HCL2RGB

This source code is for HCL to RGB color space conversion
4 Downloads
Updated 15 Aug 2023

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This source code is based on the HCL color space equation which has been developed in the paper "A new perceptually uniform color space with associated color similarity measure for content-based image and video retrieval".
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function [r,g,b] = HCL2RGB(H,C,L,gamma)
if L==0
Q=1;
else
Q=exp((1-((3*C)/(4*L)))*(gamma/100));
end
Min = ((4*L)-(3*C))/(4*Q-2);
Max = Min + (3*C)/(2*Q);
if H>=0 && H<=pi/3
r=Max;
b=Min;
g=(r*tan(1.5*H)+b)/(1+tan(1.5*H));
elseif H>pi/3 && H<=2*pi/3
g=Max;
b=Min;
tamp=tan(0.75*(H - pi));
r=(g*(1+tamp)-b)/tamp;
elseif H>2*pi/3 && H<=pi
g=Max;
r=Min;
tamp=tan(0.75*(H - pi));
b=g*(1+tamp)-(r*tamp);
elseif H>=-pi/3 && H<0
r=Max;
g=Min;
tamp=tan(0.75*H);
b=g*(1+tamp)-(r*tamp);
elseif H>=-2*pi/3 && H<-pi/3
b=Max;
g=Min;
tamp=tan(0.75*H);
r=(g*(1+tamp)-b)/tamp;
else
b=Max;
r=Min;
tamp=tan(1.5*(H + pi));
g=(r*tamp + b)/(1+tamp);
end
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Cite As

Sarifuddin Madenda (2024). HCL2RGB (https://www.mathworks.com/matlabcentral/fileexchange/133902-hcl2rgb), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2020a
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.0.0