function result = getRoundness2(image)
    P = getPerimeter(image);
    [mean_x, mean_y] = getGravityCenter(image);
    u = 0;

    cont = getContourCoordinates(image)
    // FIXME
    // u = u + sqrt((cont(i, x) - mean_x)^2 + (cont(i, y)^2);
    u = 1 / P * u;

    d = 0;
    // FIXME
    // d = d + (sqrt((cont(i, x) - mean_x)^2 + (cont(i, y)^2) - u)^2;
    d = sqrt(1 / P * d);

    C2 = u / d;
endfunction