Find label boundaries

Finds boundaries in a segmented image, returns boolean array with True in the pixels on the boundary between two labels

Definition

Input ports

source

Type: image

Description: source image to find boundaries in

Output ports

mask

Type: image

Description: mask with boundaries

Configuration

Connectivity (connectivity)

Considered connectivity, either direct neighbours (1) or also along diagonals (2)

Mode (mode)

How to mark boundaries: thick marks pixels that are adjacent to differing labels. Inner marks first pixel inside the objects, leaving background unchanged. Outer outlines the boundary of the background pixels to non-background.

Examples

Example flows demonstrating this node:

• Depth_from_stereo_images.syx

Implementation

class node_segmentation.FindBoundaries