公开(公告)号：US20160234405A1

公开(公告)日：2016-08-11

申请号：US15131595

申请日：2016-04-18

Applicant: MAGNA ELECTRONICS INC.

Inventor： Yuesheng Lu ,  Shawn T. Hunt

IPC: H04N5/217 ,  B60R1/00 ,  H04N7/18

CPC classification number: H04N5/2171 ,  B60R1/00 ,  B60R2300/30 ,  H04N7/18

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.

Abstract translation: 用于车辆的视觉系统包括具有成像阵列的相机，该成像阵列具有多列光敏元件和多行感光元件，其中光敏元件的列通常垂直定向，并且光敏元件列相对于地面大致水平取向。 多行光敏元件包括顶行，中间行和底行。 当车辆移动时，顶部行的顶行亮度值，中间行的中间行亮度值和底行的底行亮度值通过处理器处理捕获的图像数据来确定。 确定与底行亮度值或顶行亮度值相比较的中间行亮度值的对比度，并且基于与底行亮度值或顶行亮度值相比较的中间行亮度值的确定的对比度，相机的至少部分阻塞 被检测到。

公开(公告)号：US09319637B2

公开(公告)日：2016-04-19

申请号：US13851378

申请日：2013-03-27

Applicant: MAGNA ELECTRONICS INC.

Inventor： Yuesheng Lu ,  Shawn T. Hunt

IPC: H04N7/18 ,  B60R1/00 ,  H04N5/217

CPC classification number: H04N5/2171 ,  B60R1/00 ,  B60R2300/30 ,  H04N7/18

Abstract: A vision system for a vehicle includes a camera and a processor operable to process image data captured by the camera. When the vehicle is moving, the processor at least one of (a) reads a selected set of imager register values and compare a contrast of auto exposure control zones, and wherein, responsive to a determination that a range of contrast levels is less than a threshold level, the processor determines that there are contaminants at the lens or cover of the camera, and (b) monitors outputs of photosensing elements of the camera and, when the outputs fit a Gaussian distribution, the processor classifies the photosensing elements as blocked elements and, responsive to a determination that a number of the blocked photosensing elements is greater than a threshold level, the processor determines that there are contaminants at the lens or cover of the camera.

Abstract translation: 用于车辆的视觉系统包括相机和可操作以处理由相机捕获的图像数据的处理器。 当车辆移动时，处理器中的至少一个（a）读取所选择的一组成像器寄存器值并比较自动曝光控制区域的对比度，并且其中响应于确定对比度水平的范围小于 处理器确定在相机的透镜或盖子处存在污染物，并且（b）监视照相机的感光元件的输出，并且当输出拟合高斯分布时，处理器将光敏元件分类为阻挡元件 并且响应于确定多个阻挡光敏元件大于阈值水平，处理器确定在照相机的透镜或盖子处存在污染物。