Dynamsoft Barcode Reader SDK一款多功能的條碼讀取控件，只需要幾行代碼就可以將條碼讀取功能嵌入到Web或桌面應(yīng)用程序。這可以節(jié)省數(shù)月的開發(fā)時間和成本。能支持多種圖像文件格式以及從攝像機(jī)或掃描儀獲取的DIB格式。使用Dynamsoft Barcode Reader SDK，你可以創(chuàng)建強(qiáng)大且實用的條形碼掃描儀軟件，以滿足你的業(yè)務(wù)需求。

點擊下載Dynamsoft Barcode Reader最新版

有人可能對基于Intel的Python應(yīng)用程序能否很好地運行感到好奇Apple M1 Mac。我最近用Dynamsoft Python條形碼SDK進(jìn)行了測試，該SDK使用本機(jī)x86_64庫和CPython。事實證明，使用pip該工具安裝輪包并運行我的Python條碼讀取器應(yīng)用程序沒有任何問題。

安裝Pip和Python條形碼轉(zhuǎn)盤軟件包

當(dāng)您打開終端應(yīng)用程序并Python3第一次輸入時，將彈出一個提示對話框，用于安裝命令行開發(fā)人員工具。

curl //bootstrap.pypa.io/get-pip.py -o get-pip.py
python3 get-pip.py 

python3 -m pip install dbr

% file $(which python3)
/usr/bin/python3: Mach-O universal binary with 2 architectures: [x86_64:Mach-O 64-bit executable x86_64] [arm64e:Mach-O 64-bit executable arm64e]
/usr/bin/python3 (for architecture x86_64): Mach-O 64-bit executable x86_64
/usr/bin/python3 (for architecture arm64e): Mach-O 64-bit executable arm64e

arch -x86_64 $(which python3) -m pip install dbr

在Apple M1 Mac上構(gòu)建基于網(wǎng)絡(luò)攝像頭的Python條形碼閱讀器

安裝OpenCV-Python以捕獲網(wǎng)絡(luò)攝像頭視頻流：

arch -x86_64 $(which python3) -m pip opencv-python

import cv2 as cv
cap = cv.VideoCapture(0)
while True:
    _ret, frame = cap.read()

    if not _ret:
        break
        
    cv.imshow('BarcodeReader', frame)

    ch = cv.waitKey(1)
    # ESC
    if ch == 27:
        break

from dbr import *
from multiprocessing import Process, Queue

def process_barcode_frame(license, frameQueue, resultQueue):
    # Create Dynamsoft Barcode Reader
    reader = BarcodeReader()
    # Apply for a trial license: //www.dynamsoft.com/customer/license/trialLicense
    reader.init_license(license)
    settings = reader.get_runtime_settings()
    settings.max_algorithm_thread_count = 1
    reader.update_runtime_settings(settings)

    while True:
        results = None

        try:
            frame = frameQueue.get(False, 10)
            if type(frame) is str:
                break
        except:
            continue

        try:
            frameHeight, frameWidth, channel = frame.shape[:3]
            results = reader.decode_buffer_manually(np.array(frame).tobytes(), frameWidth, frameHeight, frame.strides[0], EnumImagePixelFormat.IPF_RGB_888)
        except BarcodeReaderError as error:
            print(error)

        try:
            resultQueue.put(results, False, 10)
        except:
            pass

barcodeScanning = Process(target=process_barcode_frame, args=(license, frameQueue, resultQueue))
barcodeScanning.start()

在主要過程中，創(chuàng)建兩個隊列以連續(xù)發(fā)送圖像幀和接收條形碼掃描結(jié)果：

frameQueue = Queue(size)
resultQueue = Queue(size)

while True:
    _ret, frame = cap.read()

    if not _ret:
        break

    try:
        results = resultQueue.get(False, 10)
    except:
        pass
        
    cv.imshow('BarcodeReader', frame)

    # Append a frame to the frame queue
    try:
        frameQueue.put(frame.copy(), False, 10)
    except:
        pass

    ch = cv.waitKey(1)
    # ESC
    if ch == 27:
        break

arch -x86_64 $(which python3) barcode_scanning.py license.txt