[no subject]

[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

 

   

gauss_noise_inject.m
Description: Text document