using IronBarCode; using System.Drawing; // Creating a barcode is as simple as: var myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8); // And save our barcode as in image: myBarcode.SaveAsImage("EAN8.jpeg"); Image myBarcodeImage = myBarcode.Image; // Can be used as Image Bitmap myBarcodeBitmap = myBarcode.ToBitmap(); // Can be used as Bitmap // Reading a barcode is easy with IronBarcode: var resultFromFile = BarcodeReader.Read(@"file/barcode.png"); // From a file var resultFromBitMap = BarcodeReader.Read(new Bitmap("barcode.bmp")); // From a bitmap var resultFromImage = BarcodeReader.Read(Image.FromFile("barcode.jpg")); // From an image var resultFromPdf = BarcodeReader.ReadPdf(@"file/mydocument.pdf"); // From PDF use ReadPdf // After creating a barcode, we may choose to resize and save which is easily done with: var myNewBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8); myNewBarcode.ResizeTo(400, 100); myNewBarcode.SaveAsImage("myBarcodeResized.jpeg"); // To set more options and optimization with your Barcode Reading, // Please utilize the BarcodeReaderOptions paramter of read: var myOptionsExample = new BarcodeReaderOptions { // Choose a speed from: Faster, Balanced, Detailed, ExtremeDetail // There is a tradeoff in performance as more Detail is set Speed = ReadingSpeed.Balanced, // Reader will stop scanning once a barcode is found, unless set to true ExpectMultipleBarcodes = true, // By default, all barcode formats are scanned for. // Specifying one or more, performance will increase. ExpectBarcodeTypes = BarcodeEncoding.AllOneDimensional, // Utilizes multiple threads to reads barcodes from multiple images in parallel. Multithreaded = true, // Maximum threads for parallel. Default is 4 MaxParallelThreads = 2, // The area of each image frame in which to scan for barcodes. // Will improve performance significantly and avoid unwanted results and avoid noisy parts of the image. CropArea = new Rectangle(), // Special Setting for Code39 Barcodes. // If a Code39 barcode is detected. Try to use extended mode for the full ASCII Character Set UseCode39ExtendedMode = true }; // And, apply: var results = BarcodeReader.Read("barcode.png", myOptionsExample);

using IronBarCode; using System.Drawing; /*** CREATING BARCODE IMAGES ***/ // Shorthand:: Create and save a barcode in a single line of code BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8).ResizeTo(400, 100).SaveAsImage("EAN8.jpeg"); /***** IN-DEPTH BARCODE CREATION OPTIONS *****/ // BarcodeWriter.CreateBarcode creates a GeneratedBarcode which can be styles and exported as an Image object or File GeneratedBarcode MyBarCode = BarcodeWriter.CreateBarcode("Any Number, String or Binary Value", BarcodeWriterEncoding.Code128); // Style the Barcode in a fluent LINQ style fashion MyBarCode.ResizeTo(300, 150).SetMargins(20).AddAnnotationTextAboveBarcode("Example EAN8 Barcode").AddBarcodeValueTextBelowBarcode(); MyBarCode.ChangeBackgroundColor(Color.LightGoldenrodYellow); // Save MyBarCode as an image file MyBarCode.SaveAsImage("MyBarCode.png"); MyBarCode.SaveAsGif("MyBarCode.gif"); MyBarCode.SaveAsHtmlFile("MyBarCode.html"); MyBarCode.SaveAsJpeg("MyBarCode.jpg"); MyBarCode.SaveAsPdf("MyBarCode.Pdf"); MyBarCode.SaveAsPng("MyBarCode.png"); MyBarCode.SaveAsTiff("MyBarCode.tiff"); MyBarCode.SaveAsWindowsBitmap("MyBarCode.bmp"); // Save MyBarCode as a .NET native objects Image MyBarCodeImage = MyBarCode.Image; Bitmap MyBarCodeBitmap = MyBarCode.ToBitmap(); byte[] PngBytes = MyBarCode.ToPngBinaryData(); using (System.IO.Stream PdfStream = MyBarCode.ToPdfStream()) { // Stream barcode image output also works for GIF,JPEG, PDF, PNG, BMP and TIFF } // Save MyBarCode as HTML files and tags MyBarCode.SaveAsHtmlFile("MyBarCode.Html"); string ImgTagForHTML = MyBarCode.ToHtmlTag(); string DataURL = MyBarCode.ToDataUrl(); // Save MyBarCode to a new PDF, or stamp it in any position on any page(s) of an existing Document MyBarCode.SaveAsPdf("MyBarCode.Pdf"); MyBarCode.StampToExistingPdfPage("ExistingPDF.pdf", 200, 50, 1); // position 200x50 on page 1 MyBarCode.StampToExistingPdfPages("ExistingPDF.pdf", 200, 50, new[] { 1, 2, 3 }, "Password123"); // multiple pages of an encrypted PDF

