do_sift_file.m

phow is the code for extracting pyramid features from image

function CSift4CC(par,image)

%convertir a ppm
s=sprintf('%s%s',par.directoriImatges,image);
I = imread(s);
if par.BW==0 && size(I,3)==3, I = rgb2gray(I); end    
   
if size(I,3)==3 && par.BW==1
    
    %HSV
    HSV = rgb2hsv(I);
    h = sprintf('%s%s.H.jpg',par.directoriImatges,image);
    imwrite(HSV(:,:,1),h);
    s = sprintf('%s%s.S.jpg',par.directoriImatges,image);
    imwrite(HSV(:,:,2),s);
    v = sprintf('%s%s.V.jpg',par.directoriImatges,image);
    imwrite(HSV(:,:,3),v);
           
    do_Sift_HSV(par,image);
    
    comand = sprintf('rm %s',h);
    unix(comand);
    comand = sprintf('rm %s',s);
    unix(comand);
    comand = sprintf('rm %s',v);
    unix(comand);
end
if size(I,3)<3 
    fprintf('menys 3');
    img = sprintf('%s%s',par.directoriImatges,image);
    regions = sprintf('%s%s.support',par.directoriSupport,image);
    
    if par.BW==1, sift = sprintf('%s%s.V.sift',par.directoriSift,image); end
    if par.BW==0, sift = sprintf('%s%s.sift',par.directoriSift,image); end                
    
    do_sift(img,regions,sift);
end