環境：

• python 3.7
• Win7

依賴包安裝：

 pip install pillow

 pip install opencv-python

 pip install opencv-contrib-python

 pip install numpy

 pip instal pyzbar

首先使用cv2開啟攝像頭進行測試

import numpy as np

import cv2

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

capture.set(3,640)

capture.set(4,480)

while True:

    # 讀取攝像頭中的影象，ok為是否讀取成功的判斷引數
 

    ret,img = capture.read()

    cv2.imshow('frame', img)

    k = cv2.waitKey(1)

    if k == 27:    # 'ESC'關閉

        break

如果看到螢幕出現一個視窗，上面顯示著你的攝像頭所拍攝到的畫面說明測試成功

然後就直接上程式碼：

#written by DY
#http://dyblog.tk
#e-mail:[email protected]

import cv2

from PIL import Image, ImageDraw, ImageFont

import csv

import pyzbar.pyzbar as pyzbar
 

import numpy

import time

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

time1 = (time.strftime("%Y!%[email protected]%d(%H*%M)%S`", time.localtime()))

time2 = time1.replace('!', '年')

time3 = time2.replace('@', '月')

time4 = time3.replace('(', '日')

time5 = time4.replace('*', '時')

time6 = time5.replace(')', '分')
 

timenow = time6.replace('`', '秒')

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

barcodeData1 = ''

found = set()

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

Files = "qrcode+barcode.dat"#新建一個日誌，方便查閱（不需要可以刪除）

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，這是在圖片上進行標註，裡面採用了字型檔案==============================

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

            font = ImageFont.truetype('arialbd.ttf', 25)#前面是字型檔案，後面是字號

            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')#儲存一張標記過的圖片

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

            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 = ['型別：'+barcodeType+'  識別結果：'+barcodeData+'   時間：'+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:[email protected]

效果如圖所示：