Program.cs

using SixLabors.Fonts;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.Drawing.Processing;
using SixLabors.ImageSharp.PixelFormats;
using SixLabors.ImageSharp.Processing;
using System;
using Yolov5Net.Scorer;
using Yolov5Net.Scorer.Models;

using var image = await Image.LoadAsync<Rgba32>("Assets/test.jpg");
{
    using var scorer = new YoloScorer<YoloCocoP5Model>("Assets/Weights/yolov5n.onnx");
    {
        var predictions = scorer.Predict(image);

        var font = new Font(new FontCollection().Add("Assets/consolas.ttf"), 16);

        foreach (var prediction in predictions) // draw predictions
        {
            var score = Math.Round(prediction.Score, 2);

            var (x, y) = (prediction.Rectangle.Left - 3, prediction.Rectangle.Top - 23);

            image.Mutate(a => a.DrawPolygon(new Pen(prediction.Label.Color, 1),
                new PointF(prediction.Rectangle.Left, prediction.Rectangle.Top),
                new PointF(prediction.Rectangle.Right, prediction.Rectangle.Top),
                new PointF(prediction.Rectangle.Right, prediction.Rectangle.Bottom),
                new PointF(prediction.Rectangle.Left, prediction.Rectangle.Bottom)
            ));

            image.Mutate(a => a.DrawText($"{prediction.Label.Name} ({score})",
                font, prediction.Label.Color, new PointF(x, y)));
        }

        await image.SaveAsync("Assets/result.jpg");
    }
}