A Modified Two Dimensional Adaptive Digital Filter

Abstract

In this paper, a new scheme of recursive two-dimensional (2D) adaptive digital filter is presented. It consists of a forward section, a feedback section, and decision block. A little complexity increase from [10] is used by adding adaptive quantizer to predictor error. Each section is realized as conventional non-recursive adaptive filter. Either 2D adaptive LMS or sign function algorithm can be used for adaptation. The proposed recursive filter operates as a 2D adaptive line enhancer (ALE) for images contaminated with noise. Its performance is compared with that given in [1].

A quantitative approach for studying the bioactivity of nanohydroxyapatite/gold composites

“…In addition, bands at 1000 and 650 cm −1 corresponding to phosphate groups are also shown. The intensities of these bands are low relative to their counterparts present in the spectra of each of HA and PVA reported in previous work …”