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[bharat pathak]

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

    
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