A 4D frequency-planar IIR filter and its application to light field processing

Author

Dansereau, Don ; Bruton, Len

Author_Institution

Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada

Volume

4

fYear

2003

fDate

25-28 May 2003

Abstract

A 4D frequency-planar filter is described, having a steady-state frequency response with a pass band that approximates that of a 4D plane. It is shown that a light field containing Lambertian surfaces with no occlusions may be selectively filtered for depth using such a filter. Examples are given showing the effectiveness of the filter in scenes with and without occlusions. A technique for effectively reducing the length of the transient response of the filter is also proposed and the effectiveness of this technique is demonstrated.

Keywords

IIR filters; frequency response; multidimensional digital filters; optical information processing; rendering (computer graphics); transient response; 4D frequency-planar IIR filter; Lambertian surfaces; image-based rendering; light field processing; occlusions; pass band; selectively depth filtering; steady-state frequency response; transient response length; Application software; Band pass filters; Frequency response; IIR filters; Layout; Light sources; Optical propagation; Rendering (computer graphics); Steady-state; Transient response;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205915

Filename

1205915