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    Dual-aperture ranging system
    51.
    发明授权
    Dual-aperture ranging system 有权

    公开(公告)号：US10778915B2

    公开(公告)日：2020-09-15

    申请号：US16435881

    申请日：2019-06-10

    Applicant: PixArt Imaging Inc.

    Inventor： Guo-Zhen Wang ,  Yi-Lei Chen

    IPC: H04N5/33 ,  H04N5/357 ,  H04N5/225 ,  G06T7/571

    Abstract: A ranging system including a first aperture stop, a second aperture stop, an image sensor and a processing unit is provided. The first aperture stop includes a sheet of IR-cut filter material. The second aperture stop includes a sheet of opaque material. The image sensor receives light passing through the first and second aperture stops to output an image frame. The processing unit respectively calculates a convolution between a first color subframe of the image frame and a plurality of first blur kernels to generate a plurality of blurred first frames, respectively calculates a convolution between a second color subframe of the image frame and a plurality of second blur kernels to generate a plurality of blurred second frames, and performs a best matching between the blurred first frames and the blurred second frames.

    Image recognition method and system based on deep learning
    52.
    发明授权
    Image recognition method and system based on deep learning 有权

    公开(公告)号：US10726291B2

    公开(公告)日：2020-07-28

    申请号：US15670511

    申请日：2017-08-07

    Applicant: PIXART IMAGING INC.

    Inventor： Guo-Zhen Wang

    IPC: G06K9/46 ,  G06N20/00 ,  G06K9/00 ,  G06K9/62 ,  G06N3/04 ,  G06N3/08

    Abstract: The present disclosure discloses an image recognition method and system based on deep learning. The image recognition method trains a recognizing engine for high resolution images and a recognizing engine for low resolution image separately. The two recognizing engines generate two independent feature groups specifically for high resolution and low resolution images respectively. A categorizing engine categorizes a testing image to a high resolution mode or a low resolution mode, and then the testing image is recognized by the appropriate recognizing engine. Therefore, the present disclosure increases the accuracy of image recognition under various conditions.

    IMAGE SENSOR, IMAGE SENSING SYSTEM, IMAGE SENSING METHOD AND MATERIAL RECOGNITION SYSTEM
    53.
    发明申请
    IMAGE SENSOR, IMAGE SENSING SYSTEM, IMAGE SENSING METHOD AND MATERIAL RECOGNITION SYSTEM 审中-公开

    公开(公告)号：US20200112663A1

    公开(公告)日：2020-04-09

    申请号：US16153842

    申请日：2018-10-08

    Applicant: PixArt Imaging Inc.

    Inventor： Guo-Zhen Wang

    IPC: H04N5/235 ,  H01L27/146 ,  G01N23/04 ,  H04N5/225

    Abstract: An image sensor, comprising: a first sensing region having a first size, configured to sense first kind of light having a first range of wavelengths; and a second sensing region having a second size, configured to sense second kind of light having a second range of wavelengths, wherein the first size and the second size are different, wherein at least portion of the first range of wavelengths and at least portion of the second range of wavelengths are different. The image sensor has a first light sensitivity level for sensing the first kind of light and has a second light sensitivity level for sensing the second kind of light, and a relation between the first size and the second size corresponds to a relation between the first light sensitivity level and the second light sensitivity level.

    PARTICLE CONCENTRATION SENSING METHOD AND PORTABLE ELECTRONIC APPARATUS APPLYING THE PARTICLE CONCENTRATION SENSING METHOD
    55.
    发明申请
    PARTICLE CONCENTRATION SENSING METHOD AND PORTABLE ELECTRONIC APPARATUS APPLYING THE PARTICLE CONCENTRATION SENSING METHOD 审中-公开

    公开(公告)号：US20190162642A1

    公开(公告)日：2019-05-30

    申请号：US15822225

    申请日：2017-11-27

    Applicant: PixArt Imaging Inc.

    Inventor： Guo-Zhen Wang

    IPC: G01N15/06 ,  G01N21/53

    Abstract: A portable electronic apparatus can sense particle concentration, comprising: a motion detector, configured to detect a motion of the portable electronic apparatus; a first light source, configured to emit first light, wherein first scattered light is generated while the first light emitting particles in air; a light sensor, configured to sense the first scattered light; and a processor, configured to calculate a first particle concentration based on the motion and the first scattered light sensed by the light sensor. Via such apparatus, the particle concentration can be calculated without a fan, and the accuracy for calculating particle concentration can be increased if more than one light source is employed.

    Optical navigation apparatus with defocused image compensation function and compensation circuit thereof
    56.
    发明授权
    Optical navigation apparatus with defocused image compensation function and compensation circuit thereof 有权

    公开(公告)号：US10162433B2

    公开(公告)日：2018-12-25

    申请号：US15155294

    申请日：2016-05-16

    Applicant: PIXART IMAGING INC.

    Inventor： Guo-Zhen Wang ,  Hsuan-Ku Chen

    IPC: G06K9/40 ,  G06F3/0354 ,  G06F3/03

    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.

    Optical calibration system adapted for optical distance measurement system
    59.
    发明授权
    Optical calibration system adapted for optical distance measurement system 有权

    公开(公告)号：US09885779B2

    公开(公告)日：2018-02-06

    申请号：US15359911

    申请日：2016-11-23

    Applicant: PIXART IMAGING INC.

    Inventor： Guo-Zhen Wang

    IPC: G01B11/14 ,  G01S7/497 ,  G01S17/08

    CPC classification number: G01B11/14 ,  G01B3/30 ,  G01B11/026 ,  G01B11/2504 ,  G01B21/042

    Abstract: An optical calibration system including a calibration module, a light source, an optical sensing device and a calculation module is provided. The calibration module includes a calibration plane and a plurality of calibration structures between the calibration plane and the light source, wherein the calibration structures are disposed at predetermined calibration positions. The light source projects a linear light section toward the calibration module. The optical sensing device senses reflected light from the calibration plane and the calibration structures reflecting the linear light section to generate a sensed frame. The calculation module calculates positions of gravity centers of a plurality of calibration points in the sensed frame corresponding to the calibration structures.

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