using IronBarCode; using System; using System.Drawing; /*** STYLING GENERATED BARCODES ***/ // BarcodeWriter.CreateBarcode creates a GeneratedBarcode object which allows the barcode to be styled and annotated. GeneratedBarcode MyBarCode = BarcodeWriter.CreateBarcode("Iron Software", BarcodeWriterEncoding.QRCode); // Any text (or commonly, the value of the barcode) can be added to the image in a default or specified font. // Text positions are automatically centered, above or below. Fonts that are too large for a given image are automatically scaled down. MyBarCode.AddBarcodeValueTextBelowBarcode(); MyBarCode.AddAnnotationTextAboveBarcode("This is My Barcode", new Font(new FontFamily("Arial"), 12, FontStyle.Regular, GraphicsUnit.Pixel), Color.DarkSlateBlue); // Resize, add Margins and Check final Image Dimensions MyBarCode.ResizeTo(300, 300); // pixels MyBarCode.SetMargins(0, 20, 0, 20); int FinalWidth = MyBarCode.Width; int FinalHeight = MyBarCode.Height; //Recolor the barcode and its background MyBarCode.ChangeBackgroundColor(Color.LightGray); MyBarCode.ChangeBarCodeColor(Color.DarkSlateBlue); if (!MyBarCode.Verify()) { Console.WriteLine("Color contrast should be at least 50% or a barcode may become unreadable. Test using GeneratedBarcode.Verify()"); } // Finally save the result MyBarCode.SaveAsHtmlFile("StyledBarcode.html"); /*** STYLING BARCODES IN A SINGLE LINQ STYLE EXPRESSION ***/ // Fluent API BarcodeWriter.CreateBarcode("https://ironsoftware.com", BarcodeWriterEncoding.Aztec).ResizeTo(250, 250).SetMargins(10).AddBarcodeValueTextAboveBarcode().SaveAsImage("StyledBarcode.png"); /*** STYLING QR CODES WITH LOGO IMAGES OR BRANDING ***/ // Use the QRCodeWriter.CreateQrCodeWithLogo Method instead of BarcodeWriter.CreateBarcode // Logo will automatically be sized appropriately and snapped to the QR grid. var qrCodeLogo = new QRCodeLogo("ironsoftware_logo.png"); GeneratedBarcode myQRCodeWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://ironsoftware.com/", qrCodeLogo); myQRCodeWithLogo.ResizeTo(500, 500).SetMargins(10).ChangeBarCodeColor(Color.DarkGreen); myQRCodeWithLogo.ResizeTo(500, 500).SetMargins(10).ChangeBarCodeColor(Color.DarkGreen); myQRCodeWithLogo.SaveAsPng("QRWithLogo.Png").SaveAsPdf("MyVerifiedQR.html"); // save as 2 formats

條碼工具

QR Code 機器學習（開發者教程）

發佈 2023年8月29日

快速回應 (QR) 代码已成为现代社会不可或缺的一部分，彻底改变了信息共享和访问的方式。这些二维条码由黑白方阵组成，可以使用智能手机相机扫描，快速检索存储的信息，例如URL、联系方式、网站URL、产品详情等。然而，随着技术的发展，QR码的功能也在不断进步。机器学习 (機器學習) 成為增強 QR 碼生成、識別和解碼流程的強大工具，從而提升用戶體驗並提高功能。

信息與數據交換的世界已被 QR 碼和條碼的廣泛使用所改變。這些二維碼提供了快速訪問數位內容的方法，並在各行各業中發揮多種功能。然而，在面對各種多樣化的代碼時，區分 QR 碼和條碼可能會具有挑戰性。然而，透過利用機器學習的力量 (機器學習) 和 .NET/C# 框架，開發者可以創建一個能夠精確分類 QR 碼和條碼的智能系統，從而簡化數據處理並提升用戶體驗。整合 IronBarcode 的解碼功能進一步強化了解決方案，使得從識別出的代碼中提取準確內容成為可能。

在本文中，我們將訓練模型來分類給定的輸入為條碼或 QR 碼，隨後我們將使用 IronBarcode 對輸入代碼進行解碼。

使用 ML.NET 模型生成器進行 QR 碼分類

模型生成器在 Visual Studio 中集成的一個工具，通過提供直觀的界面簡化了構建機器學習模型的過程。我們將使用 Model Builder 創建一個分類模型，以區分 QR 碼和條形碼。分類完成後，我們將集成 IronBarcode 來解碼識別出的代碼。

第一步：數據收集

訓練任何模型的第一步是數據收集。我們需要數據來訓練模型。我已經從网上下載了數據 Kaggle您可以從任何來源下載它，根據您的喜好進行選擇。下載數據集後，創建一個主目錄，並將這兩個數據集放入該主目錄中。數據組織為兩個子目錄：

條形碼
QR碼

QR Code 機器學習（開發者教程）：圖 1

下一步是打開 Visual Studio 並創建一個新的機器學習模型。

步驟 2：在 Visual Studio 中建立專案並新增機器學習模型

在 Visual Studio 中建立您的專案。該專案可以是任何類型，例如 ASP.NET Web API、ASP.NET MVC、WEB Forms 或控制台應用程式。在這個例子中，我使用的是控制台應用程式。從 Solution Explorer 中右鍵點擊專案。選擇新增 > 機器學習模型，如下所示。

QR碼機器學習（開發者教程）：圖2