Code covered by the BSD License  

Highlights from
Stereo testbed v0.1

image thumbnail
from Stereo testbed v0.1 by Raul Correal
Testbed for analysis, evaluation and comparison of stereo matching algorithm.

Luv2RGB(luvim) 
function rgb = Luv2RGB(luvim)

if size(luvim,3) ~= 3
    error('im must have three color channels');
end
if ~isa(luvim,'float')
    luvim = im2single(luvim);
end
imsiz = size(luvim);

RGB = [ 3.2405, -1.5371, -0.4985 ; ...
    -0.9693,  1.8760,  0.0416 ; ...
    0.0556, -0.2040,  1.0573 ];
Up = 0.19784977571475;
Vp = 0.46834507665248;
Yn = 1.00000;

l = luvim(:,:,1);

y = Yn*l./903.3;
y(l>.8) = (l(l>.8)+16)/116;
y(l>.8) = Yn*(y(l>.8)).^3;

u = Up+luvim(:,:,2)./(13*l);
v = Vp+luvim(:,:,3)./(13*l);

x = 9*u.*y./(4*v);
z = (12-3*u-20*v).*y./(4*v);

rgb = RGB*reshape(permute(cat(3, x, y, z),[3 1 2]),[3 prod(imsiz(1:2))]);
rgb = reshape(rgb',imsiz);

zr = find(l < .1);
rgb([zr zr+prod(imsiz(1:2)) zr+2*prod(imsiz(1:2))]) = 0;
rgb = min(rgb,1);
rgb = max(rgb,0);

Contact us