公开(公告)号：US12133625B2

公开(公告)日：2024-11-05

申请号：US17979000

申请日：2022-11-02

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: A47L9/28 ,  A47L9/30

Abstract: A dirtiness level determining method, applied to a robot cleaner comprising an image sensor, comprising: capturing an image of a reference surface as a reference image: capturing a current image; calculating a fixed pattern according to a difference between the reference image and the current image; calculating a dirtiness level of the image sensor according to the fixed pattern; and generating a notifying message if the dirtiness level is higher than a dirtiness threshold. The dirtiness level of the image sensor can be automatically determined by the robot cleaner, thus the user can be notified before the auto clean machine cannot normally operate.

公开(公告)号：US11994871B2

公开(公告)日：2024-05-28

申请号：US18140630

申请日：2023-04-28

Applicant: PixArt Imaging Inc.

Inventor： Shih-Chin Lin ,  Wei-Chung Wang ,  Guo-Zhen Wang

IPC: G05D1/02 ,  A47L11/40 ,  B25J1/02 ,  B25J11/00 ,  G05D1/00 ,  G06T7/521

CPC classification number: G05D1/0248 ,  A47L11/4011 ,  B25J11/0085 ,  G05D1/0242 ,  G06T7/521 ,  A47L2201/06

Abstract: There is provided a moving robot including a first light source module and a second light source module respectively project a first light section and a second light section, which are vertical light sections, in front of a moving direction, wherein the first light section and the second light section cross with each other at a predetermined distance in front of the moving robot so as to eliminate a detection dead zone between the first light source module and the second light source module in front of the moving robot to avoid collision with an object during operation.

公开(公告)号：US11971480B2

公开(公告)日：2024-04-30

申请号：US18201731

申请日：2023-05-24

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang ,  Tse-En Peng

IPC: G01S17/04 ,  G01S7/48 ,  G01S17/08

CPC classification number: G01S17/04 ,  G01S7/4808 ,  G01S17/08

Abstract: An optical sensing system, comprising: a first light source for emitting first light to a first part of an object; a second light source for emitting second light to a second part of the object, wherein the first part is above the second part, wherein the first light is not emitted to the second part and the second light is not emitted to the first part; a uniform light source, for emitting uniform light to the object, wherein the first light source is below the uniform light source and the second light source is above the uniform light source; and an optical sensor, wherein a detecting region of the optical sensor comprises an adjustable upper half region and a lower half region. Such optical sensing system can reduce the effect that the arm causes for hand location calculating.

公开(公告)号：US11917304B2

公开(公告)日：2024-02-27

申请号：US17530938

申请日：2021-11-19

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: G01B11/14 ,  H04N23/741 ,  H04N23/71 ,  H04N23/73

CPC classification number: H04N23/741 ,  G01B11/14 ,  H04N23/71 ,  H04N23/73

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.

公开(公告)号：US20240027619A1

公开(公告)日：2024-01-25

申请号：US18376430

申请日：2023-10-03

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: G01S17/48 ,  G01S7/4912

CPC classification number: G01S17/48 ,  G01S7/4912 ,  G01S7/4913

Abstract: An image processing method includes: acquiring a plurality of sensed values based on detecting light; comparing sensed values of each row with a corresponding threshold value to select a plurality of selected sensed values from the plurality of sensed values; determining a location of a centroid according to the plurality of selected sensed values; and calculating a plurality of depth values with respect to a plurality of detecting points according to the location of the centroid and a plurality of depth information transformation functions respectively corresponding to the detecting points.

公开(公告)号：US11826917B2

公开(公告)日：2023-11-28

申请号：US18076370

申请日：2022-12-06

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: G05B19/04 ,  G05B19/18 ,  B25J9/16 ,  G05D1/02

CPC classification number: B25J9/1694 ,  G05D1/0253 ,  G05B2219/45098 ,  G05D2201/0203

Abstract: One object determining system comprising: an air ejection device, configured to eject air; a distance detecting circuit, configured to detect distances between an electronic device comprising the object determining system and at least one location of an object when the air ejection device ejects air to the object; and a determining circuit, configured to determine a type of the object according to variations of the distances.

