// Farbdistanz zu anderem Cluster bestimmen
public double colorDistance(Cluster c)
{
double distance = Math.Sqrt(Math.Pow(color.Blue - c.color.Blue, 2) + Math.Pow(color.Green - c.color.Green, 2) + Math.Pow(color.Red - c.color.Red, 2));
return distance;
}
// =============== Cluster-Center gleichmäßig positionieren ===============
private void initializeClusterCenters()
{
// Clusters initializieren
clusters = new Cluster[k];
for (int i = 0; i < k; i++)
{
clusters[i] = new Cluster();
}
// Anzahl Clusters in x und y Richtung bestimmen
numberYclusters = Convert.ToInt32(imageLab.Height / s);
numberXclusters = Convert.ToInt32(imageLab.Width / s);
while ((numberYclusters * numberXclusters) > k)
{
numberXclusters--;
}
// Nachbarcluster hinzufügen
for (int i = 0; i < k; i++)
{
if (i >= numberXclusters)
{
Cluster clusterAbove = clusters[i - numberXclusters];
clusters[i].neighbours.Add(clusterAbove, 0);
}
if (i < numberXclusters * (numberYclusters - 1))
{
Cluster clusterBelow = clusters[i + numberXclusters];
clusters[i].neighbours.Add(clusterBelow, 0);
}
if ((i + 1) % numberXclusters != 0)
{
Cluster clusterRight = clusters[i + 1];
clusters[i].neighbours.Add(clusterRight, 0);
}
if (i % numberXclusters != 0)
{
Cluster clusterLeft = clusters[i - 1];
clusters[i].neighbours.Add(clusterLeft, 0);
}
}
// Abstand der Cluster-Center zum Rand bestimmen
int borderY = Convert.ToInt32((imageLab.Height - s * (numberYclusters - 1)) / 2);
int borderX = Convert.ToInt32((imageLab.Width - s * (numberXclusters - 1)) / 2);
// Cluster-Centerpositionen festlegen
int index = 0;
for (int r = 0; r < numberYclusters; r++)
{
for (int c = 0; c < numberXclusters; c++)
{
int x = Convert.ToInt32(borderX + c * s);
int y = Convert.ToInt32(borderY + r * s);
clusters[index].currentCenter = new Vector5(pixels[x, y].vector.l, pixels[x, y].vector.a, pixels[x, y].vector.b, x, y);
index++;
}
}
}
