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:py:mod:`~PIL.ImageEnhance` module

docs/reference/ImageEnhance.rst

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.. py:module:: PIL.ImageEnhance .. py:currentmodule:: PIL.ImageEnhance

:py:mod:~PIL.ImageEnhance module

The :py:mod:~PIL.ImageEnhance module contains a number of classes that can be used for image enhancement.

Example: Vary the sharpness of an image

::

from PIL import ImageEnhance

enhancer = ImageEnhance.Sharpness(image)

for i in range(8):
    factor = i / 4.0
    enhancer.enhance(factor).show(f"Sharpness {factor:f}")

Also see the :file:enhancer.py demo program in the :file:Scripts/ directory.

Classes

All enhancement classes implement a common interface, containing a single method:

.. _enhancement-factor:

.. py:class:: _Enhance

.. py:method:: enhance(factor)

    Returns an enhanced image.

    :param factor: A floating point value controlling the enhancement.
                   Factor 1.0 always returns a copy of the original image,
                   lower factors mean less color (brightness, contrast,
                   etc), and higher values more. There are no restrictions
                   on this value.

.. py:class:: Color(image)

Adjust image color balance.

This class can be used to adjust the colour balance of an image, in a
manner similar to the controls on a colour TV set. An
:ref:`enhancement factor <enhancement-factor>` of 0.0 gives a black and
white image. A factor of 1.0 gives the original image.

.. py:class:: Contrast(image)

Adjust image contrast.

This class can be used to control the contrast of an image, similar to the
contrast control on a TV set. An
:ref:`enhancement factor <enhancement-factor>` of 0.0 gives a solid gray
image, a factor of 1.0 gives the original image, and greater values
increase the contrast of the image.

.. py:class:: Brightness(image)

Adjust image brightness.

This class can be used to control the brightness of an image. An
:ref:`enhancement factor <enhancement-factor>` of 0.0 gives a black image,
a factor of 1.0 gives the original image, and greater values increase the
brightness of the image.

.. py:class:: Sharpness(image)

Adjust image sharpness.

This class can be used to adjust the sharpness of an image. An
:ref:`enhancement factor <enhancement-factor>` of 0.0 gives a blurred
image, a factor of 1.0 gives the original image, and a factor of 2.0 gives
a sharpened image.