Title :
Gradient-based optical flow: a critical review
Author_Institution :
Signal Processing Res. Centre, Queensland Univ. of Technol., Brisbane, Qld., Australia
Abstract :
Optical flow, or the distribution of the apparent movement of the brightness pattern in an image, proved to be an important tool in image sequence analysis. A class of techniques that received a special interest for its simplicity and computational efficiency is the one based on the idea of conservation of image intensity. This class of techniques is known as the gradient-based techniques and is composed of two sub-classes, namely, global and local. This paper presents a critical review from the theoretical point of the main directions within the global subclass
Keywords :
brightness; gradient methods; image motion analysis; image sequences; smoothing methods; apparent movement distribution; brightness pattern; computational efficiency; global smoothness techniques; global subclass; gradient-based optical flow; image intensity conservation; image sequence analysis; local subclass; Brightness; Computational efficiency; Equations; Image motion analysis; Image sequence analysis; Layout; Lighting; Optical computing; Optical reflection; Optical signal processing;
Conference_Titel :
Signal Processing and Its Applications, 1999. ISSPA '99. Proceedings of the Fifth International Symposium on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
1-86435-451-8
DOI :
10.1109/ISSPA.1999.818213
