Derivation of optical flow using a spatiotemporal-frequency approach
Computer Vision, Graphics, and Image Processing
Computation of component image velocity from local phase information
International Journal of Computer Vision
ICIP '97 Proceedings of the 1997 International Conference on Image Processing (ICIP '97) 3-Volume Set-Volume 1 - Volume 1
Hi-index | 0.00 |
Temporal aliasing artifacts are common in both computer generated and natural motion sequences. One of the most striking manifestations of temporal aliasing is the apparent reversal of motion commonly referred to as the "wagon wheel effect." In this paper, we examine temporal aliasing from the standpoint of joint spatiotemporal/spatiotemporal-frequency representations. We show that apparent motion reversal can be explained using these representations, and demonstrate that a motion estimation algorithm based on such a representation (the 3-D Gabor transform) can accurately predict this illusion.