Crate rgb2spec

rgb2spec-rs

This crate is a port of rgb2spec, an implementation of this paper by Wenzel Jakob and Johannes Hanika.

It can be used to convert RGB colors in various color spaces to coefficent representations of reflectance spectra. These spectra can then be evaluated for wavelengths in the visible spectrum.

Example

use rgb2spec::{self, RGB2Spec};

let rgb = [1.0, 1.0, 0.3];
let rgb2spec = RGB2Spec::load("examples/out.spec")?;

let coefficients = rgb2spec.fetch(rgb);
let wavelength = 480.0;
let reflectance = rgb2spec::eval_precise(coefficients, wavelength);

Modules

optimize

Structs

RGB2Spec

A precomputed model used to convert RGB data to a coefficient representation of reflectance spectra.

Constants

LAMBDA_MAX

End of the wavelength range that this crate has data for.

LAMBDA_MIN

Start of the wavelength range that this crate has data for.

LAMBDA_RANGE

Size of the wavelength range that this crate has data for.

Functions

eval_precise

Used to evaluate the spectrum represented by coefficients obtained from RGB2Spec::fetch for a specific wavelength.