static bool IsWithinGapLimits(SkeletonMinutia end1, SkeletonMinutia end2)
{
const int ruptureSize = 5;
const int gapSize = 20;
const byte gapAngle = 32;
int distanceSq = (end1.Position - end2.Position).SqLength;
if (distanceSq <= MathEx.Sq(ruptureSize))
{
return(true);
}
if (distanceSq > MathEx.Sq(gapSize))
{
return(false);
}
byte gapDirection = Angle.AtanB(end1.Position, end2.Position);
byte direction1 = Angle.AtanB(end1.Position, GetAngleSampleForGapRemoval(end1));
if (Angle.Distance(direction1, Angle.Opposite(gapDirection)) > gapAngle)
{
return(false);
}
byte direction2 = Angle.AtanB(end2.Position, GetAngleSampleForGapRemoval(end2));
if (Angle.Distance(direction2, gapDirection) > gapAngle)
{
return(false);
}
return(true);
}
static bool IsWithinGapLimits(SkeletonMinutia end1, SkeletonMinutia end2)
{
int distanceSq = (end1.Position - end2.Position).LengthSq;
if (distanceSq <= Integers.Sq(Parameters.MaxRuptureSize))
{
return(true);
}
if (distanceSq > Integers.Sq(Parameters.MaxGapSize))
{
return(false);
}
double gapDirection = DoubleAngle.Atan(end1.Position, end2.Position);
double direction1 = DoubleAngle.Atan(end1.Position, AngleSampleForGapRemoval(end1));
if (DoubleAngle.Distance(direction1, DoubleAngle.Opposite(gapDirection)) > Parameters.MaxGapAngle)
{
return(false);
}
double direction2 = DoubleAngle.Atan(end2.Position, AngleSampleForGapRemoval(end2));
if (DoubleAngle.Distance(direction2, gapDirection) > Parameters.MaxGapAngle)
{
return(false);
}
return(true);
}
void RemovePores()
{
const int maxArmLength = 41;
foreach (SkeletonMinutia minutia in Minutiae)
{
if (minutia.Ridges.Count == 3)
{
for (int exit = 0; exit < 3; ++exit)
{
SkeletonRidge exitRidge = minutia.Ridges[exit];
SkeletonRidge arm1 = minutia.Ridges[(exit + 1) % 3];
SkeletonRidge arm2 = minutia.Ridges[(exit + 2) % 3];
if (arm1.End == arm2.End && exitRidge.End != arm1.End && arm1.End != minutia && exitRidge.End != minutia)
{
SkeletonMinutia end = arm1.End;
if (end.Ridges.Count == 3 && arm1.Points.Count <= maxArmLength && arm2.Points.Count <= maxArmLength)
{
arm1.Detach();
arm2.Detach();
SkeletonRidge merged = new SkeletonRidge();
merged.Start = minutia;
merged.End = end;
foreach (Point point in MathEx.ConstructLine(minutia.Position, end.Position))
{
merged.Points.Add(point);
}
}
break;
}
}
}
}
RemoveKnots();
}
static Point GetAngleSampleForGapRemoval(SkeletonMinutia minutia)
{
const int angleSampleOffset = 22;
SkeletonRidge ridge = minutia.Ridges[0];
if (angleSampleOffset < ridge.Points.Count)
return ridge.Points[angleSampleOffset];
else
return ridge.End.Position;
}
static IntPoint AngleSampleForGapRemoval(SkeletonMinutia minutia)
{
var ridge = minutia.Ridges[0];
if (Parameters.GapAngleOffset < ridge.Points.Count)
{
return(ridge.Points[Parameters.GapAngleOffset]);
}
else
{
return(ridge.End.Position);
}
}
static Point GetAngleSampleForGapRemoval(SkeletonMinutia minutia)
{
const int angleSampleOffset = 22;
SkeletonRidge ridge = minutia.Ridges[0];
if (angleSampleOffset < ridge.Points.Count)
{
return(ridge.Points[angleSampleOffset]);
}
else
{
return(ridge.End.Position);
}
}
Dictionary <IntPoint, SkeletonMinutia> MinutiaCenters(Dictionary <IntPoint, List <IntPoint> > linking)
