Method and apparatus for estimating inter-vehicle distance using radar and camera
US6990216B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2001 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Oct 8, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/93271
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In method and apparatus for estimating an inter-vehicle distance of an automotive vehicle to a preceding vehicle which is running ahead of the vehicle, the inter-vehicle distance is detected using a radar, a video image of a vehicular forwarding zone is photographed, a plurality of edges including at least a part of the preceding vehicle are detected from the photographed vide image, an inter-edge spacing of mutually opposing edges from the detected image is detected, and a present inter-vehicle distance of the vehicle to the preceding vehicle at a present time point is calculated from a previous inter-vehicle distance calculated thereby at a previous time point at which the inter-edge spacing of the mutually opposing edges has previously been detected and the inter-edge spacings at the previous time point and at the present time point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.