超过 2 GB 的大 TIFF 文件无法加载

dotnet add package Magick.NET-Q16-AnyCPU

var inputPath = "input.tiff";
var pagesPerChunk = 100;
using var allPages = new MagickImageCollection(inputPath);
int chunkNumber = 1;
for (int i = 0; i < allPages.Count; i += pagesPerChunk)
{
    using var chunk = new MagickImageCollection();
    for (int j = i; j < Math.Min(i + pagesPerChunk, allPages.Count); j++)
    {
        chunk.Add(allPages[j].Clone());
    }
    foreach (var image in chunk)
    {
        image.SetCompression(CompressionMethod.LZW);
    }
    var chunkBytes = chunk.ToByteArray();
    using (var ocrInput = new OcrInput())
    {
        ocrInput.LoadImage(chunkBytes);
        var pages = ocrInput.GetPages().ToList();
        Console.WriteLine($"Loaded pages: {pages.Count}");
        var result = new IronTesseract().Read(ocrInput);
        Console.WriteLine("OCR Text Length: " + (result.Text?.Length ?? 0));
    }
    Console.WriteLine($"Chunk {chunkNumber} processed");
    chunkNumber++;
}

Imports System
Imports System.Linq
Imports ImageMagick

Dim inputPath As String = "input.tiff"
Dim pagesPerChunk As Integer = 100
Using allPages As New MagickImageCollection(inputPath)
    Dim chunkNumber As Integer = 1
    For i As Integer = 0 To allPages.Count - 1 Step pagesPerChunk
        Using chunk As New MagickImageCollection()
            For j As Integer = i To Math.Min(i + pagesPerChunk, allPages.Count) - 1
                chunk.Add(allPages(j).Clone())
            Next
            For Each image In chunk
                image.SetCompression(CompressionMethod.LZW)
            Next
            Dim chunkBytes = chunk.ToByteArray()
            Using ocrInput As New OcrInput()
                ocrInput.LoadImage(chunkBytes)
                Dim pages = ocrInput.GetPages().ToList()
                Console.WriteLine($"Loaded pages: {pages.Count}")
                Dim result = New IronTesseract().Read(ocrInput)
                Console.WriteLine("OCR Text Length: " & If(result.Text?.Length, 0))
            End Using
        End Using
        Console.WriteLine($"Chunk {chunkNumber} processed")
        chunkNumber += 1
    Next
End Using