公开(公告)号：US20020054210A1

公开(公告)日：2002-05-09

申请号：US09852487

申请日：2001-05-10

Applicant: Nestor Traffic Systems, Inc.

Inventor： Michael T. Glier ,  Douglas L. Reilly ,  Michael T. Tinnemeier ,  Steven I. Small ,  Steven S. Hsieh ,  Randall T. Sybel ,  Mark D. Laird

IPC: H04N007/18

CPC classification number: G08G1/164 ,  G08G1/04 ,  G08G1/08 ,  G08G1/087 ,  H04N7/183

Abstract: A traffic sensor system for detecting and tracking vehicles is described. The disclosed system may be employed as a traffic light violation prediction system for a traffic signal, and as a collision avoidance system. A video camera is employed to obtain a video image of a section of a roadway. Motion is detected through changes in luminance and edges in frames of the video image. Predetermined sets of pixels (nulltilesnull) in the frames are designated to be in either an nullactivenull state or an nullinactivenull state. A tile becomes active when the luminance or edge values of the pixels of the tile differ from the respective luminance or edge values of a corresponding tile in a reference frame in accordance with predetermined criteria. The tile becomes inactive when the luminance or edge values of the pixels of the tile do not differ from the corresponding reference frame tile in accordance with the predetermined criteria. Shape and motion of groups of active tiles (nullquantanull) are analyzed with software and a neural network to detect and track vehicles.

Abstract translation: 描述用于检测和跟踪车辆的交通传感器系统。 所公开的系统可以用作交通信号灯的交通灯违规预测系统，也可以用作防撞系统。 采用摄像机来获取道路的一部分的视频图像。 通过视频图像的帧中的亮度和边缘的变化来检测运动。 帧中的预定像素组（“瓦片”）被指定为处于“活动”状态或“非活动”状态。 当瓦片的像素的亮度或边缘值根据预定标准与参考帧中的相应瓦片的相应亮度或边缘值不同时，瓦片变为活动的。 当瓦片的像素的亮度或边缘值根据预定标准与对应的参考帧瓦片不相同时，瓦片变得不活动。 使用软件和神经网络分析活动瓦片组（“量子”）的形状和运动，以检测和跟踪车辆。