For nonlinear least square problems, the Gauss-Newton method derived the equation J^T J = J^T f. But the energy in this paper is not in the form of least square problems, I felt that you were just using this formula formally in your code, or you reduced this rigorously?
For nonlinear least square problems, the Gauss-Newton method derived the equation J^T J = J^T f. But the energy in this paper is not in the form of least square problems, I felt that you were just using this formula formally in your code, or you reduced this rigorously?