发明授权
- 专利标题： Image invariant optical speckle capturing device and method
- 专利标题（中）： 图像不变光学斑点捕获装置及方法
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申请号： US11998406申请日： 2007-11-30
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公开(公告)号： US07715016B2公开(公告)日： 2010-05-11
- 发明人: Yi-Yuh Hwang , Ming Chen , Shin-I Ma , Chin-Der Hwang , Mau-Ran Wang , Wen-Chen Huang
- 申请人： Yi-Yuh Hwang , Ming Chen , Shin-I Ma , Chin-Der Hwang , Mau-Ran Wang , Wen-Chen Huang
- 申请人地址： TW Taoyuan County
- 专利权人： Chung Shan Institute of Science and Technology
- 当前专利权人： Chung Shan Institute of Science and Technology
- 当前专利权人地址： TW Taoyuan County
- 代理机构： Rabin & Berdo, P.C.
- 主分类号： G01B11/02
- IPC分类号： G01B11/02 ; G06F3/033 ; G09G5/08
摘要：
An image invariant optical speckle capturing device and method. A highly coherent light is used to illuminate a surface and is scattered by the surface, and is captured from the direction with a ±10° from the angle of specular reflection. A light restrictive module is designed to confine the angular field of view of the sensor, when the speckle capturing device has a relative motion with respect to the surface, the speckle only move on the image but the shape and the intensity are almost keep constant, that is favorable for high accuracy optical pattern recognition and positioning.