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公开(公告)号：US20250142073A1
公开(公告)日：2025-05-01
申请号：US18681633
申请日：2022-08-23
Applicant: PENG CHENG LABORATORY
Inventor： Wenbo Zhao , Jing Wang , Ge Li , Wen Gao
IPC: H04N19/13 , G06T9/00 , H04N19/136 , H04N19/184
Abstract: A point cloud encoding method, decoding method, encoding device, and decoding device are disclosed. The point cloud encoding method includes calculating a distance from a first point to a parent point of the first point as a first distance; determining a point in un-encoded points closest to the first point as a second point, and calculating residual values on N coordinate components from the second point to the first point; encoding absolute values of the residual values on the N coordinate components from the second point to the first point; encoding signs of the residual values of the second point based on the residual values of the second point and the first distance. The present disclosure utilizes the geometry position relationship between points in a point cloud to encode the absolute values of residual values and the feasible signs of residual values, thereby improving the encoding efficiency of residual values. At the same time, by optimizing the encoding efficiency of residual values, the performance of point cloud prediction tree encoding is improved.
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公开(公告)号：US20230412769A1
公开(公告)日：2023-12-21
申请号：US18037408
申请日：2021-04-13
Applicant: PENG CHENG LABORATORY
Inventor： Wen Gao , Yaowei Wang , Xinbei Bai , Wen Ji , Yonghong Tian
Abstract: A visual computing system is disclosed. The visual computing system may include a front-end device, an edge service and a cloud service which are in communication connection, the front-end device is configured to output compressed video data and feature data, the edge service is configured to store the video data, and converge the feature data, transmit various types of data and control commands, and the cloud service is configured to store algorithm models used to support various applications, and return a model stream according to a model query command, realizing a data transmission architecture with multiple streams of video stream, feature stream, and model stream in parallel, and a system architecture of end, edge, and cloud collaboration.
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3.发明授权公开(公告)号：US11638934B2
公开(公告)日：2023-05-02
申请号：US17887128
申请日：2022-08-12
Applicant: PENG CHENG LABORATORY
Inventor： Caiming Sun , Aidong Zhang , Jing Lin , Xinke Tang
Abstract: Disclosed is an optical window cleaning device, including: a cleaning brush; and a wiper arm. The wiper arm includes a first link, a torsion mechanism, a second link and a wiper arm drive system. A second end of the first link is hinged to a first end of the second link. The cleaning brush is hinged to a first end of the first link, a rotation trajectory of the cleaning brush and a rotation trajectory of a hinge joint between the second end of the first link and the first end of the second link are both located in a first plane. A rotation trajectory of the second link and the rotation trajectory of the hinge joint are located in the first plane. The torsion mechanism provides the first link and the second link with a force that rotates the first link relative to the second link.
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公开(公告)号：US20220198712A1
公开(公告)日：2022-06-23
申请号：US17604185
申请日：2020-03-05
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY , PENG CHENG LABORATORY
Inventor： Wei ZHONG , Deyun LV , Weiqiang KONG , Risheng LIU , Xin FAN , Zhongxuan LUO , Shengquan LI
Abstract: The present invention discloses a method for adaptively detecting chessboard sub-pixel level corner points. Adaptive detection of chessboard sub-pixel level corner points is completed by marking position of an initial unit grid on a chessboard, using a homography matrix H calculated by pixel coordinates of four corner points of the initial unit grid in a pixel coordinate system and world coordinates in a world coordinate system to expand outwards, adaptively adjusting size of an iteration window in the process of expanding outwards, and finally spreading to the whole chessboard region.
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公开(公告)号：US11315273B2
公开(公告)日：2022-04-26
申请号：US17604239
申请日：2020-03-05
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY , PENG CHENG LABORATORY
Inventor： Wei Zhong , Hong Zhang , Haojie Li , Zhihui Wang , Risheng Liu , Xin Fan , Zhongxuan Luo , Shengquan Li
Abstract: The present invention discloses a disparity estimation method for weakly supervised trusted cost propagation, which utilizes a deep learning method to optimize the initial cost obtained by the traditional method. By combining and making full use of respective advantages, the problems of false matching and difficult matching of untextured regions in the traditional method are solved, and the method for weakly supervised trusted cost propagation avoids the problem of data label dependency of the deep learning method.
