Accord.Tests.Imaging.SpeededUpRobustFeaturesDetectorTest.ProcessImageTest C# (CSharp) Method

        public void ProcessImageTest()
        {
            // Load an Image
            Bitmap img = Accord.Imaging.Image.Clone(Properties.Resources.sample_trans);

            // Extract the interest points
            var surf = new SpeededUpRobustFeaturesDetector(0.0002f, 5, 2);

            surf.ComputeDescriptors = SpeededUpRobustFeatureDescriptorType.None;

            List<SpeededUpRobustFeaturePoint> points = surf.ProcessImage(img);

            // Describe the interest points
            SpeededUpRobustFeaturesDescriptor descriptor = surf.GetDescriptor();
            descriptor.Compute(points);

            Assert.AreEqual(8, points.Count);

            SpeededUpRobustFeaturePoint p;

            p = points[0];
            Assert.AreEqual(0, p.Laplacian);
            Assert.AreEqual(25.3803387, p.X, 1e-2);
            Assert.AreEqual(14.7987738, p.Y, 1e-2);
            Assert.AreEqual(1.98713827, p.Scale, 1e-2);
            Assert.AreEqual(0.0, p.Response, 1e-2);
            Assert.AreEqual(4.78528404, p.Orientation, 1e-2);

            p = points[1];
            Assert.AreEqual(1, p.Laplacian, 1e-2);
            Assert.AreEqual(20.4856224, p.X, 1e-2);
            Assert.AreEqual(20.4817181, p.Y, 1e-2);
            Assert.AreEqual(1.90549147, p.Scale, 1e-2);
            Assert.AreEqual(0.0, p.Response, 1e-2);
            Assert.AreEqual(4.89748764, p.Orientation, 1e-2);

            p = points[2];
            Assert.AreEqual(0, p.Laplacian, 1e-2);
            Assert.AreEqual(14.7991896, p.X, 1e-2);
            Assert.AreEqual(25.3776169, p.Y, 1e-2);
            Assert.AreEqual(1.9869982, p.Scale, 1e-2);
            Assert.AreEqual(0.0, p.Response, 1e-2);
            Assert.AreEqual(3.07735944, p.Orientation, 1e-2);

            p = points[6];
            Assert.AreEqual(1, p.Laplacian, 1e-2);
            Assert.AreEqual(22.4346638, p.X, 1e-2);
            Assert.AreEqual(41.4026527, p.Y, 1e-2);
            Assert.AreEqual(2.83586049, p.Scale, 1e-2);
            Assert.AreEqual(0.0, p.Response, 1e-2);
            Assert.AreEqual(3.13142157, p.Orientation, 1e-2);


            descriptor.Extended = true;
            descriptor.Invariant = false;
            descriptor.Compute(points);

            p = points[5];
            Assert.AreEqual(1, p.Laplacian, 1e-3);
            Assert.AreEqual(41.4027748, p.X, 1e-3);
            Assert.AreEqual(22.4343891, p.Y, 1e-3);
            Assert.AreEqual(2.83486962, p.Scale, 1e-3);
            Assert.AreEqual(0.0, p.Response, 1e-3);
            Assert.AreEqual(4.72728586, p.Orientation, 1e-3);
        }