| 发明名称 | Method and device for determining a visual range in daytime fog | ||
| 摘要 | A method is provided for determining a visual range in daytime fog, the method (800) including a step of reading in and a step of ascertaining. In the step of reading in, coordinates of at least one characteristic point of a brightness curve of a camera image of the fog are read in. The brightness curve represents brightness values of image points of the camera image along a reference axis of the camera image. In the step of ascertaining, a meteorological visual range in the camera image is ascertained using the coordinates, a meteorological contrast threshold, and a processing specification, in order to estimate the visual range in fog. The processing specification images location-dependent and/or direction-dependent scattered light through the fog in the camera image. | ||
| 申请公布号 | US9506859(B2) | 申请公布日期 | 2016.11.29 |
| 申请号 | US201414777188 | 申请日期 | 2014.02.24 |
| 申请人 | Robert Bosch GmbH | 发明人 | Stopper Ulrich;Lenor Stephan;Weber Stefan |
| 分类号 | G01N21/47;B60R16/023;G01N21/53;G06K9/00;G01J1/44;G01W1/00;G01N15/00;G01N15/06 | 主分类号 | G01N21/47 |
| 代理机构 | Norton Rose Fulbright US LLP | 代理人 | Norton Rose Fulbright US LLP ;Messina Gerard |
| 主权项 | 1. A method for determining a visual range in daytime fog, comprising: reading in coordinates of at least one characteristic point of a brightness curve of a camera image of the fog, the brightness curve representing brightness values of image points of the camera image along a reference axis of the camera image; and ascertaining a meteorological visual range in the camera image using the coordinates, a meteorological contrast threshold, and a processing specification, in order to estimate the visual range in fog, the processing specification being designed to model the brightness curve in accordance with at least one of location-dependent scattered light and direction-dependent scattered light through the fog in the camera image. | ||
| 地址 | Stuttgart DE | ||