kornia.color
============

.. currentmodule:: kornia.color

The functions in this section perform various color space conversions.

.. note::
   Check a tutorial for color space conversions `here <https://kornia.github.io/tutorials/nbs/hello_world_tutorial.html>`__.


Grayscale
---------

.. tip::
    Learn more: https://en.wikipedia.org/wiki/Grayscale

.. autofunction:: rgb_to_grayscale
.. autofunction:: bgr_to_grayscale
.. autofunction:: grayscale_to_rgb
.. autofunction:: apply_colormap
    :noindex:

.. autoclass:: GrayscaleToRgb
.. autoclass:: RgbToGrayscale
.. autoclass:: BgrToGrayscale
.. autoclass:: ApplyColorMap
    :noindex:

RGB
---

.. tip::
    Learn more: https://en.wikipedia.org/wiki/RGB_color_model

.. autofunction:: rgb_to_bgr
.. autofunction:: bgr_to_rgb

.. autofunction:: rgb_to_linear_rgb
.. autofunction:: linear_rgb_to_rgb

.. autoclass:: RgbToBgr
.. autoclass:: BgrToRgb

.. autoclass:: LinearRgbToRgb
.. autoclass:: RgbToLinearRgb

RGBA
----

.. tip::
    Learn more: https://en.wikipedia.org/wiki/RGBA_color_model

.. autofunction:: bgr_to_rgba
.. autofunction:: rgb_to_rgba
.. autofunction:: rgba_to_rgb
.. autofunction:: rgba_to_bgr

.. autoclass:: RgbToRgba
.. autoclass:: BgrToRgba
.. autoclass:: RgbaToRgb
.. autoclass:: RgbaToBgr

HLS
---

.. tip::
    Learn more: https://en.wikipedia.org/wiki/HSL_and_HSV

.. autofunction:: rgb_to_hls
.. autofunction:: hls_to_rgb

.. autoclass:: RgbToHls
.. autoclass:: HlsToRgb

HSV
---

.. tip::
    Learn more: https://en.wikipedia.org/wiki/HSL_and_HSV

.. autofunction:: rgb_to_hsv
.. autofunction:: hsv_to_rgb

.. autoclass:: RgbToHsv
.. autoclass:: HsvToRgb

LUV
---

.. tip::
    Learn more: https://en.wikipedia.org/wiki/CIELUV

.. autofunction:: rgb_to_luv
.. autofunction:: luv_to_rgb

.. autoclass:: RgbToLuv
.. autoclass:: LuvToRgb

Lab
---

.. tip::
    Learn more: https://en.wikipedia.org/wiki/CIELAB_color_space

.. autofunction:: rgb_to_lab
.. autofunction:: lab_to_rgb

.. autoclass:: RgbToLab
.. autoclass:: LabToRgb

YCbCr
-----

.. tip::
    Learn more: https://en.wikipedia.org/wiki/YCbCr

.. autofunction:: rgb_to_ycbcr
.. autofunction:: ycbcr_to_rgb

.. autoclass:: YcbcrToRgb
.. autoclass:: RgbToYcbcr

YUV
---

.. tip::
    Learn more: https://en.wikipedia.org/wiki/YUV

.. autofunction:: rgb_to_yuv
.. autofunction:: yuv_to_rgb

.. autoclass:: RgbToYuv
.. autoclass:: YuvToRgb

YUV420
------

.. tip::
    Learn more: https://en.wikipedia.org/wiki/YUV

.. tip::
    Learn more: https://en.wikipedia.org/wiki/Chroma_subsampling

.. autofunction:: rgb_to_yuv420
.. autofunction:: yuv420_to_rgb

.. autoclass:: RgbToYuv420
.. autoclass:: Yuv420ToRgb

YUV422
------

.. tip::
    Learn more: https://en.wikipedia.org/wiki/YUV

.. tip::
    Learn more: https://en.wikipedia.org/wiki/Chroma_subsampling

.. autofunction:: rgb_to_yuv422
.. autofunction:: yuv422_to_rgb

.. autoclass:: RgbToYuv422
.. autoclass:: Yuv422ToRgb

XYZ
---

.. tip::
    Learn more: https://en.wikipedia.org/wiki/CIELUV

.. autofunction:: rgb_to_xyz
.. autofunction:: xyz_to_rgb

.. autoclass:: RgbToXyz
.. autoclass:: XyzToRgb

Bayer RAW
---------

.. tip::
    Learn more: https://en.wikipedia.org/wiki/Bayer_filter

.. autoclass:: CFA
    :members:
    :undoc-members:

.. autofunction:: rgb_to_raw
.. autofunction:: raw_to_rgb
.. autofunction:: raw_to_rgb_2x2_downscaled

.. autoclass:: RawToRgb
.. autoclass:: RgbToRaw
.. autoclass:: RawToRgb2x2Downscaled

Sepia
-----

.. autoclass:: Sepia
.. autofunction:: sepia


Color Maps
----------

.. autoclass:: ColorMap
.. autoclass:: RGBColor


Color maps available:

.. autoclass:: ColorMapType
    :members:
    :undoc-members:
    :member-order: bysource


Functions and modules to use the color maps:

.. autofunction:: apply_colormap
.. autoclass:: ApplyColorMap