A Pyramid Approach to Motion Tracking
β Scribed by Jason Z. Zhang; Q.M. Jonathan Wu
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 811 KB
- Volume
- 7
- Category
- Article
- ISSN
- 1077-2014
No coin nor oath required. For personal study only.
β¦ Synopsis
T his paper presents a multiresolution approach to visual motion tracking. In the approach, the foveation mechanism of the human visual system is used to model the multiresolution information perception algorithms of a Transputer-based pyramid visual tracking system. The video images of a moving target are transformed into pyramidal data structures, each of those images consists of multiple image layers with different resolutions by a Gaussian pyramid generation algorithm. The tracking of a moving target over an image sequence is accomplished by performing a foveal search that is based on an iterative intensity pattern correlation along the multiple resolution levels of the Gaussian pyramids of two successive images. Analyses are given as to the efficiency and accuracy of our tracking algorithm, showing that the algorithm is over 160 times faster than conventional mono-resolution tracking methods, with the tracking error within one pixel. To demonstrate the superiority of the multiresolution tracking algorithm in the connection to parallel computation, a scheme for mapping the tracking algorithm into a Transputer-based pyramidal parallel computing structure is proposed in the paper. Experimental results demonstrate good performance of the proposed approach.
π SIMILAR VOLUMES
## Abstract An approach to volume tracking three materials is presented that, in contrast with the soβcalled βonionβskinβ methodology, assumes the existence of a βtriple pointβ at which two interfaces between three materials intersect. The reconstruction of any cell that contains three materials is
The point at which they meet (the triple junction) has prescribed angles which can be shown [12] to be defined by A coupled level set method for the motion of multiple junctions (of, e.g., solid, liquid, and grain boundaries), which follows the gradient flow for an energy functional consisting of su
Multiresolution motion analysis has gained considerable research interest as a unified framework to facilitate a variety of motion editing tasks. Within this framework, motion data are represented as a collection of coefficients that form a coarse-to-fine hierarchy. The coefficients at the coarsest