公开(公告)号：US20150153904A1

公开(公告)日：2015-06-04

申请号：US14551742

申请日：2014-11-24

Applicant: PIXART IMAGING INC.

Inventor： HAN-PING CHENG ,  TZUNG-MIN SU ,  CHIH-HSIN LIN

IPC: G06F3/042 ,  G06K9/00 ,  G06F3/041

CPC classification number: G06F3/0421 ,  G06F3/0418 ,  G06K9/00389

Abstract: There is provided a processing method of an object image for an optical touch system includes the steps of: capturing, using a first image sensor, a first image frame containing a first object image; capturing, using a second image sensor, a second image frame containing a second object image; generating a polygon image according to the first image frame and the second image frame; and determining a short axis of the polygon image and at least one object information accordingly.

Abstract translation: 提供了一种用于光学触摸系统的对象图像的处理方法，包括以下步骤：使用第一图像传感器捕获包含第一对象图像的第一图像帧; 使用第二图像传感器捕获包含第二对象图像的第二图像帧; 根据第一图像帧和第二图像帧生成多边形图像; 并且相应地确定多边形图像的短轴和至少一个对象信息。

公开(公告)号：US20150054745A1

公开(公告)日：2015-02-26

申请号：US14536769

申请日：2014-11-10

Applicant: PIXART IMAGING INC.

Inventor： HAN-PING CHENG ,  CHAO-CHIEN HUANG

IPC: G06F3/033

CPC classification number: G06F3/0304 ,  G06F3/0346 ,  G06F3/0383

Abstract: A pointer positioning method for a handheld pointer device includes: capturing a first frame containing a reference point when the handheld pointer device updates a first tilt angle presently used to a second tilt angle; computing a first pointing coordinate according to the image position of the reference point in the first frame and the first tilt angle; computing a second pointing coordinate according to the image position of the reference point in the first frame and the second tilt angle; capturing a second frame containing the reference point to compute a third pointing coordinate according to the image position of the reference point in the second frame and the second tilt angle; generating a cursor parameter for controlling a display position of a cursor on a display apparatus according to the first pointing coordinate, the second pointing coordinate, and the third pointing coordinate.

Abstract translation: 一种用于手持式指针装置的指针定位方法包括：当手持式指针装置将当前使用的第一倾斜角更新为第二倾斜角时，捕获包含参考点的第一帧; 根据第一帧中的参考点的图像位置和第一倾斜角度来计算第一指向坐标; 根据第一帧中的参考点的图像位置和第二倾斜角计算第二指示坐标; 捕获包含所述参考点的第二帧，以根据所述参考点在所述第二帧中的图像位置和所述第二倾斜角来计算第三指示坐标; 生成用于根据第一指示坐标，第二指示坐标和第三指示坐标来控制显示装置上的光标的显示位置的光标参数。

公开(公告)号：US20140247214A1

公开(公告)日：2014-09-04

申请号：US14273523

申请日：2014-05-08

Applicant: PIXART IMAGING INC.

Inventor： HAN-PING CHENG ,  CHAO-CHIEN HUANG ,  CHIA-CHEUN LIANG

IPC: G06F3/033

CPC classification number: G06F3/033 ,  G06F3/017 ,  G06F3/0304 ,  G06F3/0346

Abstract: An exemplary embodiment of the present disclosure provides a handheld pointer device and a tilt angle adjustment method thereof. The tilt angle adjustment method includes the following steps. Images corresponding to the position of a reference point are captured as the handheld pointer device pointing toward the reference point to generate a plurality of frames. Whether the reference point has substantially moved is subsequently determined based on the plurality of frames. When determines that the reference point has not substantially moved, causes an accelerometer unit of the handheld pointer device to detect the accelerations thereof over various axes so as to update a first tilt angle being used currently to a second tilt angle, accordingly. The handheld pointer device may thus accurately and efficiently calculate the relative position of the reference point with the appropriate tilt angle of the handheld pointer device used.

Abstract translation: 本公开的示例性实施例提供了一种手持式指针装置及其倾斜角调整方法。 倾斜角度调整方法包括以下步骤。 捕获与参考点的位置相对应的图像作为指向参考点的手持式指针装置，以生成多个帧。 随后基于多个帧来确定参考点是否已经基本上移动。 当确定参考点没有实质上移动时，引起手持式指针装置的加速度计单元检测其在各种轴上的加速度，从而相应地将当前使用的第一倾斜角度更新为第二倾斜角度。 因此，手持式指针装置可以使用所使用的手持式指针装置的适当倾斜角精确有效地计算参考点的相对位置。