Crash in BarcodeDetector

[dlorenz70]

I have tried to decode an image with a barcode but the application crashes with 0xc0000409:

public static void ReadBarcode()
{
    using Mat mat = new(Path.Combine(@"C:\SUSTech-OpenCV-BarcodeTestDataset-master", "bottle.jpg"));
    using var bd = new BarcodeDetector();
    bd.DetectAndDecode(mat, out Point2f[] points, out string[] results, out string[] types);
}

[shimat]

Thank you for the report!

Our basic tests for BarcodeDetector pass without issues (see #1864), so we need a reproduction case to investigate further. Could you share:

1. A minimal code snippet that reliably triggers the crash
2. The image file used (or a similar one that also crashes)
3. Your environment: OS, .NET version, and NuGet package versions

[dlorenz70]

It is strange, but on my PC, a code snippet of your test cases is already crashing:

using var bd = new BarcodeDetector();
using var img = new Mat(30, 30, MatType.CV_8UC1, Scalar.Black);
bd.DetectAndDecode(img, out var points, out var results, out var types);

I use Windows 11, .NET9 (same for .NET8), the latest version of OpenCvSharp (4.13.0.20260330) and I have build a console application.