Stream processing architecture for real-time implementation of perspective spatial transformations

Author

Evemy, J.D. ; Allerton, D.J. ; Zaluska, E.J.

Author_Institution

Dept. of Electron. & Comput. Sci., Southampton Univ., UK

Volume

137

Issue

3

fYear

1990

fDate

6/1/1990 12:00:00 AM

Firstpage

123

Lastpage

128

Abstract

A system is presented which is capable of performing perspective spatial transformations at video rate, by means of a mapping function which can vary at frame rate. The mapping is implemented by two successive applications of a one-dimensional algorithm operating in scan-line order, using a framestore to store an intermediate image. A novel one-dimensional filtering algorithm provides a continuous mapping from source to destination coordinates, significantly reducing aliasing. Emphasis is placed on the design of a novel stream processing architecture which, coupled with an efficient pipelined coordinate generation system, provides single-cycle per output pixel performance.<>

Keywords

computer architecture; computerised pattern recognition; computerised picture processing; filtering and prediction theory; pipeline processing; real-time systems; continuous mapping; destination coordinates; framestore; image processing; intermediate image storing; mapping function; one-dimensional filtering algorithm; perspective spatial transformations; pipelined coordinate generation system; real-time implementation; scan-line order; source coordinates; stream processing architecture;

fLanguage

English

Journal_Title

Communications, Speech and Vision, IEE Proceedings I

Publisher

iet

ISSN

0956-3776

Type

jour

Filename

218067