|
public ProcessImage ( |
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| image | Source image data to process. | |
| return | List |
|
/// <summary>
/// Features from Accelerated Segment Test (FAST) corners detector.
/// <para>Accord.NET internal call. Please see: <see cref="Accord.Imaging.FastCornersDetector"/> for details.</para>
/// </summary>
/// <param name="im">Image.</param>
/// <param name="threshold">The suppression threshold. Decreasing this value increases the number of points detected by the algorithm.</param>
/// <returns>Interest point locations.</returns>
public static List<IntPoint> CornerFeaturesDetector(this Image<Gray, byte> im, int threshold = 20)
{
FastCornersDetector fast = new FastCornersDetector(threshold);
var points = fast.ProcessImage(im.ToAForgeImage(copyAlways: false, failIfCannotCast: true));
return points;
}
public List <Rg.Point3d> GetFastCorners()
{
Ai.FastCornersDetector corners = new Ai.FastCornersDetector();
if (Threshold >= 0)
{
corners.Threshold = Threshold;
}
return(corners.ProcessImage(bitmap).ToRhinoPoints(bitmap.Height));
}
/// <summary>
/// Features from Accelerated Segment Test (FAST) corners detector.
/// <para>Accord.NET internal call. Please see: <see cref="Accord.Imaging.FastCornersDetector"/> for details.</para>
/// </summary>
/// <param name="im">Image.</param>
/// <param name="threshold">The suppression threshold. Decreasing this value increases the number of points detected by the algorithm.</param>
/// <returns>Interest point locations.</returns>
public static List<Point> CornerFeaturesDetector(this Gray<byte>[,] im, int threshold = 20)
{
FastCornersDetector fast = new FastCornersDetector(threshold);
List<Point> points;
using (var uImg = im.Lock())
{
points = fast.ProcessImage(uImg.AsAForgeImage())
.Select(x => x.ToPoint())
.ToList();
}
return points;
}
public void ProcessImageTest2()
{
UnmanagedImage image = UnmanagedImage.FromManagedImage(Accord.Imaging.Image.Clone(Properties.Resources.lena512));
FastCornersDetector target = new FastCornersDetector();
target.Suppress = true;
target.Threshold = 40;
List<IntPoint> actual = target.ProcessImage(image);
Assert.AreEqual(324, actual.Count);
Assert.AreEqual(506, actual[0].X);
Assert.AreEqual(4, actual[0].Y);
Assert.AreEqual(152, actual[6].X);
Assert.AreEqual(75, actual[6].Y);
Assert.AreEqual(416, actual[11].X);
Assert.AreEqual(115, actual[11].Y);
Assert.AreEqual(140, actual[65].X);
Assert.AreEqual(246, actual[65].Y);
Assert.AreEqual(133, actual[73].X);
Assert.AreEqual(253, actual[73].Y);
}
public void ProcessImageTest()
{
UnmanagedImage image = UnmanagedImage.FromManagedImage(Accord.Imaging.Image.Clone(Properties.Resources.sample_black));
FastCornersDetector target = new FastCornersDetector();
target.Suppress = false;
target.Threshold = 20;
List<IntPoint> actual = target.ProcessImage(image);
Assert.AreEqual(237, actual.Count);
Assert.AreEqual(404, actual[0].X);
Assert.AreEqual(35, actual[0].Y);
Assert.AreEqual(407, actual[6].X);
Assert.AreEqual(36, actual[6].Y);
Assert.AreEqual(407, actual[11].X);
Assert.AreEqual(38, actual[11].Y);
Assert.AreEqual(55, actual[65].X);
Assert.AreEqual(135, actual[65].Y);
Assert.AreEqual(103, actual[73].X);
Assert.AreEqual(137, actual[73].Y);
}
public void ProcessImageTest()
{
UnmanagedImage image = UnmanagedImage.FromManagedImage(Properties.Resources.sample_black);
FastCornersDetector target = new FastCornersDetector();
target.Suppress = false;
target.Threshold = 20;
List<IntPoint> actual = target.ProcessImage(image);
/*
PointsMarker marker = new PointsMarker(actual.ToArray());
marker.Width = 3;
marker.MarkerColor = Color.FromArgb(255, 0, 0);
var markers = marker.Apply(image);
ImageBox.Show(markers.ToManagedImage(), PictureBoxSizeMode.Zoom);
*/
Assert.AreEqual(237, actual.Count);
Assert.AreEqual(404, actual[0].X);
Assert.AreEqual(35, actual[0].Y);
Assert.AreEqual(407, actual[6].X);
Assert.AreEqual(36, actual[6].Y);
Assert.AreEqual(407, actual[11].X);
Assert.AreEqual(38, actual[11].Y);
Assert.AreEqual(55, actual[65].X);
Assert.AreEqual(135, actual[65].Y);
Assert.AreEqual(103, actual[73].X);
Assert.AreEqual(137, actual[73].Y);
}
public void ProcessImageTest2()
{
UnmanagedImage image = UnmanagedImage.FromManagedImage(Properties.Resources.lena512);
FastCornersDetector target = new FastCornersDetector();
target.Suppress = true;
target.Threshold = 40;
List<IntPoint> actual = target.ProcessImage(image);
/*
PointsMarker marker = new PointsMarker(actual.ToArray());
marker.Width = 3;
marker.MarkerColor = Color.FromArgb(255, 0, 0);
var markers = marker.Apply(image);
ImageBox.Show(markers.ToManagedImage(), PictureBoxSizeMode.Zoom);
*/
Assert.AreEqual(324, actual.Count);
Assert.AreEqual(506, actual[0].X);
Assert.AreEqual(4, actual[0].Y);
Assert.AreEqual(152, actual[6].X);
Assert.AreEqual(75, actual[6].Y);
Assert.AreEqual(416, actual[11].X);
Assert.AreEqual(115, actual[11].Y);
Assert.AreEqual(140, actual[65].X);
Assert.AreEqual(246, actual[65].Y);
Assert.AreEqual(133, actual[73].X);
Assert.AreEqual(253, actual[73].Y);
}
