We analyze the regularization properties of two recently proposed gradient methods applied to discrete linear inverse problems. By studying their filter factors, we show that the tendency of these methods to eliminate first the eigencomponents of the gradient corresponding to large singular values allows to reconstruct the most significant part of the solution, thus yielding … Read more
Medical Physics — January 2006 — Volume 33, Issue 1, pp. 225-234. Citation Medical Physics — January 2006 — Volume 33, Issue 1, pp. 225-234.