Title :
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
fDate :
6/1/1990 12:00:00 AM
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;
Journal_Title :
Communications, Speech and Vision, IEE Proceedings I
