Method and apparatus for the classification of surface features of an ear impression
US8069022B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2006 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Feb 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus is disclosed whereby a point on an ear impression model to be labeled is selected and a shape context is determined for that point. This shape context is then compared to average shape contexts for different regions on a reference ear impression model, also referred to herein as an ear impression shape atlas. A cost function is used to determine the minimum cost between the shape context for the selected point and one of the average shape contexts. Once the minimized cost is determined, the region label corresponding to the average shape context having a minimized cost is assigned to that point. In this way, points on the surface of an ear impression are classified and labeled as being located in regions corresponding to the regions on the ear impression shape atlas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.