Vehicle vision system with lens pollution detection
US10021278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2016 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Jan 14, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2300/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vision system for a vehicle includes a camera having an imaging array having multiple columns of photosensing elements and multiple rows of photosensing elements, with the columns of photosensing elements being generally vertically orientated and the rows of photosensing elements being generally horizontally orientated relative to ground. The multiple rows of photosensing elements comprising top rows, middle rows and bottom rows. When the vehicle is moving, top row brightness values at top rows, middle row brightness values at middle rows, and bottom row brightness values at bottom rows are determined by processing of captured image data by a processor. Contrast of middle row brightness values compared to bottom row brightness values or top row brightness values is determined and, based on determined contrast of middle row brightness values compared to bottom row brightness values or top row brightness values, an at least partial blockage of the camera is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.