Paper Info
Title
MOTION ESTIMATION FOR VIDEO BANDWIDTH COMPRESSION USING A HETEROGENEOUS PYRAMID IMAGE PROCESSING ARCHITECTURE
Abstract
In many image processing contexts there is a requirement for some form of motion estimation. A number of stra- tegies exist, differing in the accuracy and granularity of the motion estimate and in their computational require- ments. The simplest and most coarse-grained scheme is 'block' motion estimation, where the current frame is divided into blocks of pixels and for each block an esti- mate of its most likely motion is computed by reference to a neighbourhood in the previous frame. Such coarse motion estimates are of utility in situations where a fairly approximate but fast trajectory estimate is required. Examples are motion-compensated interframe predictive coders and various aerospace applications. The block motion estimator is simple and amenable to parallel com- putation, making it feasible for implementation at real- time frame rates. This paper describes the mapping of the block motion estimator on to the lower levels of the Wamick Pyramid Machine (WPM), a heterogeneous pyramid architecture for parallel image processing I understanding which is currently under development at the University of Warwick. The paper describes how the required computations are performed and presents simu- lated timings. The advantages of the multi-SIMD archi- tecture of the WPM are illustrated.
Year
Venue
Keywords
1988
MVA
real time,motion estimation,image processing
Field
DocType
Citations 
Computer vision,Block-matching algorithm,Quarter-pixel motion,Computer science,Image processing,Inter frame,Artificial intelligence,Pyramid,Frame rate,Motion estimation,Estimator
Conference
1
PageRank 
References 
Authors
0.36
0
7
Name
Order
Citations
PageRank
Nudd, Graham R.121220.00
S. C. Clippingdale210.70
R. M. Howarth351.20
T. J. Atherton4133.10
N. D. Francis551.88
G. J. Vaudin651.20
D. W. Walton710.36