Methods and devices for 3D object protection using surface subdivision
US9202064B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2013 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | May 14, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T1/0021
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of protecting a graphical object represented by a list of vertices and a list of surfaces, each surface being defined by a number N vertices. A device selects a surface S with N vertices; computes a new vertex d using a random or pseudo-random function; inserts the new vertex d into the list of vertices; creates N new surfaces S1-SN from the surface S and the new vertex d; and replaces the selected surface S by the new surfaces S1-SN in the list of surfaces. The device preferably iterates the method. The device may shuffle the list of vertices with the inserted vertices. Also provided is an unprotection method and corresponding devices and computer readable storage media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.