function spatial_filter = spatial_filter(image, filter)
    rows = size(image, 1);
    cols = size(image, 2);
    filterrows = size(filter, 1);
    filtercols = size(filter, 2);
    spatial_filter = zeros([rows cols]);
    image = double(image);
    for i = 1:rows
        for j = 1:cols
            for k = 1:filterrows
                for l = 1:filtercols
                    i2 = i-k+round(filterrows/2);
                    j2 = j-l+round(filtercols/2);
                    if (i2 <= rows && i2 > 0 && j2 <= cols && j2 > 0)
                        spatial_filter(i,j) = spatial_filter(i,j) + (filter(k, l) * image(i2,j2));
                    end
                end
            end
        end
    end
end