// IE'09 segmentation algorithm to find hot spots
// Returns the list of hotspots
public ArrayList Solve()
{
float threshold = RTDPSettings.segmentationSettings.hotspotThreshold;
ArrayList hotspots = new ArrayList();
if (irImage.DataTmax < threshold)
return hotspots;
float[] data = irImage.FPFData;
HotSpot[] line = new HotSpot[irImage.Width];
int x, y, i;
float t;
// process first line
x = y = i = 0;
t = data[i++];
if (t < threshold)
{
line[x] = null;
}
else
{
HotSpot h = new HotSpot(x, y, t);
hotspots.Add(h);
line[x] = h;
}
for (x = 1; x < irImage.Width; x++)
{
t = data[i++];
if (t < threshold)
{
line[x] = null;
}
else if (line[x - 1] == null)
{
HotSpot h = new HotSpot(x, y, t);
hotspots.Add(h);
line[x] = h;
}
else
{
line[x - 1].AddPixel(x, y, t);
line[x] = line[x - 1];
}
}
// process next lines
for (y = 1; y < irImage.Height; y++)
{
x = 0;
t = data[i++];
if (t < threshold)
{
line[x] = null;
}
else if (line[x] == null)
{
HotSpot h = new HotSpot(x, y, t);
hotspots.Add(h);
line[x] = h;
}
else
{
line[x].AddPixel(x, y, t);
}
for (x = 1; x < irImage.Width; x++)
{
t = data[i++];
if (t < threshold)
{
line[x] = null;
}
else if ((line[x] == null) && (line[x - 1] == null))
{
HotSpot h = new HotSpot(x, y, t);
hotspots.Add(h);
line[x] = h;
}
else if ((line[x] == null) && (line[x - 1] != null))
{
line[x - 1].AddPixel(x, y, t);
line[x] = line[x - 1];
}
else if ((line[x] != null) && (line[x - 1] == null))
{
line[x].AddPixel(x, y, t);
}
else if (line[x] == line[x - 1])
{
line[x].AddPixel(x, y, t);
}
else
{
HotSpot h = line[x - 1];
line[x].AddHotSpot(h);
line[x].AddPixel(x, y, t);
for (int j = 0; j < irImage.Width; j++)
{
if (line[j] == h) line[j] = line[x];
}
hotspots.Remove(h);
}
}
}
float k = (float)((metadata.AGL * metadata.AGL * camera.pixelPitch * camera.pixelPitch) / (camera.focalLength * camera.focalLength * refArea));
foreach (HotSpot h in hotspots)
{
h.Magnitude = k * (float)h.NumPixels * (h.AvgTemp - threshold) / (irImage.RangeTmax - threshold);
}
return hotspots;
}
public void AddHotSpot(HotSpot h)
{
pixels.AddRange(h.pixels);
if (h.max_n > max_n) max_n = h.max_n;
if (h.min_n < min_n) min_n = h.min_n;
if (h.max_m > max_m) max_m = h.max_m;
if (h.min_m < min_m) min_m = h.min_m;
if (h.max_t > max_t) max_t = h.max_t;
sum_nt += h.sum_nt;
sum_mt += h.sum_mt;
sum_t += h.sum_t;
center_n = (int)(sum_nt / sum_t);
center_m = (int)(sum_mt / sum_t);
}
// IE'09 segmentation algorithm to find hot spots
// Returns the list of hotspots
public ArrayList Solve()
{
float threshold = RTDPSettings.segmentationSettings.hotspotThreshold;
ArrayList hotspots = new ArrayList();
if (irImage.DataTmax < threshold)
{
return(hotspots);
}
float[] data = irImage.FPFData;
HotSpot[] line = new HotSpot[irImage.Width];
int x, y, i;
float t;
// process first line
x = y = i = 0;
t = data[i++];
if (t < threshold)
{
line[x] = null;
}
else
{
HotSpot h = new HotSpot(x, y, t);
hotspots.Add(h);
line[x] = h;
}
for (x = 1; x < irImage.Width; x++)
{
t = data[i++];
if (t < threshold)
{
line[x] = null;
}
else if (line[x - 1] == null)
{
HotSpot h = new HotSpot(x, y, t);
hotspots.Add(h);
line[x] = h;
}
else
{
line[x - 1].AddPixel(x, y, t);
line[x] = line[x - 1];
}
}
// process next lines
for (y = 1; y < irImage.Height; y++)
{
x = 0;
t = data[i++];
if (t < threshold)
{
line[x] = null;
}
else if (line[x] == null)
{
HotSpot h = new HotSpot(x, y, t);
hotspots.Add(h);
line[x] = h;
}
else
{
line[x].AddPixel(x, y, t);
}
for (x = 1; x < irImage.Width; x++)
{
t = data[i++];
if (t < threshold)
{
line[x] = null;
}
else if ((line[x] == null) && (line[x - 1] == null))
{
HotSpot h = new HotSpot(x, y, t);
hotspots.Add(h);
line[x] = h;
}
else if ((line[x] == null) && (line[x - 1] != null))
{
line[x - 1].AddPixel(x, y, t);
line[x] = line[x - 1];
}
else if ((line[x] != null) && (line[x - 1] == null))
{
line[x].AddPixel(x, y, t);
}
else if (line[x] == line[x - 1])
{
line[x].AddPixel(x, y, t);
}
else
{
HotSpot h = line[x - 1];
line[x].AddHotSpot(h);
line[x].AddPixel(x, y, t);
for (int j = 0; j < irImage.Width; j++)
{
if (line[j] == h)
{
line[j] = line[x];
}
}
hotspots.Remove(h);
}
}
}
float k = (float)((metadata.AGL * metadata.AGL * camera.pixelPitch * camera.pixelPitch) / (camera.focalLength * camera.focalLength * refArea));
foreach (HotSpot h in hotspots)
{
h.Magnitude = k * (float)h.NumPixels * (h.AvgTemp - threshold) / (irImage.RangeTmax - threshold);
}
return(hotspots);
}