{
var centers = new Dictionary <IntPoint, SkeletonMinutia>();
foreach (var currentPos in linking.Keys)
{
var linkedMinutiae = linking[currentPos];
var primaryPos = linkedMinutiae[0];
if (!centers.ContainsKey(primaryPos))
{
var sum = IntPoint.Zero;
foreach (var linkedPos in linkedMinutiae)
{
sum += linkedPos;
}
var center = new IntPoint(sum.X / linkedMinutiae.Count, sum.Y / linkedMinutiae.Count);
var minutia = new SkeletonMinutia(center);
AddMinutia(minutia);
centers[primaryPos] = minutia;
}
centers[currentPos] = centers[primaryPos];
}
return(centers);
}
Dictionary <Point, SkeletonMinutia> ComputeMinutiaCenters(Dictionary <Point, List <Point> > linking)
{
Dictionary <Point, SkeletonMinutia> centers = new Dictionary <Point, SkeletonMinutia>();
foreach (Point currentPos in linking.Keys)
{
List <Point> linkedMinutiae = linking[currentPos];
Point primaryPos = linkedMinutiae[0];
if (!centers.ContainsKey(primaryPos))
{
Point sum = new Point();
foreach (Point linkedPos in linkedMinutiae)
{
sum += linkedPos;
}
Point center = new Point(sum.X / linkedMinutiae.Count, sum.Y / linkedMinutiae.Count);
SkeletonMinutia minutia = new SkeletonMinutia(center);
AddMinutia(minutia);
centers[primaryPos] = minutia;
}
centers[currentPos] = centers[primaryPos];
}
return(centers);
}
public void RemoveMinutia(SkeletonMinutia minutia)
{
Minutiae.Remove(minutia);
}
public void AddMinutia(SkeletonMinutia minutia)
{
Minutiae.Add(minutia);
}
public void Detach()
{
Start = null;
End = null;
}
public void Detach()
{
Start = null;
End = null;
}
public void RemoveMinutia(SkeletonMinutia minutia)
{
Minutiae.Remove(minutia);
}
public void AddMinutia(SkeletonMinutia minutia)
{
Minutiae.Add(minutia);
}
Dictionary<Point, SkeletonMinutia> ComputeMinutiaCenters(Dictionary<Point, List<Point>> linking)
{
Dictionary<Point, SkeletonMinutia> centers = new Dictionary<Point, SkeletonMinutia>();
foreach (Point currentPos in linking.Keys)
{
List<Point> linkedMinutiae = linking[currentPos];
Point primaryPos = linkedMinutiae[0];
if (!centers.ContainsKey(primaryPos))
{
Point sum = new Point();
foreach (Point linkedPos in linkedMinutiae)
sum += linkedPos;
Point center = new Point(sum.X / linkedMinutiae.Count, sum.Y / linkedMinutiae.Count);
SkeletonMinutia minutia = new SkeletonMinutia(center);
AddMinutia(minutia);
centers[primaryPos] = minutia;
}
centers[currentPos] = centers[primaryPos];
}
return centers;
}
static bool IsWithinGapLimits(SkeletonMinutia end1, SkeletonMinutia end2)
{
const int ruptureSize = 5;
const int gapSize = 20;
const byte gapAngle = 32;
int distanceSq = (end1.Position - end2.Position).SqLength;
if (distanceSq <= MathEx.Sq(ruptureSize))
return true;
if (distanceSq > MathEx.Sq(gapSize))
return false;
byte gapDirection = Angle.AtanB(end1.Position, end2.Position);
byte direction1 = Angle.AtanB(end1.Position, GetAngleSampleForGapRemoval(end1));
if (Angle.Distance(direction1, Angle.Opposite(gapDirection)) > gapAngle)
return false;
byte direction2 = Angle.AtanB(end2.Position, GetAngleSampleForGapRemoval(end2));
if (Angle.Distance(direction2, gapDirection) > gapAngle)
return false;
return true;
}
