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Project Description

Colorspacious is a powerful, accurate, and easy-to-use library for performing colorspace conversions.

In addition to the most common standard colorspaces (sRGB, XYZ, xyY, CIELab, CIELCh), we also include: color vision deficiency (“color blindness”) simulations using the approach of Machado et al (2009); a complete implementation of CIECAM02; and the perceptually uniform CAM02-UCS / CAM02-LCD / CAM02-SCD spaces proposed by Luo et al (2006).

To get started, simply write:

from colorspacious import cspace_convert

Jp, ap, bp = cspace_convert([64, 128, 255], "sRGB255", "CAM02-UCS")

This converts an sRGB value (represented as integers between 0-255) to CAM02-UCS J’a’b’ coordinates (assuming standard sRGB viewing conditions by default). This requires passing through 4 intermediate colorspaces; cspace_convert automatically finds the optimal route and applies all conversions in sequence:

This function also of course accepts arbitrary NumPy arrays, so converting a whole image is just as easy as converting a single value.

Documentation:
http://colorspacious.readthedocs.org/
Installation:
pip install colorspacious
Downloads:
https://pypi.python.org/pypi/colorspacious/
Code and bug tracker:
https://github.com/njsmith/colorspacious
Contact:
Nathaniel J. Smith <njs@pobox.com>
Dependencies:
  • Python 2.6+, or 3.3+
  • NumPy
Developer dependencies (only needed for hacking on source):
  • nose: needed to run tests
License:
MIT, see LICENSE.txt for details.
References for algorithms we implement:
  • Luo, M. R., Cui, G., & Li, C. (2006). Uniform colour spaces based on CIECAM02 colour appearance model. Color Research & Application, 31(4), 320–330. doi:10.1002/col.20227
  • Machado, G. M., Oliveira, M. M., & Fernandes, L. A. (2009). A physiologically-based model for simulation of color vision deficiency. Visualization and Computer Graphics, IEEE Transactions on, 15(6), 1291–1298. http://www.inf.ufrgs.br/~oliveira/pubs_files/CVD_Simulation/CVD_Simulation.html

Other Python packages with similar functionality that you might want to check out as well or instead:

Release History

Release History

1.1.0

This version

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1.0.0

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0.1.0

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0.0.0-dev

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
colorspacious-1.1.0-py2.py3-none-any.whl (37.6 kB) Copy SHA256 Checksum SHA256 py2.py3 Wheel Nov 10, 2016
colorspacious-1.1.0.zip (698.7 kB) Copy SHA256 Checksum SHA256 Source Nov 10, 2016

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