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Search duplicate images in sub folders using histogram

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from Search duplicate images in sub folders using histogram by Tharindu Adikari
Finds duplicate images in a folder and in sub-folders using a histogram based method.

scan_folder(folder_path) 
function b = scan_folder(folder_path)

file_list = dir(folder_path);
for i=1:length(file_list)
    child_path = [folder_path, '\', file_list(i).name];
    if (file_list(i).isdir && ~strcmp(file_list(i).name, '.')&& ~strcmp(file_list(i).name, '..'))
        scan_folder(child_path);
    elseif (~file_list(i).isdir)
        add_to_db(child_path);
    end
end
b = 1;
end

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