公开(公告)号：US11821985B2

公开(公告)日：2023-11-21

申请号：US17342044

申请日：2021-06-08

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang ,  Hui-Hsuan Chen

IPC: G01S17/66 ,  G01S17/50 ,  G06T7/521 ,  G01S7/481 ,  G01S17/46 ,  G01S7/48 ,  H04N23/51 ,  H04N23/56 ,  H04N5/33 ,  G01S17/48 ,  G01S17/08

CPC classification number: G01S17/66 ,  G01S7/4808 ,  G01S7/4815 ,  G01S7/4816 ,  G01S17/46 ,  G01S17/50 ,  G06T7/521 ,  H04N23/51 ,  H04N23/56 ,  G01S17/08 ,  G01S17/48 ,  G06T2207/10004 ,  G06T2207/10152 ,  H04N5/33

Abstract: There is provided a mobile robot that performs the obstacle avoidance and visual simultaneous localization and mapping (VSLAM) according to image frames captured by the same optical sensor. The mobile robot includes a pixel array and a processor. An upper part of the pixel array is not coated with any filter and a lower part of the pixel array is coated with an IR filter. The processor performs range estimation using pixel data corresponding to the lower part of the pixel array, and perform the VSLAM using pixel data corresponding to the upper part of the pixel array.

公开(公告)号：US11809195B2

公开(公告)日：2023-11-07

申请号：US17344960

申请日：2021-06-11

Applicant: PIXART IMAGING INC.

Inventor： Guo-Zhen Wang

IPC: G05D1/02 ,  A47L9/28 ,  G06T7/62 ,  G06T7/73 ,  A47L9/00 ,  A47L9/30 ,  G06V10/141 ,  G06V20/10 ,  G06V20/58

CPC classification number: G05D1/0246 ,  A47L9/009 ,  A47L9/2826 ,  A47L9/2842 ,  A47L9/2847 ,  A47L9/2852 ,  A47L9/30 ,  G06T7/62 ,  G06T7/73 ,  G06V10/141 ,  G06V20/10 ,  G06V20/58 ,  A47L2201/04 ,  A47L2201/06 ,  G05D2201/0215 ,  G06T2207/30261

Abstract: There is provided a moving robot including a light projector, an image sensor and a processing unit. The light projector projects a vertical light segment and a horizontal light segment toward a moving direction. The image sensor captures, toward the moving direction, an image frame containing a first light segment image associated with the vertical light segment and a second light segment image associated with the horizontal light segment. The processing unit recognizes a plush carpet in the moving direction when a vibration intensity of the second light segment image is higher than a predetermined threshold, and an obstacle height calculated according to the first light segment image is larger than a height threshold.

公开(公告)号：US20230351748A1

公开(公告)日：2023-11-02

申请号：US18218045

申请日：2023-07-04

Applicant: PIXART IMAGING INC.

Inventor： Guo-Zhen Wang

IPC: G06V20/00 ,  G06N20/00 ,  G06V10/44 ,  G06F18/2413 ,  G06F18/243 ,  G06N3/045 ,  G06V10/764 ,  G06V10/82 ,  G06V20/70 ,  G06N3/08

CPC classification number: G06V20/35 ,  G06N20/00 ,  G06V10/454 ,  G06F18/24143 ,  G06F18/24317 ,  G06N3/045 ,  G06V10/764 ,  G06V10/82 ,  G06V20/70 ,  G06N3/08

Abstract: An image recognition method and system based on deep learning are provided. The image recognition system includes a first recognizing engine, at least one second recognizing engine and a processing circuit. The second recognizing engine is activated to recognize an image when the first recognizing engine is recognizing the image. The processing circuit determines whether to interrupt the first recognizing engine recognizing the image according to a result outputted by the second recognizing engine after the second recognizing engine completes recognition of the image.

公开(公告)号：US11803191B2

公开(公告)日：2023-10-31

申请号：US17679382

申请日：2022-02-24

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: G05D1/02 ,  G06T7/62 ,  G06T7/70 ,  G06T5/00 ,  G06T7/73

CPC classification number: G05D1/0246 ,  G05D1/024 ,  G06T5/00 ,  G06T7/62 ,  G06T7/70 ,  G06T7/73 ,  G05D2201/02 ,  G06T2207/10016

Abstract: There is provided a moving robot including a light projector, an image sensor and a processing unit. The light projector projects a vertical light segment toward a moving direction. The image sensor captures, toward the moving direction, an image frame containing a light segment image associated with the vertical light segment. The processing unit calculates a step distance and a segment feature according to the image frame, outputs a flag signal according to the segment feature to indicate whether the calculated step distance is confident or not, and perform a pixel interpolation in calculating the step distance to improve the identification accuracy.