divide by the product of scaling

[scott-vsi]

should this divide by the quantity (scaling[0] * scaling[1]) (instead of just scaling[0] and then multiplying by scaling[1])? I don't think this changes the relative order of list_inliers though because the three places where list_of_normalization_value is computed all do the same thing and list_of_normalization_value is just a normalization constant when computing list_inliers