Rank identification for an analog ranked order filter

Author

Poikonen, Jonne ; Paasio, Ari

Author_Institution

Dept. of Inf. Technol., Turku Univ., Finland

fYear

2005

fDate

23-26 May 2005

Firstpage

2819

Abstract

The paper suggests a method for rank identification from a previously reported programmable parallel current-mode analog ranked order filter circuit. This allows the input direction with any selected rank to be indicated as well as extracting the correct value from a set of input currents. The rank identification can be implemented with only O(n) increase in circuit complexity. This addition can be used to avoid errors caused by device mismatch and may also result in new application methods for the ranked order filter. Programmable ranked order filtering can be used for many image processing tasks such as mathematical morphology and median filtering.

Keywords

active filters; analogue processing circuits; circuit complexity; network analysis; active filters; analog ranked order filter; circuit complexity; device mismatch; image processing tasks; input transistors; mathematical morphology; median filtering; order statistic filtering; programmable parallel current-mode analog ranked order filter circuit; programmable ranked order filtering; rank identification; Circuits; Filtering; Filters; Image processing; Information technology; Laboratories; Microelectronics; Morphology; Statistics; Virtual colonoscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on

Print_ISBN

0-7803-8834-8

Type

conf

DOI

10.1109/ISCAS.2005.1465213

Filename

1465213