Method of extracting ridge data and apparatus and method for tracking joint motion of object
US9460364B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2014 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Dec 8, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/752
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of extracting ridge data includes selecting a point in the contour of an object from an image of the object, calculating a chamfer distance of the point in the contour, and determining whether the point in the contour is a ridge point based on relationships between the chamfer distance and chamfer distances of points in the contour adjacent to the point in the contour. A method of tracking a joint motion of an object includes acquiring initial information of the object including information on at least one ridge region representing a distribution of ridge points of the object, and tracking the joint motion of the object from temporally consecutive images of the object based on the initial information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.