function [ minc,maxc ] = getFeatureExt( img )
    ncnls = 8;
    secs = 6;
    cnls = zeros(size(img,1), size(img,2),ncnls);
    cnls(:,:,1:3) = img;
    cnls(:,:,4:6) = rgb2ycbcr(img);
    hsv = rgb2hsv(img);
    cnls(:,:,7:8) = hsv(:,:,1:2);
    %for i=1:ncnls
    %    cnls(:,:,i) = histeq(cnls(:,:,i));
    %end
    % Schmid
    scVec=[
        1,2;
        1,4;
        2,4;
        1,6;
        2,6;
        3,6;
        1,8;
        2,8;
        3,8;
        1,10;
        2,10;
        3,10;
        4,10];
    gbVec = [
        0.3,0,4,2;
        0.3,0,8,2;
        0.4,0,4,1;
        0.4,0,8,1;
        0.3,pi/2,4,2;
        0.3,pi/2,8,2;
        0.4,pi/2,4,1;
        0.4,pi/2,8,1;];
    gb = length(gbVec);
    sc = length(scVec);
    minc = [];
    maxc = [];
    for cnl = 1:ncnls
        for sec = 1:secs
            section = getSection(cnls(:,:,cnl),sec,secs);
            res = section;
            minc = cat(2,minc,min(min(res)));
            maxc = cat(2,maxc,max(max(res)));
        end
    end
    for i = 1:sc
        for sec = 1:secs
            filt = schmidFilter(scVec(i,1),scVec(i,2));
            section = getSection(hsv(:,:,3),sec,secs);
            res = imfilter(section, filt, 'symmetric');
            minc = cat(2,minc,min(min(res)));
            maxc = cat(2,maxc,max(max(res)));
        end
    end
    for i = 1:gb
        for sec = 1:secs
            filt = gaborFilter(gbVec(i,1),gbVec(i,2),gbVec(i,3),gbVec(i,4));
            section = getSection(hsv(:,:,3),sec,secs);
            res = imfilter(section, filt, 'symmetric');
            minc = cat(2,minc,min(min(res)));
            maxc = cat(2,maxc,max(max(res)));
        end
    end
end