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24 Feb 2009 Image retrieval - Query by Example Demo This demo provides a simple query by image example method, based on HSV values. Author: Theodoros Giannakopoulos Giannakopoulos, Theodoros

Hi guys, thanx alot for your comments. Sorry for the looong delay, but I hadn't checked the forum for quite a long time. Anyway, I am posting a simple function that computes the color histograms of a whole directory of images. In this way you will be also able to build your training data. You can use this function and then store the returned histograms (along with the filenames) in a mat file.

Matlab code:

function [Hists, files] = getImageHistsDir(DirName)

D = dir(DirName);

count = 0;

for (i=3:length(D))
    if ((strcmpi(D(i).name(end-3:end), '.jpg')==1) | (strcmpi(D(i).name(end-3:end), '.jpeg')==1))
        count = count + 1;
        [Hists{count}] = getImageHists([DirName '\\' D(i).name]);
        files{count} = [DirName '\\' D(i).name];
        fprintf('%.4d File %40s computed...\n',count,files{count})
    end
end

As you can see, you just specify the directory name in which the images are stored. This is actually what Nicola Franzoso has provided, but in a function mode.

23 Nov 2008 Real Time Microphone and Camera data acquisition and audio-video processing This Matlab-code is a demo for real-time audio and image processing. Author: Theodoros Giannakopoulos Giannakopoulos, Theodoros

 

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