.. _`Find label boundaries`:

.. _`com.sympathyfordata.imageanalysis.image_find_boundaries`:

Find label boundaries
`````````````````````

.. image:: image_find_boundary.svg
   :width: 48


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





Definition
::::::::::


Input ports
...........

    **source**  image
        source image to find boundaries in


Output ports
............

    **mask**  image
        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
........

* :download:`Depth_from_stereo_images.syx </Examples/Image Analysis/Depth_from_stereo_images.syx>`




Implementation
..............

.. automodule:: node_segmentation
    :noindex:

.. class:: FindBoundaries
    :noindex: