Choosing the ART relaxation parameter for Clear-PEM 2D image reconstruction

An empirical study of algebraic-reconstruction techniques

“…As introduced in the variations of Kaczmarz's method, we will need a relaxation parameter λ k for each iteration of an ART iterative method. It's already claimed that if ART's relaxation parameter is carefully adjusted to the reconstruction procedure, it can produce high-quality images in short computational time [18].…”

“…For each iteration of ART methods studied here, ideally a separate relaxation parameter λ k is required, and it is already claimed that by carefully adjusting the ART relaxation parameter, we can obtain high quality images [18]. However, up to now, several methods have been proposed for finding an optimum and fixed relaxation parameter λ for all iterations, no particular method is generally accepted.…”

“…Various versions of the Kaczmarz's method, such as symmetric Kaczmarz's method and randomized Kaczmarz's method, have been already introduced in such a way that each of them consists of an important parameter, which is called relaxation parameter. It is already proved that a carefully adjusted relaxation parameter can lead to a high quality reconstructed image [18].…”