如何在 .NET MAUI 中对 iOS 设备执行 OCR

using System;
using IronOcr;
using Microsoft.Maui.Controls;

namespace MAUIIronOCRiOSSample;

public partial class MainPage : ContentPage
{
    // Initialize IronTesseract once in a class
    private IronTesseract ocrTesseract = new IronTesseract();

    public MainPage()
    {
        InitializeComponent();
        // Apply license key
        IronOcr.License.LicenseKey = "IRONOCR-MYLICENSE-KEY-1EF01";
    }

    private async void ReadFileOnImport(object sender, EventArgs e)
    {
        try
        {
            var options = new PickOptions
            {
                PickerTitle = "Please select a file"
            };

            var result = await FilePicker.PickAsync(options);
            if (result != null)
            {
                using var stream = await result.OpenReadAsync();

                // Instantiate OcrInput
                using var ocrInput = new OcrInput();

                // Load image stream
                ocrInput.LoadImage(stream);

                // Perform OCR
                var ocrResult = ocrTesseract.Read(ocrInput);
                OutputText.Text = ocrResult.Text;
            }
        }
        catch (Exception ex)
        {
            // Handle exceptions
            System.Diagnostics.Debug.WriteLine(ex);
        }
    }
}

Imports System
Imports IronOcr
Imports Microsoft.Maui.Controls

Namespace MAUIIronOCRiOSSample

	Partial Public Class MainPage
		Inherits ContentPage

		' Initialize IronTesseract once in a class
		Private ocrTesseract As New IronTesseract()

		Public Sub New()
			InitializeComponent()
			' Apply license key
			IronOcr.License.LicenseKey = "IRONOCR-MYLICENSE-KEY-1EF01"
		End Sub

		Private Async Sub ReadFileOnImport(ByVal sender As Object, ByVal e As EventArgs)
			Try
				Dim options = New PickOptions With {.PickerTitle = "Please select a file"}

				Dim result = Await FilePicker.PickAsync(options)
				If result IsNot Nothing Then
					Dim stream = Await result.OpenReadAsync()

					' Instantiate OcrInput
					Dim ocrInput As New OcrInput()

					' Load image stream
					ocrInput.LoadImage(stream)

					' Perform OCR
					Dim ocrResult = ocrTesseract.Read(ocrInput)
					OutputText.Text = ocrResult.Text
				End If
			Catch ex As Exception
				' Handle exceptions
				System.Diagnostics.Debug.WriteLine(ex)
			End Try
		End Sub
	End Class
End Namespace