.. _`Image index lookup`:

.. _`com.sympathyfordata.imageanalysis.image_index_lookup`:

Image index lookup
``````````````````

.. image:: image_index_lookup.svg
   :width: 48


Takes an integer image and perform a table lookup against a table
indices. It maps each integer value in the input image against the
row that has that index. For each non index column in the table it
creates one channel of output data with the value at that row.
colums in that row it creates one channel.

Can be used for palette lookup or for operating on superpixel labels.





Documentation
:::::::::::::

Takes an integer image and perform a table lookup against a table
indices. It maps each integer value in the input image against the
row that has that index. For each non index column in the table it
creates one channel of output data with the value at that row.
colums in that row it creates one channel.

Can be used for palette lookup or for operating on superpixel labels.


Definition
::::::::::


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

    **labels**  image
        Input image

    **palette**  table
        Table with palette values, each column becomes one channel


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

    **output**  image
        Output image




Configuration
.............

    **Index column** (index column)
        Column names with indices to match







Examples
........

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




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

.. automodule:: node_indexing
    :noindex:

.. class:: ImageIndexLookup
    :noindex: