I have written a function to convert rgb to ycbcr. if I call this function
with rgb matrix being 512x512x3 then it takes 2.4 seconds to execute
this code. what is the way in which I can make this run faster?
I have also attached the main program where this function is called.
#######################################################################
function ycbcr = rgb2ycbcr(rgb)
red = rgb(:,:,1);
grn = rgb(:,:,2);
blu = rgb(:,:,3);
y = round((77*red + 150*grn + 29*blu)/256) + 16;
cb = round((-44*red - 87*grn + 131*blu)/256) + 128;
cr = round((131*red - 110*grn - 21*blu)/256) + 128;
ycbcr(:,:,1) = y;
ycbcr(:,:,2) = cb;
ycbcr(:,:,3) = cr;
endfunction