Subversion Repositories mkjpeg

filename='test';

filenamet=strcat(filename,'.txt');

I = imread(filename,'bmp');

IYUV=rgb2ycbcr(I);

fid = fopen(filenamet,'w+');

[X,Y,Z] = size(I);

fprintf(fid, '%d\n',Z);  % number of image components

fprintf(fid, '%d\n',X);  % lines

fprintf(fid, '%d\n',Y);  % pixels in line

for x = 1:X

   for y = 1:Y

     for z = 1:Z

       R = int16(I(x,y,1));

       G = int16(I(x,y,2));

       B = int16(I(x,y,3));

       % Y

       if z == 1

         sample = (0.299*R)+(0.587*G)+(0.114*B);

       % Cb

       elseif z == 2

         sample = (-0.1687*R)-(0.3313*G)+(0.5*B)+128;

       % Cr

       elseif z == 3

         sample = (0.5*R)-(0.4187*G)-(0.0813*B)+128;

       end

       if sample > 255

         sample = 255;

       elseif sample < 0

         sample = 0;

       end

       ID(x,y,z) = sample;

       %sample = IYUV(x,y,z);

       sample = I(x,y,z);

       if sample < 16

         fprintf(fid, '0%x', double(sample));

       else

         fprintf(fid, '%x', double(sample));

       end;

        end;

   end;

   fprintf(fid,'\n');

end;

fclose(fid);