public void EstimateSpaceSize()
{
Intarray labels = new Intarray();
labels.Copy(segmentation);
ImgLabels.label_components(ref labels);
Narray <Rect> boxes = new Narray <Rect>();
ImgLabels.bounding_boxes(ref boxes, labels);
Floatarray distances = new Floatarray();
distances.Resize(boxes.Length());
distances.Fill(99999f);
for (int i = 1; i < boxes.Length(); i++)
{
Rect b = boxes[i];
for (int j = 1; j < boxes.Length(); j++)
{
Rect n = boxes[j];
int delta = n.x0 - b.x1;
if (delta < 0)
{
continue;
}
if (delta >= distances[i])
{
continue;
}
distances[i] = delta;
}
}
float interchar = NarrayUtil.Fractile(distances, PGetf("space_fractile"));
space_threshold = interchar * PGetf("space_multiplier");
// impose some reasonable upper and lower bounds
float xheight = 10.0f; // FIXME
space_threshold = Math.Max(space_threshold, PGetf("space_min") * xheight);
space_threshold = Math.Min(space_threshold, PGetf("space_max") * xheight);
}
