incorrect prediction bounding boxes

Was fine in the windows only/System.Drawing version. Added to your test case:

[Fact]
public void TestYolov9()
{
    using var yolo = new Yolov9("./assets/yolov9-c.onnx"); //yolov9 模型,需要 nms 操作

    // setup labels of onnx model 
    yolo.SetupYoloDefaultLabels();   // use custom trained model should use your labels like: yolo.SetupLabels(string[] labels)
    Assert.NotNull(yolo);

    foreach (var tuple in _testImages)
    {
        var ret = yolo.Predict(tuple.image, useNumpy: false);
        CheckResult(ret, tuple.label);

        using SKCanvas canvas = new(tuple.image);
        using var paint = new SKPaint
        {
            Style = SKPaintStyle.Stroke,
            Color = SKColors.Blue,
            StrokeWidth = 3,
        };
        foreach (var prediction in ret)
        {
            canvas.DrawRect(prediction.Rectangle, paint);
        }
        using var data = tuple.image.Encode(SKEncodedImageFormat.Png, 100);
        using var stream = File.OpenWrite($"{tuple.label} result.png");
        data.SaveTo(stream);
    }
}

cat result dog result

ivilson / Yolov7net

incorrect prediction bounding boxes #33