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公开(公告)号:US20170131800A1
公开(公告)日:2017-05-11
申请号:US15155294
申请日:2016-05-16
Applicant: PIXART IMAGING INC.
Inventor: Guo-Zhen Wang , HSUAN-KU CHEN
IPC: G06F3/0354 , G06F3/03
CPC classification number: G06F3/03543 , G06F3/0304 , G06F3/0317
Abstract: The present disclosure illustrates an optical navigation apparatus with defocused image compensation function and a compensation circuit thereof The optical navigation apparatus comprises a light source, an image sensing circuit and a compensation circuit. The light source is configured to illuminate a work surface. The image sensing circuit captures a first image related to the work surface. The compensation circuit is configured to transform the first image and a point spread function of the light source into a first conversion result and a second conversion result in frequency domain, respectively, and then transform a result multiplied by the first conversion result and a reciprocal of the second conversion result from frequency domain to time domain to generate a second image.