.. _`Filter Image, Dual Output`:

.. _`syip.imagefiltering2`:

Filter Image, Dual Output
`````````````````````````

.. image:: image_filtering_dual.svg
   :width: 48


Filters one image using algorithms with two images as output




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

Algorithms
==========

    **corner_foerstner**
        Computes Foerstner corner measure response images. Outputs error eclipse sizes (top) and roundness or error eclipse (bottom).


        :sigma: Standard deviation of gaussian kernel (default 1.0)




    **hessian eigenvalues**
        Computes the eigenvalues of the hessian matrix for each pixel. Returns larger eigenvalue in first output image and smaller in second


        :sigma: Standard deviation of gaussian kernel (default 3.0) used for calculating Hessian.
            Approximation is not reliable for sigma < 3.0


Definition
::::::::::


Input ports
===========

    **source**  image
        source image to filter


Output ports
============

    **resultA**  image
        result after filtering

    **resultB**  image
        result after filtering




Configuration
=============

    **Algorithm** (algorithm)
        (no description)
    **n** (n)
        (no description)
    **sigma** (sigma)
        (no description)
    **threshold** (threshold)
        (no description)









Implementation
==============

.. automodule:: node_filtering
    :noindex:

.. class:: ImageFiltering2
    :noindex: