function topics=readTopic_rgb(fileName,nCell)
fid = fopen(fileName, 'r');
nWord=4*nCell(1)*nCell(2)/100;

W = fscanf(fid,'%d');
nTopic=length(W)/nWord;
topics=zeros(nTopic,nWord);
for i=1:nTopic
    topics(i,:)=W((i-1)*nWord+1:i*nWord);

end
fclose(fid);
end