Microsoft OCR 工具（C# 替代方案）

using IronOcr;
using System;

var ocrTesseract = new IronTesseract();

using (var ocrInput = new OcrInput())
{
    // Add the entire PDF for OCR processing
    ocrInput.AddPdf("example.pdf");

    // Alternatively, OCR selected page numbers from a password-protected PDF
    ocrInput.AddPdfPages("example.pdf", new [] { 1, 2, 3 }, "password");

    // Perform OCR and get the result
    var ocrResult = ocrTesseract.Read(ocrInput);

    // Output the extracted text
    Console.WriteLine(ocrResult.Text);
}

Imports IronOcr
Imports System

Private ocrTesseract = New IronTesseract()

Using ocrInput As New OcrInput()
	' Add the entire PDF for OCR processing
	ocrInput.AddPdf("example.pdf")

	' Alternatively, OCR selected page numbers from a password-protected PDF
	ocrInput.AddPdfPages("example.pdf", { 1, 2, 3 }, "password")

	' Perform OCR and get the result
	Dim ocrResult = ocrTesseract.Read(ocrInput)

	' Output the extracted text
	Console.WriteLine(ocrResult.Text)
End Using

using IronOcr;
using System;

var ocrTesseract = new IronTesseract();
ocrTesseract.Configuration.ReadBarCodes = true;

// Read barcodes from an image file
using (var ocrInput = new OcrInput(@"images\imageWithBarcode.png"))
{
    var ocrResult = ocrTesseract.Read(ocrInput);

    // Iterate through the detected barcodes and print their values
    foreach (var barcode in ocrResult.Barcodes)
    {
        Console.WriteLine(barcode.Value);
    }
}

Imports IronOcr
Imports System

Private ocrTesseract = New IronTesseract()
ocrTesseract.Configuration.ReadBarCodes = True

' Read barcodes from an image file
Using ocrInput As New OcrInput("images\imageWithBarcode.png")
	Dim ocrResult = ocrTesseract.Read(ocrInput)

	' Iterate through the detected barcodes and print their values
	For Each barcode In ocrResult.Barcodes
		Console.WriteLine(barcode.Value)
	Next barcode
End Using

using IronOcr;
using System;

var ocrTesseract = new IronTesseract();

// Process a noisy image by deskewing and denoising it
using (var ocrInput = new OcrInput(@"images\image.png"))
{
    ocrInput.Deskew(); // Corrects for skewness in the image
    ocrInput.DeNoise(); // Reduces visual noise for better recognition

    // Perform OCR and print the text
    var ocrResult = ocrTesseract.Read(ocrInput);
    Console.WriteLine(ocrResult.Text);
}

Imports IronOcr
Imports System

Private ocrTesseract = New IronTesseract()

' Process a noisy image by deskewing and denoising it
Using ocrInput As New OcrInput("images\image.png")
	ocrInput.Deskew() ' Corrects for skewness in the image
	ocrInput.DeNoise() ' Reduces visual noise for better recognition

	' Perform OCR and print the text
	Dim ocrResult = ocrTesseract.Read(ocrInput)
	Console.WriteLine(ocrResult.Text)
End Using