Systems and methods for encoding randomly distributed features in an object
US7577844B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2004 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Apr 8, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/805
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The described systems and methods described are directed at encoding randomly distributed features in an object. Randomly distributed features in an authentication object are determined. Data representing the randomly distributed features is compressed and encoded with a signature. A label is created and includes the authentication object and the encoded data. The data may be compressed by determining a probability density function associated with the authentication object. Vectors associated with the randomly distributed attributes are determined based, at least in part, on the probability density function. The vectors are encoded using an arithmetic coding algorithm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.