2. The method as set forth in claim 1 , further comprising: after the estimating, iteratively adjusting the partitioning to increase the number of soft bin regions and repeating the estimating over the increased number of soft bins until a stopping criterion is met.
2. The method as set forth in claim 1 , further comprising: after the estimating, iteratively adjusting the partitioning to increase the number of soft bin regions and repeating the estimating over the increased number of soft bins until a stopping criterion is met. 3. The method as set forth in claim 2 , wherein each iteration of the estimating uses the estimated integrals of the previous iteration of the estimating as initial values.