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11.发明申请公开(公告)号：US20200338744A1
公开(公告)日：2020-10-29
申请号：US16929232
申请日：2020-07-15
Applicant: PixArt Imaging Inc.
Inventor： GUO-ZHEN WANG , HUI-HSUAN CHEN
Abstract: There is provided a mobile robot that performs the obstacle avoidance, positioning and object recognition according to image frames captured by the same optical sensor. The mobile robot includes an optical sensor, a light emitting diode, a laser diode and a processor. The processor identifies an obstacle and a distance thereof according to image frames captured by the optical sensor when the laser diode is emitting light. The processor further performs the positioning and object recognition according to image frames captured by the optical sensor when the light emitting diode is emitting light.
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公开(公告)号：US20250116608A1
公开(公告)日：2025-04-10
申请号：US18377843
申请日：2023-10-09
Applicant: PIXART IMAGING INC.
Inventor： GUO-ZHEN WANG
IPC: G01N21/88
Abstract: An optical sensing system and an optical sensing method are provided. The system includes a bright-field light source, a dark-field light source, an optical detecting circuit, and a processing circuit. The processing circuit performs a floor type detection process, including: controlling the dark-field light source to provide dark-field illumination; receiving, by the optical detecting circuit, scattered lights of the dark-field light source; executing a dark-field computation process to obtain a first optical characteristic, and determining whether the first optical characteristic meets a first surface condition; in the negative, determining that a floor is a first type; in the affirmative, controlling the bright-field light source to provide bright-field illumination; receiving, by the optical detecting circuit, scattered lights of the bright-field light source; executing a bright-field computation process to obtain a second optical characteristic, and determining whether the second optical characteristic meets a second surface condition.
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公开(公告)号：US20230199320A1
公开(公告)日：2023-06-22
申请号：US18109861
申请日：2023-02-15
Applicant: PIXART IMAGING INC.
Inventor： GUO-ZHEN WANG
IPC: H04N23/73 , G06T5/00 , H04N23/71 , H04N23/80 , H04N23/741 , H04N25/60 , H04N25/589
CPC classification number: H04N23/73 , G06T5/002 , H04N23/71 , H04N23/80 , H04N23/741 , H04N25/60 , H04N25/589 , G06N20/00
Abstract: There is provided an image processing device including a light sensor and a processor. The light sensor is used to detect light and output an image frame. The processor identifies intensity of ambient light according to an image parameter associated with the image frame. When the ambient light is identified to be strong enough, the processor performs an object identification directly using the image frame. When the ambient light is identified to be not enough, the processor firstly converts the image frame to a converted image using a machine learning model, and then performs the object identification using the converted image.
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公开(公告)号：US20230139484A1
公开(公告)日：2023-05-04
申请号：US18088798
申请日：2022-12-27
Applicant: PixArt Imaging Inc.
Inventor： GUO-ZHEN WANG
Abstract: There is provided an electronic device including a light source module, an image sensor and a processor. The light source module projects a first pattern and a second pattern toward a moving direction. The image sensor captures an image of the first pattern and an image of the second pattern. The processor calculates one-dimensional depth information according to the image of the first pattern and calculates two-dimensional depth information according to the image of the second pattern.
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公开(公告)号：US20220163666A1
公开(公告)日：2022-05-26
申请号：US17535108
申请日：2021-11-24
Applicant: PIXART IMAGING INC.
Inventor： GUO-ZHEN WANG
Abstract: An optical sensing system and a method for eliminating misjudgment of a reflective light are provided. The optical sensing system includes a first light source, a second light source, a light sensor, and a processor. The processor is configured to: control the first light source to scan a horizontal detection area; control the light sensor to capture a first frame by receiving first reflective lights from the horizontal detection area; obtain a first reflection pattern, and analyze the first reflection pattern to determine whether an object is within the first portion; if so, control the second light source to scan a first vertical detection area; control the light sensor to capture a second frame from the first vertical detection area; process the second frame to obtain a second reflection pattern, and analyze the second reflection pattern to determine whether the object is detected by a misjudgment.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20220091265A1
公开(公告)日：2022-03-24
申请号：US17533585
申请日：2021-11-23
Applicant: PixArt Imaging Inc.
Inventor： MIAN-JHONG CHIU , GUO-ZHEN WANG
Abstract: There is provided a mobile robot that performs the obstacle avoidance, positioning and object recognition according to image frames captured by the same optical sensor. The mobile robot includes an optical sensor, a light emitting diode, a laser diode and a processor. The processor identifies an obstacle and a distance thereof according to image frames captured by the optical sensor when the laser diode is emitting light. The processor further performs the positioning and object recognition according to image frames captured by the optical sensor when the light emitting diode is emitting light.
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公开(公告)号：US20210289136A1
公开(公告)日：2021-09-16
申请号：US17334600
申请日：2021-05-28
Applicant: PIXART IMAGING INC.
Inventor： GUO-ZHEN WANG , HAN-CHANG LIN
Abstract: A portable electronic device is provided. The portable electronic device includes a body, an image sensor and a main system. The image sensor continually captures a first image outside the body, detects at least one motion of a user according to the first image, and generates a control signal related to the motion. The main system receives the control signal from the image sensor and executes a function or a service corresponding to the motion according to the control signal.
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公开(公告)号：US20210127049A1
公开(公告)日：2021-04-29
申请号：US17141339
申请日：2021-01-05
Applicant: PixArt Imaging Inc.
Inventor： GUO-ZHEN WANG , SHIAW-YU JOU
Abstract: An imaging system includes a light source, an image sensor and a processing unit. The image sensor alternatively captures a first bright image, a first dark image, a second bright image and a second dark image, wherein the first bright image is captured with a first exposure time corresponding to activation of the light source within a first time interval, the first dark image is captured with the first exposure time corresponding to deactivation of the light source within the first time interval, the second bright image is captured with a second exposure time corresponding to activation of the light source within a second time interval, and the second dark image is captured with the second exposure time corresponding to deactivation of the light source within the second time interval, wherein the second exposure time is longer than the first exposure time. The processing unit adjusts the second exposure time according to an object image size in the second dark image, and controls the image sensor to stop capturing the first bright and dark images with the first exposure time when no object image is contained in the second dark image.
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公开(公告)号：US20190297279A1
公开(公告)日：2019-09-26
申请号：US16435881
申请日：2019-06-10
Applicant: PixArt Imaging Inc.
Inventor： GUO-ZHEN WANG , YI-LEI CHEN
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.
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公开(公告)号：US20180302545A1
公开(公告)日：2018-10-18
申请号：US16012982
申请日：2018-06-20
Applicant: PixArt Imaging Inc.
Inventor： GUO-ZHEN WANG , SHIAW-YU JOU
Abstract: There is provided an optical distance measurement system including an image sensor and a processing unit. The processing unit is configured to generate an image to be calculated according to at least one image captured by the image sensor, wherein different image regions of the image to be calculated correspond to different exposure times thereby improving the accuracy of the distance calculation.
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