Distance detection system for vehicles
US5307136A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1992 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Oct 14, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2013/0081
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An automobile distance detection system includes an image camera system which photographs an object which exists in a required range external to an automobile, from a plurality of different directions and obtains a plurality of pictures, and a picture processing unit which processes the plural number of pictures photographed by the camera system and outputs a distance distribution for an entire picture. The image processing unit includes a coincidence calculation element which performs high-speed calculation of a degree of coincidence for each required region, and corresponding to the plural number of pictures photographed by the camera system, and a discrepancy amount determination element determines discrepancy amounts corresponding to the plural number of pictures on the basis of a minimum value for the coincidence, as information relating to the distance distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.