Feature data compression device, multi-directional face detection system and detection method thereof
US8421877B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2011 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | Jan 2, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/611
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A feature data compression device, a multi-directional face detection system and a detection method thereof. The feature data compression device comprises a mirror unit and a transposition unit. The mirror unit compares and computes a plurality of feature values each other to obtain a position of each mutual symmetric feature value and abandoning one of each two symmetric feature values to form first mirrored data, or to obtain a position of the feature value with the highest weight value to form second mirrored data. The transposition unit transposes at least one image template with an angle based on a transposition table for obtaining transposed data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.