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Patent Agency Ranking
公开(公告)号：US12107634B2
公开(公告)日：2024-10-01
申请号：US18278478
申请日：2021-06-28
Applicant: PENG CHENG LABORATORY
Inventor： Caiming Sun , Shupeng Deng , Weiwei Liu , Aidong Zhang , Xiaomin Nie , Zhenmin Chen , Hongjie Wang , Xinke Tang
IPC: H04B10/61
CPC classification number: H04B10/6165 , H04B10/615
Abstract: An on-chip adaptive optical receiver system, an optical chip, and a communication device are disclosed, which are applied to optical communication. The on-chip adaptive optical receiver system includes an antenna array configured for separating received spatial light to obtain a plurality of sub-light spots; an optical phased array configured for performing phase-shifting processing and beam combining processing on the sub-light spots to obtain combined light; and an optical receiving module configured for demultiplexing the combined light to obtain beacon light. The optical receiving module is further configured for detecting intensity information of the beacon light and generating a feedback signal according to the intensity information. The optical phased array is further configured for performing compensation phase-shifting processing and intensity equalization processing on the sub-light spots according to the feedback signal to obtain compensated combined light, and outputting the compensated combined light to the optical receiving module.
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公开(公告)号：US20240233195A1
公开(公告)日：2024-07-11
申请号：US18563146
申请日：2022-06-10
Applicant: PENG CHENG LABORATORY
Inventor： Jing Wang , Qi Zhang , Yueru Chen , Ge Li , Wen Gao
IPC: G06T9/00
CPC classification number: G06T9/001
Abstract: A point cloud attribute prediction method and apparatus, a terminal and a storage medium are disclosed. The method includes obtaining target neighbor points corresponding to a target point by a first spatial distance, and determining an optimization weight corresponding to each target neighbor point respectively based on a second spatial distance, and finally determining an attribute prediction value corresponding to the target point based on each target neighbor point and optimization weight corresponding to each target neighbor point respectively. The present disclosure optimizes the weight corresponding to each target neighbor point respectively based on the spatial distance, which can improve the correlation between the geometry information and the attribute information of the point cloud, provide more accurate prediction values when performing point cloud attribute prediction, and thus improve the encoding and decoding performance of the point cloud attributes.
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8.发明公开公开(公告)号：US20240233194A1
公开(公告)日：2024-07-11
申请号：US18562799
申请日：2022-06-10
Applicant: PENG CHENG LABORATORY
Inventor： Yueru Chen , Jing Wang , Ge Li , Wen Gao
IPC: G06T9/00
CPC classification number: G06T9/001
Abstract: A point cloud attribute encoding method and apparatus, a decoding method and apparatus, and a related device are disclosed. The point cloud attribute encoding method includes: sorting all point cloud data to be encoded to acquire sorted point cloud data, the point cloud data to be encoded being point cloud data with attributes to be encoded; grouping the sorted point cloud data based on correlation between the sorted point cloud data to acquire groups to be encoded; and performing point cloud attribute encoding based on the groups to be encoded. It is beneficial for enhancing the correlation between point cloud data within the group, improving the efficiency of decorrelation during intra group transform after grouping, and improving coding efficiency.
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公开(公告)号：US11967990B2
公开(公告)日：2024-04-23
申请号：US18342115
申请日：2023-06-27
Inventor： Qinyu Zhang , Jiayin Xue , Yiqun Zhang , Linkai Wen , Zhenyang Qian
IPC: H04B10/118 , H04B10/50
CPC classification number: H04B10/118 , H04B10/503
Abstract: Disclosed are a many-to-many laser communication networking device and a method. The device includes: an optical field array control module, a transceiver lens array module, an array phase detection module, an array characteristic splitting module, a beam switching array module and a signal transmission module. The optical field array control module is configured to receive a plurality of beams of laser light with different angles, and adjust the corresponding angle of the laser. The transceiver lens array module is configured to convert the angle-adjusted laser into beams of second optical fiber light. The array characteristic splitting module is configured to analyze the second optical fiber light to obtain the second characteristic information. The beam switching array module is configured to control the second optical fiber light to be demodulated into baseband signals via a first path or to be forwarded via a second path according to the second characteristic information.
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公开(公告)号：US20240089010A1
公开(公告)日：2024-03-14
申请号：US18278478
申请日：2021-06-28
Applicant: PENG CHENG LABORATORY
Inventor： Caiming Sun , Shupeng Deng , Weiwei Liu , Aidong Zhang , Xiaomin Nie , Zhenmin Chen , Hongjie Wang , Xinke Tang
IPC: H04B10/61
CPC classification number: H04B10/6165 , H04B10/615
Abstract: An on-chip adaptive optical receiver system, an optical chip, and a communication device are disclosed, which are applied to optical communication. The on-chip adaptive optical receiver system includes an antenna array configured for separating received spatial light to obtain a plurality of sub-light spots; an optical phased array configured for performing phase-shifting processing and beam combining processing on the sub-light spots to obtain combined light; and an optical receiving module configured for demultiplexing the combined light to obtain beacon light. The optical receiving module is further configured for detecting intensity information of the beacon light and generating a feedback signal according to the intensity information. The optical phased array is further configured for performing compensation phase-shifting processing and intensity equalization processing on the sub-light spots according to the feedback signal to obtain compensated combined light, and outputting the compensated combined light to the optical receiving module.
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