/// <summary>
/// Extract features of type <see cref="PNFeatures"/> from the specified minutiae.
/// </summary>
/// <param name="minutiae">
/// The list of <see cref="Minutia"/> to extract the features from.
/// </param>
/// <returns>
/// Features of type <see cref="PNFeatures"/> extracted from the specified minutiae.
/// </returns>
public PNFeatures ExtractFeatures(List <Minutia> minutiae)
{
List <MtiaTriplet> result = new List <MtiaTriplet>();
if (minutiae.Count > 3)
{
foreach (var triangle in Delaunay2D.Triangulate(minutiae))
{
var idxArr = new short[]
{
(short)triangle.A,
(short)triangle.B,
(short)triangle.C
};
MtiaTriplet newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
idxArr = new short[]
{
(short)triangle.A,
(short)triangle.C,
(short)triangle.B
};
newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
idxArr = new short[]
{
(short)triangle.B,
(short)triangle.A,
(short)triangle.C
};
newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
idxArr = new short[]
{
(short)triangle.B,
(short)triangle.C,
(short)triangle.A
};
newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
idxArr = new short[]
{
(short)triangle.C,
(short)triangle.A,
(short)triangle.B
};
newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
idxArr = new short[]
{
(short)triangle.C,
(short)triangle.B,
(short)triangle.A
};
newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
}
}
result.TrimExcess();
return(new PNFeatures(result, minutiae));
}
public PNFeatures ExtractFeatures1(List <Minutia> minutiae)
{
List <MtiaTriplet> result = new List <MtiaTriplet>();
if (minutiae.Count > 3)
{
List <int[]> triplets;
SHullDelaunay.Triangulate(minutiae, out triplets);
foreach (var triangle in triplets)
{
var idxArr = new short[]
{
(short)triangle[0],
(short)triangle[1],
(short)triangle[2]
};
MtiaTriplet newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
idxArr = new short[]
{
(short)triangle[0],
(short)triangle[1],
(short)triangle[2]
};
newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
idxArr = new short[]
{
(short)triangle[0],
(short)triangle[1],
(short)triangle[2]
};
newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
idxArr = new short[]
{
(short)triangle[0],
(short)triangle[1],
(short)triangle[2]
};
newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
idxArr = new short[]
{
(short)triangle[0],
(short)triangle[1],
(short)triangle[2]
};
newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
idxArr = new short[]
{
(short)triangle[0],
(short)triangle[1],
(short)triangle[2]
};
newMTriplet = new MtiaTriplet(idxArr, minutiae);
result.Add(newMTriplet);
}
}
result.TrimExcess();
return(new PNFeatures(result, minutiae));
}
