public List <Int16DoubleWithValue> FindMaxima()
{
List <Int16DoubleWithValue> list = FindLocalMaxima();
list.Sort();
FlagMap2d flag = new FlagMap2d(bmp.width, bmp.height, 0);
List <Int16DoubleWithValue> r = new List <Int16DoubleWithValue>();
List <Int16Double> temp = new List <Int16Double>();
for (int i = 0; i < list.Count; i++)
{
if (flag.GetFlagOn(list[i].X, list[i].Y) == UNPROCESSED)
{
bool ret = FloodFill(list[i].X, list[i].Y, temp, flag);
if (ret)
{
r.Add(list[i]);
MarkAll(temp, PROCESSED, flag);
}
else
{
MarkAll(temp, UNPROCESSED, flag);
flag.SetFlagOn(list[i].X, list[i].Y, PROCESSED);
}
temp.Clear();
}
}
return(r);
}
private void MarkAll(List <Int16Double> ret, byte v, FlagMap2d flag)
{
for (int i = 0; i < ret.Count; i++)
{
flag.SetFlagOn(ret[i].X, ret[i].Y, v);
}
}
private bool FloodFill(int x, int y, List <Int16Double> ret, FlagMap2d flag)
{
ret.Clear();
Queue <Int16Double> queue = new Queue <Int16Double>();
ret.Add(new Int16Double(x, y));
float pvalue = bmp.GetPixel(x, y);
flag.SetFlagOn(x, y, VISITED);
queue.Enqueue(new Int16Double(x, y));
while (queue.Count != 0)
{
Int16Double p = queue.Dequeue();
for (int i = 0; i < 8; i++)
{
int tx = p.X + Delta[i].X;
int ty = p.Y + Delta[i].Y;
if (InRange(tx, ty))
{
byte f = flag.GetFlagOn(tx, ty);
if (f == PROCESSED)
{
return(false);
}
else
{
bool minum = false;
if (IncludePredicate(tx, ty, pvalue, ref minum) && f == UNPROCESSED)
{
if (minum)
{
return(false);
}
Int16Double t = new Int16Double(tx, ty);
queue.Enqueue(t);
flag.SetFlagOn(tx, ty, VISITED);
ret.Add(t);
}
}
}
}
}
return(true);
}