如何使用 IronOCR 在 C# 中讀取 BARCODE 與 QR 碼

// Apply filters to improve QR code readability
ocrTesseract.Co/nfiguration.ReadBarCodes = true;
var input = new OcrImageInput("qr-code-scan.jpg");
input.DeNoise();
input.Sharpen();
input.EnhanceResolution();

var result = ocrTesseract.Read(input);

' Apply filters to improve QR code readability
ocrTesseract.Configuration.ReadBarCodes = True
Dim input As New OcrImageInput("qr-code-scan.jpg")
input.DeNoise()
input.Sharpen()
input.EnhanceResolution()

Dim result = ocrTesseract.Read(input)

// Enhanced QR code reading with preprocessing
var ocrTesseract = new IronTesseract();
ocrTesseract.Co/nfiguration.ReadBarCodes = true;

// Configure for better QR detection
var input = new OcrImageInput("document-with-qr.pdf");
input.TargetDPI = 300; // Ensure sufficient resolution
input.Binarize(); // Convert to black and white
input.DeNoise(); // Remove image artifacts

var result = ocrTesseract.Read(input);

Imports IronOcr

' Enhanced QR code reading with preprocessing
Dim ocrTesseract As New IronTesseract()
ocrTesseract.Configuration.ReadBarCodes = True

' Configure for better QR detection
Dim input As New OcrImageInput("document-with-qr.pdf")
input.TargetDPI = 300 ' Ensure sufficient resolution
input.Binarize() ' Convert to black and white
input.DeNoise() ' Remove image artifacts

Dim result = ocrTesseract.Read(input)

// Process multi-page documents efficiently
using var pdfInput = new OcrPdfInput("multi-page-qr-document.pdf");
pdfInput.TargetDPI = 300;

var results = ocrTesseract.Read(pdfInput);
foreach (var page in results.Pages)
{
    Console.WriteLine($"Page {page.PageNumber}:");
    foreach (var barcode in page.Barcodes)
    {
        Console.WriteLine($"  QR Code: {barcode.Value}");
        Console.WriteLine($"  Location: X={barcode.X}, Y={barcode.Y}");
    }
}

Imports System

' Process multi-page documents efficiently
Using pdfInput As New OcrPdfInput("multi-page-qr-document.pdf")
    pdfInput.TargetDPI = 300

    Dim results = ocrTesseract.Read(pdfInput)
    For Each page In results.Pages
        Console.WriteLine($"Page {page.PageNumber}:")
        For Each barcode In page.Barcodes
            Console.WriteLine($"  QR Code: {barcode.Value}")
            Console.WriteLine($"  Location: X={barcode.X}, Y={barcode.Y}")
        Next
    Next
End Using

// Asynchronous QR code reading
var result = await ocrTesseract.ReadAsync(imageInput);

' Asynchronous QR code reading
Dim result = Await ocrTesseract.ReadAsync(imageInput)

result.SaveAsHighlightedImage("qr-detection-debug.png");

result.SaveAsHighlightedImage("qr-detection-debug.png")

// Process multiple documents in parallel
var documents = new[] { "doc1.pdf", "doc2.pdf", "doc3.pdf" };
var results = documents.AsParallel().Select(doc =>
{
    var tesseract = new IronTesseract();
    tesseract.Co/nfiguration.ReadBarCodes = true;
    return tesseract.Read(new OcrPdfInput(doc));
}).ToList();

Imports IronTesseract

' Process multiple documents in parallel
Dim documents = {"doc1.pdf", "doc2.pdf", "doc3.pdf"}
Dim results = documents.AsParallel().Select(Function(doc)
    Dim tesseract = New IronTesseract()
    tesseract.Configuration.ReadBarCodes = True
    Return tesseract.Read(New OcrPdfInput(doc))
End Function).ToList()

// Implement cancellation for large batch processing
using var cts = new CancellationTokenSource();
ocrTesseract.Co/nfiguration.CancellationToken = cts.Token;

// Cancel if processing takes too long
cts.CancelAfter(TimeSpan.FromMinutes(5));

Imports System.Threading

' Implement cancellation for large batch processing
Using cts As New CancellationTokenSource()
    ocrTesseract.Configuration.CancellationToken = cts.Token

    ' Cancel if processing takes too long
    cts.CancelAfter(TimeSpan.FromMinutes(5))
End Using

// Export results with embedded barcode values
result.SaveAsSearchablePdf("output-with-barcodes.pdf");

' Export results with embedded barcode values
result.SaveAsSearchablePdf("output-with-barcodes.pdf")