Optical navigation apparatus with defocused image compensation function and compensation circuit thereof

    公开(公告)号:US10162433B2

    公开(公告)日:2018-12-25

    申请号:US15155294

    申请日:2016-05-16

    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.

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