Features
=========

Pyaesthetics supports the estimation of the following features:


* Brightness (in both the BT709 and BT601 standards)
* Contrast (RMS or Michelson contrast)
* Saturation
* Visual Complexity (either by using the weight of the image, by Quadratic Tree Decomposition, or by gradients)
* Simmetry (using Quadratic Tree Decomposition)
* Colorfulness (in both the HSV and RGB color spaces)
* Presence and number of human faces
* Color distribution (16 or 140 W3C colors)
* Number of images within the image
* Surface of visual and textual areas within the image
* Ratio between visual and textual areas
* Ratio between straight and curved lines
* Anisotropy
* Self-similarity (using either the ground, parent, or neighbors method)

For detailed information about the extraction of each feature visit the :ref:`API` page.