公开(公告)号：US20200226764A1

公开(公告)日：2020-07-16

申请号：US16831825

申请日：2020-03-27

Applicant: PixArt Imaging Inc.

Inventor： Keen-Hun LEONG ,  Boon-How KOK ,  Dennis DOMINIC DONALD

IPC: G06T7/20 ,  B60W30/00 ,  B62D15/02 ,  G01C25/00 ,  G01C22/00 ,  H04N5/247 ,  G06F3/0362

Abstract: An optical sensor system mounted in a wheel arch of a car for determining trajectory of the car includes: a first optical sensor mounted in the wheel arch above a wheel and located behind a first clear casing that does not touch the wheel; and a second optical sensor mounted in the wheel arch on one side of the wheel and located behind a second clear casing that does not touch the wheel. The first optical sensor and second optical sensor perform a plurality of counts corresponding to respectively capturing a plurality of images of the wheel. The captured images are compared with a reference image to determine a 2D displacement of the wheel from its original position. The trajectory of the car is determined by calculating a turning degree of the wheel according to a trigonometric manipulation of the measured 2D displacement.

公开(公告)号：US20170061226A1

公开(公告)日：2017-03-02

申请号：US15347309

申请日：2016-11-09

Applicant: PIXART IMAGING INC.

Inventor： Boon-How KOK ,  Keen-Hun LEONG ,  Ching-Geak CHAN ,  Chiang-Hee LIM ,  Chu-Leik HO ,  Hsin-Chia CHEN ,  Yen-Min CHANG

IPC: G06K9/20 ,  G06K9/00 ,  G06T7/00 ,  G06K9/46

CPC classification number: G06K9/2036 ,  G01D5/34 ,  G06F3/0312 ,  G06K9/00986 ,  G06K9/2027 ,  G06K9/4661 ,  H04N5/2256 ,  H04N19/00

Abstract: The present disclosure is related to an optical encoder which is configured to provide precise coding reference data by feature recognition technology. To apply the present disclosure, it is not necessary to provide particular dense patterns on a working surface. The precise coding reference data can be generated by detecting surface features of the working surface.

Abstract translation: 本公开涉及一种光学编码器，其被配置为通过特征识别技术提供精确的编码参考数据。 为了应用本公开，不需要在工作表面上提供特定的致密图案。 可以通过检测工作表面的表面特征来产生精确的编码参考数据。