Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Propagating data within the tree structure. Structure-specific information (INFO) is propagated upward from the leaves to the root, while the segmentation process (SEGMENT) is propagated downward from the root to the leaves. Algorithm 1 provides a schematic description of the corresponding algorithm.
