Windows OCR 引擎與 Tesseract 的比較 (OCR 功能比較)

using System;
using System.IO;
using System.Text;
using System.Threading.Tasks;
class Program
{
    static async Task Main(string [] args)
    {
        // Provide the path to the image file
        string imagePath = "sample.png";
        try
        {
            // Instantiate the program class
            Program program = new Program();
            // Call the ExtractText method to extract text from the image
            string extractedText = await program.ExtractText(imagePath);
            // Display the extracted text
            Console.WriteLine("Extracted Text:");
            Console.WriteLine(extractedText);
        }
        catch (Exception ex)
        {
            Console.WriteLine("An error occurred: " + ex.Message);
        }
    }
    public async Task<string> ExtractText(string image)
    {
        // Initialize StringBuilder to store extracted text
        StringBuilder text = new StringBuilder();
        try
        {
            // Open the image file stream
            using (var fileStream = System.IO.File.OpenRead(image))
            {
                Console.WriteLine("Extracted Text:");
                // Create a BitmapDecoder from the image file stream
                var bmpDecoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(fileStream.AsRandomAccessStream());
                // Get the software bitmap from the decoder
                var softwareBmp = await bmpDecoder.GetSoftwareBitmapAsync();
                // Create an OCR engine from user profile languages
                var ocrEngine = Windows.Media.Ocr.OcrEngine.TryCreateFromUserProfileLanguages();
                // Recognize text from the software bitmap
                var ocrResult = await ocrEngine.RecognizeAsync(softwareBmp);
                // Append each line of recognized text to the StringBuilder
                foreach (var line in ocrResult.Lines)
                {
                    text.AppendLine(line.Text);
                }
            }
        }
        catch (Exception ex)
        {
            throw ex; // Propagate the exception
        }
        // Return the extracted text
        return text.ToString();
    }
}

Imports System
Imports System.IO
Imports System.Text
Imports System.Threading.Tasks
Friend Class Program
	Shared Async Function Main(ByVal args() As String) As Task
		' Provide the path to the image file
		Dim imagePath As String = "sample.png"
		Try
			' Instantiate the program class
			Dim program As New Program()
			' Call the ExtractText method to extract text from the image
			Dim extractedText As String = Await program.ExtractText(imagePath)
			' Display the extracted text
			Console.WriteLine("Extracted Text:")
			Console.WriteLine(extractedText)
		Catch ex As Exception
			Console.WriteLine("An error occurred: " & ex.Message)
		End Try
	End Function
	Public Async Function ExtractText(ByVal image As String) As Task(Of String)
		' Initialize StringBuilder to store extracted text
		Dim text As New StringBuilder()
		Try
			' Open the image file stream
			Using fileStream = System.IO.File.OpenRead(image)
				Console.WriteLine("Extracted Text:")
				' Create a BitmapDecoder from the image file stream
				Dim bmpDecoder = Await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(fileStream.AsRandomAccessStream())
				' Get the software bitmap from the decoder
				Dim softwareBmp = Await bmpDecoder.GetSoftwareBitmapAsync()
				' Create an OCR engine from user profile languages
				Dim ocrEngine = Windows.Media.Ocr.OcrEngine.TryCreateFromUserProfileLanguages()
				' Recognize text from the software bitmap
				Dim ocrResult = Await ocrEngine.RecognizeAsync(softwareBmp)
				' Append each line of recognized text to the StringBuilder
				For Each line In ocrResult.Lines
					text.AppendLine(line.Text)
				Next line
			End Using
		Catch ex As Exception
			Throw ex ' Propagate the exception
		End Try
		' Return the extracted text
		Return text.ToString()
	End Function
End Class

using Patagames.Ocr;
using (var api = OcrApi.Create())
{
    api.Init(Patagames.Ocr.Enums.Languages.English);
    string plainText = api.GetTextFromImage(@"C:\Users\buttw\source\repos\ironqr\ironqr\bin\Debug\net5.0\Iron.png");
    Console.WriteLine(plainText);
}

Imports Patagames.Ocr
Using api = OcrApi.Create()
	api.Init(Patagames.Ocr.Enums.Languages.English)
	Dim plainText As String = api.GetTextFromImage("C:\Users\buttw\source\repos\ironqr\ironqr\bin\Debug\net5.0\Iron.png")
	Console.WriteLine(plainText)
End Using

using IronOcr;
var ocr = new IronTesseract();
ocr.Language = OcrLanguage.English;
var result = ocr.Read("C:\\Users\\buttw\\source\\repos\\ironqr\\ironqr\\bin\\Debug\\net5.0\\Iron.png");
Console.WriteLine(result.Text);

Imports IronOcr
Private ocr = New IronTesseract()
ocr.Language = OcrLanguage.English
Dim result = ocr.Read("C:\Users\buttw\source\repos\ironqr\ironqr\bin\Debug\net5.0\Iron.png")
Console.WriteLine(result.Text)