Invention Grant
- Patent Title: Object tracking device capable of removing background noise and operating method thereof
- Patent Title (中): 能够去除背景噪声的对象追踪装置及其操作方法
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Application No.: US13947961Application Date: 2013-07-22
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Publication No.: US09234756B2Publication Date: 2016-01-12
- Inventor: Ming-Tsan Kao , Shu-Sian Yang , Han-Ping Cheng
- Applicant: PixArt Imaging Inc.
- Applicant Address: TW Hsin-Chu County
- Assignee: PIXART IMAGING INC
- Current Assignee: PIXART IMAGING INC
- Current Assignee Address: TW Hsin-Chu County
- Agency: Hauptman Ham, LLP
- Priority: TW101129853A 20120816
- Main IPC: G01C21/00
- IPC: G01C21/00 ; G06F3/041 ; G06F3/042

Abstract:
An optical tracking device includes a light source, an image sensor and a processing unit. The light source emits light at a lighting frequency. The image sensor outputs an operating image when the light source is being turned on and outputs a background image when the light source is being turned off. The processing unit is configured to obtain background information from the background image, calculate a differential image of the operating image and the background image, obtain object information from the differential image and compare the background information and the object information thereby removing background noise.
Public/Granted literature
- US20140048681A1 OBJECT TRACKING DEVICE AND OPERATING METHOD THEREOF Public/Granted day:2014-02-20
Information query