rgb2lab — Convert sRGB image or colormap values to CIE L*a*b* using D65 white.

rgb2lab(RGB) converts RGB image or colormap values to CIE L*a*b* using the default sRGB/D65 assumptions.

How rgb2lab works

• Accepts MxNx3 truecolor images and Nx3 colormaps.
• Integer RGB inputs are scaled into [0,1] before conversion.
• Name-value options are not implemented in this Tier 1 version.

Example

RGB To Lab

LAB = rgb2lab(RGB);

Expected output:

% LAB has L*, a*, and b* channels

Related Image functions

Open-source implementation

Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how rgb2lab works, line by line, in Rust.

• View rgb2lab.rs on GitHub
• Learn how the runtime works
• Found a bug? Open an issue with a minimal reproduction.

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