Sensor system for determining distance information based on stereoscopic images
US9513108B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2015 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Jun 19, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30252
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A distance measurement method determines the distance of a sensor system to a physical object. The method includes obtaining at least a pair of stereoscopic images including the physical object, and applying to each element of at least a portion of a first image of the pair of stereoscopic images and to each element of at least a portion of a second image of the pair of stereoscopic images at least two differently shaped or sized filters, respectively. Correlation values for each filter applied to the first and second image are determined, and, combined correlation values are determined for the applied filters by combining the determined correlation values for each applied filter. The combined correlation values are evaluated for different disparities for an extremum value of the combined correlation values. A distance value to the physical object is calculated and output based on a disparity value at which the extremum occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.