公开(公告)号：US20110128387A1

公开(公告)日：2011-06-02

申请号：US13057073

申请日：2009-08-05

申请人： Nicholas R. Gans ,  Warren Dixon

发明人： Nicholas R. Gans ,  Warren Dixon

IPC分类号： H04N5/225

CPC分类号： H04N7/181

摘要： In one embodiment, a system and method for maintaining objects within a camera field of view include identifying constraints to be enforced, each constraint relating to an attribute of the viewed objects, identifying a priority rank for the constraints such that more important constraints have a higher priority that less important constraints, and determining the set of solutions that satisfy the constraints relative to the order of their priority rank such that solutions that satisfy lower ranking constraints are only considered viable if they also satisfy any higher ranking constraints, each solution providing an indication as to how to control the camera to maintain the objects within the camera field of view.

摘要翻译： 在一个实施例中，用于维护照相机视野内的对象的系统和方法包括识别要强制执行的约束，与所查看对象的属性有关的每个约束，识别约束的优先等级，使得更重要的约束具有更高的约束 优先级较小的重要约束，以及确定满足相对于其优先级排序的约束的解的集合，使得满足较低等级约束的解只有在满足任何更高等级的约束的情况下才被认为是可行的，每个解提供指示 关于如何控制摄像机维护摄像机视野内的物体。

公开(公告)号：US08401240B2

公开(公告)日：2013-03-19

申请号：US12447782

申请日：2007-11-07

申请人： Warren E. Dixon ,  Nicholas R. Gans ,  Sumit Gupta

发明人： Warren E. Dixon ,  Nicholas R. Gans ,  Sumit Gupta

IPC分类号： G06K9/00

CPC分类号： G01S11/12 ,  G06T7/246 ,  G08G1/052 ,  G08G1/16

摘要： A system for passively determining a speed of moving vehicles includes a single imaging device (103) for acquiring a plurality of images at a first time and at least at one second later time, wherein each image includes a moving vehicle (406) on a vehicle pathway (402) and at least one fixed object (404) proximate to the vehicle, defining a first plane (π1) intersecting an adjacent portion of the vehicle pathway (402), wherein no geometric lengths of the vehicle (406) are known a priori. The system can also include a processor (121) operable to receive data associated with the images and determine a speed of the vehicle (406) in the images, wherein the processor (121) estimates at least one geometric length of the vehicle (406) by applying homography using the plurality of images, and where the processor (121) determines a speed of the vehicle (406) from the plurality of images and the estimated geometric length using a velocity estimation method.

摘要翻译： 用于被动地确定移动车辆的速度的系统包括用于在第一时间和至少一秒钟时间获取多个图像的单个成像装置（103），其中每个图像包括车辆上的移动车辆（406） 路径（402）和邻近车辆的至少一个固定物体（404），限定与车辆路径（402）的相邻部分相交的第一平面（＆amp; 1），其中车辆（406）的几何长度不在 先验知道 系统还可以包括可操作以接收与图像相关联的数据并确定图像中的车辆（406）的速度的处理器（121），其中处理器（121）估计车辆（406）的至少一个几何长度， 通过使用多个图像应用单应性，并且处理器（121）使用速度估计方法从多个图像和估计的几何长度确定车辆的速度（406）。

公开(公告)号：US09288449B2

公开(公告)日：2016-03-15

申请号：US13057073

申请日：2009-08-05

申请人： Nicholas R. Gans ,  Warren Dixon

发明人： Nicholas R. Gans ,  Warren Dixon

IPC分类号： H04N5/225 ,  H04N7/18

CPC分类号： H04N7/181

摘要： In one embodiment, a system and method for maintaining objects within a camera field of view include identifying constraints to be enforced, each constraint relating to an attribute of the viewed objects, identifying a priority rank for the constraints such that more important constraints have a higher priority that less important constraints, and determining the set of solutions that satisfy the constraints relative to the order of their priority rank such that solutions that satisfy lower ranking constraints are only considered viable if they also satisfy any higher ranking constraints, each solution providing an indication as to how to control the camera to maintain the objects within the camera field of view.

摘要翻译： 在一个实施例中，用于维护照相机视野内的对象的系统和方法包括识别要强制执行的约束，与所查看对象的属性有关的每个约束，识别约束的优先等级，使得更重要的约束具有更高的约束 优先级较小的重要约束，以及确定满足相对于其优先级排序的约束的解的集合，使得满足较低等级约束的解只有在满足任何更高等级的约束的情况下才被认为是可行的，每个解提供指示 关于如何控制摄像机维护摄像机视野内的物体。

公开(公告)号：US20100111365A1

公开(公告)日：2010-05-06

申请号：US12447782

申请日：2007-11-07

申请人： Warren E. Dixon ,  Nicholas R. Gans ,  Sumit Gupta

发明人： Warren E. Dixon ,  Nicholas R. Gans ,  Sumit Gupta

IPC分类号： G06K9/00

CPC分类号： G01S11/12 ,  G06T7/246 ,  G08G1/052 ,  G08G1/16

摘要： A system for passively determining a speed of moving vehicles includes a single imaging device (103) for acquiring a plurality of images at a first time and at least at one second later time, wherein each image includes a moving vehicle (406) on a vehicle pathway (402) and at least one fixed object (404) proximate to the vehicle, defining a first plane (π1) intersecting an adjacent portion of the vehicle pathway (402), wherein no geometric lengths of the vehicle (406) are known a priori. The system can also include a processor (121) operable to receive data associated with the images and determine a speed of the vehicle (406) in the images, wherein the processor (121) estimates at least one geometric length of the vehicle (406) by applying homography using the plurality of images, and where the processor (121) determines a speed of the vehicle (406) from the plurality of images and the estimated geometric length using a velocity estimation method.

摘要翻译： 用于被动地确定移动车辆的速度的系统包括用于在第一时间和至少一秒钟时间获取多个图像的单个成像装置（103），其中每个图像包括车辆上的移动车辆（406） 路径（402）和邻近车辆的至少一个固定物体（404），限定与车辆路径（402）的相邻部分相交的第一平面（＆amp; 1），其中车辆（406）的几何长度不在 先验知道 系统还可以包括可操作以接收与图像相关联的数据并确定图像中的车辆（406）的速度的处理器（121），其中处理器（121）估计车辆（406）的至少一个几何长度， 通过使用多个图像应用单应性，并且处理器（121）使用速度估计方法从多个图像和估计的几何长度确定车辆的速度（406）。