公开(公告)号：US20060280335A1

公开(公告)日：2006-12-14

申请号：US11457829

申请日：2006-07-17

Applicant: Alberto Tomita ,  Takaaki Murao ,  Tomio Echigo ,  Ajith Narayanan

Inventor： Alberto Tomita ,  Takaaki Murao ,  Tomio Echigo ,  Ajith Narayanan

IPC: G06K9/00

CPC classification number: H04N19/20 ,  G06T7/246 ,  G06T7/251 ,  G06T2207/10016 ,  G06T2207/30221 ,  G06T2207/30236 ,  G06T2207/30241 ,  H04N19/503 ,  H04N19/553

Abstract: The invention provide methods and apparatus for effectively identifying the occlusion of objects, such as persons, having a high degree of freedom. In an example embodiment, after initialization, an image is input, and an image region is extracted from image data. The distance is employed that is obtained when the shape of a two-dimensional histogram in the color space is transformed into the feature space. A graph is formed by using, the regions between the frames. A confidence factor is provided and image features are provided as weights to the edges that connect the nodes. Processing is performed, and the confidence factor is examined. A connection judged less possible to be a path is removed. When there is only one available connection for the occlusion point, this connection is selected.

Abstract translation: 本发明提供了用于有效地识别具有高自由度的物体（例如人）的遮挡的方法和装置。 在示例实施例中，在初始化之后，输入图像，并且从图像数据中提取图像区域。 当将颜色空间中的二维直方图的形状变换为特征空间时，采用距离。 通过使用帧之间的区域形成图形。 提供置信因子，并且图像特征被提供为连接节点的边缘的权重。 进行处理，并检查置信因子。 取消不太可能成为路径的连接。 当遮挡点只有一个可用连接时，选择此连接。

公开(公告)号：US20050192683A1

公开(公告)日：2005-09-01

申请号：US11122633

申请日：2005-05-05

Applicant: Ajith Narayanan

Inventor： Ajith Narayanan

IPC: H04L12/28 ,  G06F3/033 ,  G08C17/00 ,  H04B7/26 ,  H04Q7/34 ,  H04Q7/38 ,  G05B11/01

CPC classification number: G06F3/0346 ,  G08C17/00 ,  G08C2201/41 ,  G08C2201/91

Abstract: A device network to process signals has target devices, selecting devices that are movable relative to the target devices, and controllers. The controllers are in communication with the target devices and the selecting devices. Each of the selecting devices has a position sensor and an orientation sensor to provide spatial and angular co-ordinates of position and orientation when pointing to a target device and upon receiving a user input. Each of the selecting devices also has a signal processor to generate a control signal having the position and orientation data. This control signal is then transmitted by a transmitter, via a radio frequency channel, to a controller. Upon receiving the control signal, the controller determines whether, for example, a target device has been selected by a selecting device by comparison of the orientation data with a derived orientation based on the position data and the known position of the target devices.