For a point of the projective space \(\text {PG}(n,q)\), its Redei factor is linear polynomial in \(n+1\) variables, whose coefficients are coordinates. The power sum subset S {PG}(n,q)\) \((q-1)\)-th powers factors points S. fact that many subsets may share same offers natural connection to discrete tomography. In this paper we deal with two-dimensional case and show notion ghost, employment e...