THREE-DIMENSIONAL INTERPOLATION AND FILTERING OF BIOMEDICAL IMAGES.

In the biomedical area there is often the clinical need to examine sections of the human body along directions in which image acquisition could not be performed; to this end, a set of data of the three-dimensional (3-D) representation of the organ analyzed is required. Moreover, it is very important to extend to 3-D space the techniques already developed and currently used in 2-D space for analysis and information extraction purposes. In this paper, the problem of the interpolation and representation of 3-D images from a small set of 2-D sections is considered first; some preliminary results of 3-D filtering of the 3-D reconstructed images are then presented by using a 3-D FIR zero-phase filter.