Device and method for fast computation of region based image features
US8184915B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2007 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Mar 21, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/507
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device and method for efficient computation of statistical information, such as a mean, co-variance, or histogram of the image pixels, over discrete image regions. The computation employs integral computations to determine the statistical information over image regions of arbitrary shape, including irregular polygonal shaped regions. The integral computations are simplified by categorizing corner points of boundaries of image regions. The computation can be applied to calculate descriptors or signatures of persons or objects within an image. The computation also has a low computational cost enabling fast calculation of image statistics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.