Method for determining the articulation angle of a combination
US11048962B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2018 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Aug 23, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2300/808
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method and to a device for determining the articulation angle of a combination, consisting of a towing vehicle and a trailer attached using a tongue, by identifying the hitch tongue using a digital back-up camera with variable exposure times, the following steps being carried out: a) recording a first color image of the rear environment of the towing vehicle, the color image being based on the HSY color space, b) analyzing the hue values, saturation values and brightness values of adjacent surfaces of a vehicle-environment region that is to be evaluated, c) determining the tongue from the first color image using an edge detection method in order to determine the articulation angle if the hue values, saturation values and brightness values of adjacent surfaces in the region that is to be evaluated are substantially equal, “substantially equal” meaning that the values of hue, saturation and brightness of adjacent surfaces differ by at most a first threshold in percent, d) recording a second color image in the HSY color space if in the first color image the hue values and saturation values of adjacent surfaces in the region that is to be evaluated are substa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.