학술논문
Phase-based image motion estimation and registration
Document Type
Conference
Author
Source
1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258) Acoustics, speech, and signal processing Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on. 6:3345-3348 vol.6 1999
Subject
Language
ISSN
1520-6149
Abstract
Conventional gradient methods (optical flow), for motion estimation assume intensity conservation between frames. This assumption is often violated in real applications. The remedy is a novel method that computes constraints on the local motion. These constraint are given on the same form as in conventional methods. Thus, it can directly substitute the gradient method in most applications. Experiments indicate a superior accuracy, even on synthetic images where the intensity conservation assumption is valid. The conventional gradient methods seem obsolete.