junctions_skeleton--obtains the intersection point and the end point of the skeleton through this operator, which can judge the geometrical simplicity of the foreground (two-time segmentation positioning)

J Unctions_skeleton (Operator)

Name

Junctions_skeleton-find junctions and end points in a skeleton.

Signature

Junctions_skeleton (Region:endpoints, juncpoints::)

Description

Junctions_skeleton detects junctions and end points in a skeleton (see skeleton). The junctions in the input region is output as a region with juncpoints, while the end points is output as a region in endpoints.

To obtain reasonable results with Junctions_skeleton the input region must not contain lines which is more than on e pixel wide. Regions obtained by skeleton meet the condition, while regions obtained by Morph_skeleton does not meet this condition in G Eneral.

Parallelization Multithreading Type:reentrant (runs in parallel with non-exclusive operators). Multithreading Scope:global (May is called from any thread). Automatically parallelized on the tuple level.

Parameters

Region (Input_object) region (-array) →object

Input skeletons.

Endpoints (output_object) region (-array) →object

Extracted end points.

Number of elements:endpoints = = Region

Juncpoints (output_object) region (-array) →object

Extracted junctions.

Number of elements:juncpoints = = Region

Example (Hdevelop)

* non-connected branches of a skeleton

Skeleton (Region,skeleton)

Junctions_skeleton (skeleton,epoints,jpoints)

Difference (s,jpoints,rows)

Set_system (' Heighbourhood ', 4)