public ObjectParameters(ObjectParameters obj)
{
Perimeter = obj.Perimeter;
Square = obj.Square;
Compactness = obj.Compactness;
Xmas = obj.Xmas;
Ymas = obj.Ymas;
m20 = obj.m20;
m02 = obj.m02;
m11 = obj.m11;
elongation = obj.elongation;
OrientationOfMainAxis = obj.OrientationOfMainAxis;
}
private double calculateDistance(ObjectParameters obj, ObjectParameters median)
{
double per = Math.Pow(obj.Perimeter - median.Perimeter, 2);
double sq = Math.Pow(obj.Square - median.Square, 2);
double el = Math.Pow(obj.elongation - median.elongation, 2);
double comp = Math.Pow(obj.Compactness - median.Compactness, 2);
// double orient = Math.Pow(obj.OrientationOfMainAxis - median.OrientationOfMainAxis, 2);
return Math.Sqrt(per + sq + el + comp /*+ orient*/);
}
unsafe private void CalculateParameters()
{
objects = new ObjectParameters[objectsCount];
for (int i = 0; i < objects.Length; i++ )
objects[i] = new ObjectParameters();
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
int labelIndex = GetLabelIndex(x, y);
if (labels[labelIndex] != 0)
{
objects[labels[labelIndex]].Square++;
objects[labels[labelIndex]].Xmas += x;
objects[labels[labelIndex]].Ymas += y;
if (GetLabelIndex(x + 1, y) < 0 || GetLabelIndex(x + 1, y) >= labels.Length ||
GetLabelIndex(x - 1, y) < 0 || GetLabelIndex(x - 1, y) >= labels.Length ||
GetLabelIndex(x, y + 1) < 0 || GetLabelIndex(x, y + 1) >= labels.Length ||
GetLabelIndex(x, y - 1) < 0 || GetLabelIndex(x, y - 1) >= labels.Length)
objects[labels[labelIndex]].Perimeter++;
// Связность 4, внутренняя граница
else if (labels[GetLabelIndex(x + 1, y)] != labels[labelIndex] || labels[GetLabelIndex(x - 1, y)] != labels[labelIndex]
|| labels[GetLabelIndex(x, y + 1)] != labels[labelIndex] || labels[GetLabelIndex(x, y - 1)] != labels[labelIndex])
objects[labels[labelIndex]].Perimeter++;
}
}
}
// Вычисление центра масс и компактности
for (int i = 1; i < objects.Length; i++)
{
objects[i].Xmas /= (double)objects[i].Square;
objects[i].Ymas /= (double)objects[i].Square;
objects[i].Compactness = objects[i].Perimeter * objects[i].Perimeter / objects[i].Square;
}
// Дискретные центральные моменты
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
int labelIndex = GetLabelIndex(x, y);
if (labels[labelIndex] != 0)
{
objects[labels[labelIndex]].m20 += Math.Pow((x - objects[labels[labelIndex]].Xmas), 2);
objects[labels[labelIndex]].m02 += Math.Pow((y - objects[labels[labelIndex]].Ymas), 2);
objects[labels[labelIndex]].m11 += (x - objects[labels[labelIndex]].Xmas) * (y - objects[labels[labelIndex]].Ymas);
}
}
}
// Вычисление удлинённости и ориентаци главной оси
for (int i = 1; i < objects.Length; i++)
{
objects[i].elongation = (objects[i].m20 + objects[i].m02 + Math.Sqrt(Math.Pow((objects[i].m20 - objects[i].m02), 2) + 4 * objects[i].m11 * objects[i].m11)) /
(objects[i].m20 + objects[i].m02 - Math.Sqrt(Math.Pow((objects[i].m20 - objects[i].m02), 2) + 4 * objects[i].m11 * objects[i].m11));
