环境：

python 3.7

Win7

依赖包安装：

pip install pillow

pip install opencv-python

pip install opencv-contrib-python

pip install numpy

pip instal pyzbar

首先使用cv2打开摄像头进行测试

import numpy as np

import cv2

capture = cv2.VideoCapture(0,cv2.CAP_DSHOW)

capture.set(3,640)

capture.set(4,480)

while True:

# 读取摄像头中的图像，ok为是否读取成功的判断参数

ret,img = capture.read()

cv2.imshow('frame', img)

k = cv2.waitKey(1)

if k == 27: # 'ESC'关闭

break

如果看到屏幕出现一个窗口，上面显示着你的摄像头所拍摄到的画面说明测试成功

然后就直接上代码：

#written by DY

#http://dyblog.tk

#e-mail:duyun888888@qq.com

import cv2

from PIL import Image, ImageDraw, ImageFont

import csv

import pyzbar.pyzbar as pyzbar

import numpy

import time

#-----------------time----------

time1 = (time.strftime("%Y!%m@%d(%H*%M)%S`", time.localtime()))

time2 = time1.replace('!', '年')

time3 = time2.replace('@', '月')

time4 = time3.replace('(', '日')

time5 = time4.replace('*', '时')

time6 = time5.replace(')', '分')

timenow = time6.replace('`', '秒')

#-----------------time done----

barcodeData1 = ''

found = set()

capture = cv2.VideoCapture(0,cv2.CAP_DSHOW)

Files = "qrcode+barcode.dat"#新建一个日志，方便查阅(不需要可以删除)

while(1):

ret,frame = capture.read()

test = pyzbar.decode(frame)

gray = cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)

barcodes = pyzbar.decode(gray)

for barcode in barcodes:

(x, y, w, h) = barcode.rect

cv2.rectangle(frame, (x, y), (x + w, y + h), (255, 255, 0), 2)

barcodeData = barcode.data.decode("utf-8")

barcodeType = barcode.type

if barcodeData=='' or barcodeData!=barcodeData1:

barcodeData1 = barcodeData

#======================可以不需要，这是在图片上进行标注，里面采用了字体文件==============================

img_PIL = Image.fromarray(cv2.cvtColor(frame, cv2.COLOR_BGR2RGB))

font = ImageFont.truetype('arialbd.ttf', 25)#前面是字体文件，后面是字号

fillColor = (0,255,0)

position = (x, y-25)

strl = barcodeData

draw = ImageDraw.Draw(img_PIL)

draw.text(position, strl,font=font,fill=fillColor)

img_PIL.save('Identification_results.jpg','jpeg')#保存一张标记过的图片

#====================================================

print("Recognize result>>> type： {0} content： {1}".format(barcodeType, barcodeData))

else:

pass

if barcodeType not in found or barcodeData not in found:

with open(Files,'a+') as w:

csv_write = csv.writer(w)

date = ['类型：'+barcodeType+' 识别结果：'+barcodeData+' 时间：'+timenow]

csv_write.writerow(date)

found.add(barcodeData)

cv2.imshow('qrcode+barcode',frame)

k = cv2.waitKey(1)

if k == 27:

break

#written by DY

#http://dyblog.tk

#e-mail:duyun888888@qq.com

效果如图所示：