public static Utils.RectData[] TwoPass(Bitmap labels, Bitmap srcBitmap, Tree root, int background)
{
DisjointSets linked = new DisjointSets(root.Width * root.Height);
int bottom = root.Top + root.Height;
int right = root.Left + root.Width;
int numelements = IdentifyComponents(labels, srcBitmap, linked, root, root.GetHashCode(), bottom, right, background);
//Run the second pass through the image to label each component
//and create bounding rectangles
LabelComponentsAndSetBoundingBoxes(labels, linked, root.Top, root.Left, bottom, right, background);
return GetRectsFromLabeledImage(labels, srcBitmap, numelements, root.Top, root.Left, bottom, right, background);
}
public void SetForeground(Tree node, Bitmap image, Bitmap foreground) {
Ptype ptype = (Ptype)node["ptype"];
Region interiorregion = ptype.Region("interior");
foreground.WriteBlock(Utils.BACKGROUND, node);
if (interiorregion != null)
{
IBoundingBox interior = GetInteriorBox(node, ptype);
int top = interior.Top;
int left = interior.Left;
int leftdepth = ptype.Region("left").Bitmap.Width;
int bottom = interior.Top + interior.Height;
int right = interior.Left + interior.Width;
for(int row = top; row < bottom; row++)
{
for (int col = left; col < right; col++)
{
int backgroundValue = interiorregion.Bitmap[(row - top) % interiorregion.Bitmap.Height,
(col - node.Left - leftdepth) % interiorregion.Bitmap.Width];
if (backgroundValue != image[row, col])
foreground[row, col] = node.GetHashCode();
}
}
//We looked at the features and might have counted them as foreground.
EraseFeaturesFromforeground(foreground, node, ptype);
}
}