objects[i].OrientationOfMainAxis = 1.0 / 2.0 * Math.Atan(2 * objects[i].m11 / (objects[i].m20 - objects[i].m02));
}
}
private bool isBadValue(ObjectParameters obj)
{
return double.IsNaN(obj.Compactness) || double.IsNaN(obj.elongation) ||
double.IsNaN(obj.OrientationOfMainAxis) || double.IsNaN(obj.Xmas) ||
double.IsNaN(obj.Ymas) || double.IsNaN(obj.m02) ||
double.IsNaN(obj.m20) || double.IsNaN(obj.m11) || double.IsInfinity(obj.Compactness) ||
double.IsInfinity(obj.elongation) || double.IsInfinity(obj.OrientationOfMainAxis) ||
double.IsInfinity(obj.Xmas) || double.IsInfinity(obj.Ymas) || double.IsInfinity(obj.m02) ||
double.IsInfinity(obj.m20) || double.IsInfinity(obj.m11);
}
unsafe private void CalculateParameters()
{
objects = new ObjectParameters[objectsCount];
for (int i = 0; i < objects.Length; i++)
{
objects[i] = new ObjectParameters();
}
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
int labelIndex = GetLabelIndex(x, y);
if (labels[labelIndex] != 0)
{
objects[labels[labelIndex]].Square++;
objects[labels[labelIndex]].Xmas += x;
objects[labels[labelIndex]].Ymas += y;
if (GetLabelIndex(x + 1, y) < 0 || GetLabelIndex(x + 1, y) >= labels.Length ||
GetLabelIndex(x - 1, y) < 0 || GetLabelIndex(x - 1, y) >= labels.Length ||
GetLabelIndex(x, y + 1) < 0 || GetLabelIndex(x, y + 1) >= labels.Length ||
GetLabelIndex(x, y - 1) < 0 || GetLabelIndex(x, y - 1) >= labels.Length)
{
objects[labels[labelIndex]].Perimeter++;
}
// Связность 4, внутренняя граница
else if (labels[GetLabelIndex(x + 1, y)] != labels[labelIndex] || labels[GetLabelIndex(x - 1, y)] != labels[labelIndex] ||
labels[GetLabelIndex(x, y + 1)] != labels[labelIndex] || labels[GetLabelIndex(x, y - 1)] != labels[labelIndex])
{
objects[labels[labelIndex]].Perimeter++;
}
}
}
}
// Вычисление центра масс и компактности
for (int i = 1; i < objects.Length; i++)
{
objects[i].Xmas /= (double)objects[i].Square;
objects[i].Ymas /= (double)objects[i].Square;
objects[i].Compactness = objects[i].Perimeter * objects[i].Perimeter / objects[i].Square;
}
// Дискретные центральные моменты
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
int labelIndex = GetLabelIndex(x, y);
if (labels[labelIndex] != 0)
{
objects[labels[labelIndex]].m20 += Math.Pow((x - objects[labels[labelIndex]].Xmas), 2);
objects[labels[labelIndex]].m02 += Math.Pow((y - objects[labels[labelIndex]].Ymas), 2);
objects[labels[labelIndex]].m11 += (x - objects[labels[labelIndex]].Xmas) * (y - objects[labels[labelIndex]].Ymas);
}
}
}
// Вычисление удлинённости и ориентаци главной оси
for (int i = 1; i < objects.Length; i++)
{
objects[i].elongation = (objects[i].m20 + objects[i].m02 + Math.Sqrt(Math.Pow((objects[i].m20 - objects[i].m02), 2) + 4 * objects[i].m11 * objects[i].m11)) /
(objects[i].m20 + objects[i].m02 - Math.Sqrt(Math.Pow((objects[i].m20 - objects[i].m02), 2) + 4 * objects[i].m11 * objects[i].m11));
objects[i].OrientationOfMainAxis = 1.0 / 2.0 * Math.Atan(2 * objects[i].m11 / (objects[i].m20 - objects[i].m02));
}
}
