公开(公告)号：US08727207B1

公开(公告)日：2014-05-20

申请号：US08959109

申请日：1997-10-23

Applicant: Donald W. Church ,  Douglas George Pincock ,  Theodore Gerard Bushnik ,  John Roderick Campbell ,  Gregory Emile Chauvin

Inventor： Donald W. Church ,  Douglas George Pincock ,  Theodore Gerard Bushnik ,  John Roderick Campbell ,  Gregory Emile Chauvin

IPC: G07B15/00

CPC classification number: G07F17/24 ,  G07C1/30

Abstract: A proximity detector for detecting the presence of a coin or token in a coin chute, comprising a pair of axially aligned coils disposed on opposed sides of the chute; a common-emitter amplifier having a base and a collector providing a detector output, one of the coils being connected to the collector and the other of the coils being connected to the base.

Abstract translation: 一种接近检测器，用于检测硬币滑槽中存在的硬币或令牌，包括设置在滑槽相对侧上的一对轴向对齐的线圈; 具有基极和集电极提供检测器输出的共发射极放大器，其中一个线圈连接到集电极，另一个线圈连接到基座。

公开(公告)号：US07602944B2

公开(公告)日：2009-10-13

申请号：US11398538

申请日：2006-04-06

Applicant: John Roderick Campbell ,  Wayne Lawrence Dustin ,  Christian Joseph Eric Montminy ,  Michael Peter Baynger ,  Alexander Scott Campbell

Inventor： John Roderick Campbell ,  Wayne Lawrence Dustin ,  Christian Joseph Eric Montminy ,  Michael Peter Baynger ,  Alexander Scott Campbell

IPC: G06K9/00 ,  H04B1/66

CPC classification number: H04N5/144 ,  G06K9/00778 ,  G06T7/215 ,  G06T7/254 ,  G07G3/003

Abstract: A method and system are provided for counting moving objects in a digital video stream. In contrast to known computationally-expensive methods, areas of motion are determined by threshold subtracting a current video frame from a short term average video scene. An object box surrounding an object is determined by threshold subtracting the current video frame from a long term average video scene. Coordinates of the moving object are identified by associating the area of motion with the object box, if it overlaps the area of motion, to define a moving object box. An event counter can be incremented when the moving object box is in a buffer zone in the current frame, and was in a detection zone in an earlier frame, and was initially detected in a buffer zone on the opposite side of the detection zone.

Abstract translation: 提供了一种用于对数字视频流中的移动物体进行计数的方法和系统。 与已知的计算昂贵的方法相比，通过从短期平均视频场景减去当前视频帧来确定运动区域。 通过从长期平均视频场景减去当前视频帧的阈值来确定对象周围的对象框。 移动物体的坐标通过将运动区域与对象盒相关联来识别，如果它与运动区域重叠，则定义移动物体盒。 当移动对象框位于当前帧的缓冲区中时，事件计数器可以增加，并且处于较早帧中的检测区，并且最初在检测区的相对侧的缓冲区中检测到。