如何在 python 中将条码扫描器与 tkinter GUI 应用程序集成？

Question

当我运行以下代码时。相机打开，我们可以读取条形码。我需要的是相机窗口保留在我的 Tkinter GUI 应用程序的一侧，而不是弹出。这是代码

from imutils.video import VideoStream
from pyzbar import pyzbar
import argparse
import datetime
from datetime import datetime
import imutils
import time
import cv2
import winsound

frequency = 600  # Set Frequency To 2500 Hertz
duration = 800  # Set Duration To 1000 ms == 1 second

ap = argparse.ArgumentParser()
ap.add_argument("-o", "--output", type=str, default="barcodesData.csv",
                help="path to output CSV file ")
args = vars(ap.parse_args())

print("Starting webcam")

vs = VideoStream(src=0).start()
time.sleep(2.0)
csvWrite = open(args["output"], "w")
found = set()
while True:
    frameData = vs.read()
    frameData = imutils.resize(frameData, width=600)
    barcodes = pyzbar.decode(frameData)
    for barcode in barcodes:
        (x, y, width, height) = barcode.rect
        cv2.rectangle(frameData, (x, y), (x + width, y + height), (0, 0, 255), 2)
        barcodeData = barcode.data.decode("utf-8")
        barcodeType = barcode.type
        textData = "{} ({})".format(barcodeData, barcodeType)
        cv2.putText(frameData, textData, (x, y - 10),
                    cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), 2)
        if barcodeData not in found:
            csvWrite.write("{},{}\n".format(datetime.today().strftime('%Y-%m-%d'),
                                            barcodeData))
            csvWrite.flush()
            found.add(barcodeData)
            winsound.Beep(frequency, duration)
    cv2.imshow("Barcode Scanner", frameData)
    key = cv2.waitKey(1) & 0xFF
    if key == ord("e"):
        break

# close the output CSV file do a bit of cleanup
print("\nWait while we calculate cost...")
csvWrite.close()
cv2.destroyAllWindows()
vs.stop()

time.sleep(1.0)

具体一点。我正在制作一个计费软件，我可以在其中读取产品的条形码并进行计费。相机单独的屏幕很烦人，所以如果相机一直在画布的任何一侧。这样会更快。

Answer 1

我将数据库中每个产品/项目的 ID 编码为 QR 码。当正在寻找该特定项目时，我使用 CV2 来检测和解码 QR 码。

代码如下：

def encode_qr():

    import qrcode

    import random as r

    item_code = r.randint(00000000,99999999)

    data = item_code
    qrfile = "qr_image_name_for_specified_item.png"
    # generate qrcode
    qrimage = qrcode.make(data)
    # save image
    fl = qrimage.save(qrfile)
    print("Done generating qrcode")


def decode_qr():

    import cv2
    filename="qr_image_name_for_specified_item.png" 
    # alternatively webcam cv2.VideoCapture(0)
    # read image 
    image = cv2.imread(filename)

    # initialize qrcode detector

   

    detector = cv2.QRCodeDetector()
    # detect and decode
    info, v_array, binary_qrcode=detector.detectAndDecode(image)
    # if null?
    if v_array is None:
        print("No qrcode detected or probably some technical issues occurred")
    else:
        print("QRCODE data")
        print(info)
        # below i am working with the import sqlite3 as sql3
        sqldb = sql3.connect("your_database.db")
        cur = sqldb.cursor()
        cur.execute("select * from table where ID=?, (info,))
        rows = cur.fetchall()
        for r in rows:
            print(r) # this will loop all the item details with the itemcode
           print(r[1]) # a specific detail with the item_code