HeNLM-LA3D: A Three-Dimensional Locally Adaptive Hermite Functions Expansion Based Non-Local Means Algorithm for CT Applicationsстатья
Статья опубликована в журнале из перечня ВАК
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 марта 2016 г.
Местоположение издательства:Road Town, United Kingdom
Первая страница:706
Последняя страница:716
Аннотация:A three-dimensional filtering algorithm for CT images (HeNLM-LA3D) has been proposed that is based on expanding the pixel neighborhood into Hermite functions, which form an orthonormal basis.Accounting for Hermite functions properties, pixel neighborhoods are oriented according to principal components of the structure tensor. The filtering parameter is adaptively adjusted to local estimates of the noise level. A noise estimation algorithm is proposed.