패널티 방법을 이용한 고속 경계 보존 평활화 기법

In this paper, we propose an edge-preserving smoothing operator based on weighted absolute deviation. This formulation makes the algorithm robust for usage on noisy and textured image. Furthermore, we present an efficient technique to solve the proposed objective function. Specifically, we approximate the solution of nonlinear system, by iteratively solving a sequence of two subproblem. Such decomposition not only reduces the overall computation complexity but also enhances the results, comparing with conventional gradient based method.