tb2(id varchar(250))'
    cursor.execute(sql_create)

    sql_insert = '''insert into tb2(id) values(%s)'''
    cursor.execute(sql_insert,data)
    db.commit()

    sql_select = 'select * from tb2'
    cursor.execute(sql_selet)
    result = cursor.fetchall()
    for row in result:
        id = row[0]
        print(id)

    cursor.close()
    db.close()
#摄像头识别
def decode(frame):
    #picture 从摄像头获取二维码的注释掉下面一行代码
    frame = Image.open('1.jpg')
#camera
    barcodes = pyzbar.decode(frame)
    data = ''
    for barcode in barcodes:
        data+=barcode.data.decode("utf-8")
    print(data)
    return data

def detect():
    camera = cv2.VideoCapture(0)

    while True:
        ret, frame = camera.read()
        data = decode(frame)
        if data!='':
            database(str(data)) #写入数据库
            with open('data.txt','w') as f:#写入txt文档
                f.write(data)
            break
            #写入csv
             with open('datacsv.csv','w') as f:
                 writer = csv.writer(f)
                 writer.writerow(['坐标',decode(frame)])
                 break

        cv2.waitKey(1)
        cv2.imshow("camera", frame)

    camera.release()
    cv2.destroyAllWindows()
    
if __name__ == '__main__':
   detect()

pip 安装 opencv 教程 https://hotdog29.com/?p=550