private void initialize(HarrisCornerMeasure measure, float k,
float threshold, double sigma, int suppression, int size)
{
this.measure = measure;
this.threshold = threshold;
this.k = k;
this.r = suppression;
this.sigma = sigma;
this.size = size;
createGaussian();
}
/// <summary>
/// Harris Corners Detector.
/// <para>Accord.NET internal call. Please see: <see cref="Accord.Imaging.HarrisCornersDetector"/> for details.</para>
/// </summary>
/// <param name="im">Image.</param>
/// <param name="measure">Corners measures.</param>
/// <param name="threshold">Harris threshold.</param>
/// <param name="sigma">Gaussian smoothing sigma.</param>
/// <param name="suppression">Non-maximum suppression window radius.</param>
/// <returns>Interest point locations.</returns>
public static List <IntPoint> HarrisCorners <TDepth>(this Gray <byte>[,] im, HarrisCornerMeasure measure = HarrisCornerMeasure.Harris, float threshold = 20000f, double sigma = 1.2, int suppression = 3)
{
HarrisCornersDetector harris = new HarrisCornersDetector(measure, threshold, sigma, suppression);
List <IntPoint> points;
using (var uImg = im.Lock())
{
points = harris.ProcessImage(uImg.AsAForgeImage());
}
return(points);
}
private void initialize(HarrisCornerMeasure measure, float k,
float threshold, double sigma, int suppression, int size)
{
this.measure = measure;
this.threshold = threshold;
this.k = k;
this.r = suppression;
this.sigma = sigma;
this.size = size;
createGaussian();
base.SupportedFormats.UnionWith(new[]
{
PixelFormat.Format8bppIndexed,
PixelFormat.Format24bppRgb,
PixelFormat.Format32bppRgb,
PixelFormat.Format32bppArgb
});
}
private void initialize(HarrisCornerMeasure measure, float k,
float threshold, double sigma, int suppression, int size)
{
this.measure = measure;
this.threshold = threshold;
this.k = k;
this.r = suppression;
this.sigma = sigma;
this.size = size;
createGaussian();
}
/// <summary>
/// Initializes a new instance of the <see cref="HarrisCornersDetector"/> class.
/// </summary>
public HarrisCornersDetector(HarrisCornerMeasure measure)
{
initialize(measure, k, threshold, sigma, r, size);
}
/// <summary>
/// Initializes a new instance of the <see cref="HarrisCornersDetector"/> class.
/// </summary>
public HarrisCornersDetector(HarrisCornerMeasure measure, float threshold, double sigma, int suppression)
{
initialize(measure, k, threshold, sigma, suppression, size);
}
/// <summary>
/// Initializes a new instance of the <see cref="HarrisCornersDetector"/> class.
/// </summary>
public HarrisCornersDetector(HarrisCornerMeasure measure)
{
initialize(measure, k, threshold, sigma, r, size);
}
/// <summary>
/// Initializes a new instance of the <see cref="HarrisCornersDetector"/> class.
/// </summary>
public HarrisCornersDetector(HarrisCornerMeasure measure, float threshold, double sigma, int suppression)
{
initialize(measure, k, threshold, sigma, suppression, size);
}
/// <summary>
/// Harris Corners Detector.
/// <para>Accord.NET internal call. Please see: <see cref="Accord.Imaging.HarrisCornersDetector"/> for details.</para>
/// </summary>
/// <typeparam name="TDepth">Channel type.</typeparam>
/// <param name="im">Image.</param>
/// <param name="measure">Corners measures.</param>
/// <param name="threshold">Harris threshold.</param>
/// <param name="sigma">Gaussian smoothing sigma.</param>
/// <param name="suppression">Non-maximum suppression window radius.</param>
/// <returns>Interest point locations.</returns>
public static List <IntPoint> HarrisCorners <TDepth>(this Image <Gray, TDepth> im, HarrisCornerMeasure measure = HarrisCornerMeasure.Harris, float threshold = 20000f, double sigma = 1.2, int suppression = 3)
where TDepth : struct
{
HarrisCornersDetector harris = new HarrisCornersDetector(measure, threshold, sigma, suppression);
var points = harris.ProcessImage(im.ToAForgeImage(copyAlways: false, failIfCannotCast: true));
return(points);
}
