:mod:`imgtools.enhance`
=======================

.. currentmodule:: imgtools.enhance

This module including

- Basic intensity mapping, such as linear, gamma correction, log
  transformation, etc.
- Edge enhancement, e.g., sharpening, unsharp masking.
- Contrast enhancement
- High dynamic range, e.g., Durand2002 [1]_ and Reinhard2002 [2]_.
- Low-light enhancement, including MSRCR [3]_ and MSRCP [3]_.
- Style transfer by Reinhard2002 [4]_.

References
----------
.. [1] F. Durand and J. Dorsey, "Fast bilateral filtering for the display of
    high-dynamic-range images," SIGGRAPH '02', pp. 257-266, Jul. 2002
    doi: 10.1145/566570.566574.
.. [2] Erik Reinhard, Michael Stark, Peter Shirley, and James Ferwerda. 2002.
    Photographic tone reproduction for digital images.
    ACM Trans. Graph. 21, 3 (July 2002), 267-276.
    https://doi.org/10.1145/566654.566575
.. [3] Ana Belén Petro, Catalina Sbert, and Jean-Michel Morel,
    Multiscale Retinex, Image Processing On Line, (2014), pp. 71-88.
    https://doi.org/10.5201/ipol.2014.107
.. [4] E. Reinhard, M. Adhikhmin, B. Gooch and P. Shirley, "Color
    transfer between images," in IEEE Computer Graphics and Applications,
    vol. 21, no. 5, pp. 34-41, July-Aug. 2001, doi: 10.1109/38.946629

---------


Links
-----

=====
Basic
=====

.. autosummary::
   :nosignatures:

   adjust_gamma
   adjust_inverse
   adjust_linear
   adjust_log
   adjust_sigmoid
   high_frequency_emphasis_filter
   unsharp_mask


===========
Equlization
===========

.. autosummary::
   :nosignatures:

   hist_equalize
   match_historgram
   match_mean_std


===
Hdr
===

.. autosummary::
   :nosignatures:

   bilateral_hdr
   reinhard2002


========
Lowlight
========

.. autosummary::
   :nosignatures:

   light_compensation_htchen
   msrcp
   msrcr
   retinex


===========
Stylization
===========

.. autosummary::
   :nosignatures:

   transfer_reinhard

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Documents
---------

.. automodule:: imgtools.enhance
   :members:
   :no-docstring:
   :member-order: bysource