Digital filter and method of tracking a structure extending in three spatial dimensions
US5724435A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1996 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Dec 18, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30101
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A tracking technique which tracks a structure in three-dimensional data is disclosed. The tracking technique uses a geometric shape to model the structure to be tracked. Tracking is achieved by altering the orientation (and perhaps scale) of the geometric shape at a given three-dimensional point until it best fits the structure being tracked. Using this best fit information, a subsequent point within the structure being tracked can be identified. The tracking continues by thereafter altering the orientation (and perhaps scale) of the geometric shape at or near the subsequent point until a best fit is identified. The invention can be implemented as a digital filter, a tracking system or a method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.