colorSpec - Color Calculations with Emphasis on Spectral Data

Calculate with spectral properties of light sources, materials, cameras, eyes, and scanners. Build complex systems from simpler parts using a spectral product algebra. For light sources, compute CCT, CRI, and SSI. For object colors, compute optimal colors and Logvinenko coordinates. Work with the standard CIE illuminants and color matching functions, and read spectra from text files, including CGATS files. Estimate a spectrum from its response. A user guide and 9 vignettes are included.

Last updated 10 months ago

5.92 score 2 stars 4 packages 69 scripts 546 downloads

spacesXYZ - CIE XYZ and some of Its Derived Color Spaces

Functions for converting among CIE XYZ, xyY, Lab, and Luv. Calculate Correlated Color Temperature (CCT) and the Planckian and daylight loci. The XYZs of some standard illuminants and some standard linear chromatic adaptation transforms (CATs) are included. Three standard color difference metrics are included.

Last updated 10 months ago

5.24 score 9 packages 20 scripts 3.2k downloads

munsellinterpol - Interpolate Munsell Renotation Data from Hue/Chroma to CIE/RGB

Methods for interpolating data in the Munsell color system following the ASTM D-1535 standard. Hues and chromas with decimal values can be interpolated and converted to/from the Munsell color system and CIE xyY, CIE XYZ, CIE Lab, CIE Luv, or RGB. Includes ISCC-NBS color block lookup. Based on the work by Paul Centore, "The Munsell and Kubelka-Munk Toolbox".

Last updated 3 years ago

3.98 score 2 stars 1 packages 40 scripts 469 downloads

colorscience - Color Science Methods and Data

Methods and data for color science - color conversions by observer, illuminant, and gamma. Color matching functions and chromaticity diagrams. Color indices, color differences, and spectral data conversion/analysis. This package is deprecated and will someday be removed; for reasons and details please see the README file.

Last updated 7 months ago

3.93 score 4 stars 214 scripts 724 downloads

spacesRGB - Standard and User-Defined RGB Color Spaces, with Conversion Between RGB and CIE XYZ and Lab

Standard RGB spaces included are sRGB, 'Adobe' RGB, 'ProPhoto' RGB, BT.709, and others. User-defined RGB spaces are also possible. There is partial support for ACES Color workflows.

Last updated 6 days ago

3.08 score 2 packages 10 scripts 353 downloads

zonohedra - Compute and Plot Zonohedra from Vector Generators

Computes a zonohedron from real vector generators. The package also computes zonogons (2D zonotopes) and zonosegs (1D zonotopes). An elementary S3 class for matroids is included, which supports matroids with rank 3, 2, and 1. Optimization methods are taken from Heckbert (1985) <https://www.cs.cmu.edu/~ph/zono.ps.gz>.

Last updated 5 months ago

2.70 score 8 scripts 157 downloads