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    Method and System for Eliminating Stripe Noise in Infrared Images
    2.
    发明申请
    Method and System for Eliminating Stripe Noise in Infrared Images 审中-公开

    公开(公告)号：US20180174274A1

    公开(公告)日：2018-06-21

    申请号：US15838404

    申请日：2017-12-12

    Applicant: SHENZHEN UNIVERSITY

    Inventor： Jihong Pei ,  Mi Zou ,  Weixin Xie ,  Xuan Yang

    IPC: G06T5/00 ,  H04N5/33 ,  H04N5/217

    CPC classification number: G06T5/002 ,  G06T2207/10048 ,  H04N5/217 ,  H04N5/33 ,  H04N5/3658

    Abstract: A method of eliminating stripe noise for infrared images including: selecting a specific row of data from an to-be-filtered image Aim, and obtaining a stripe width N1 from information of a frequency spectrum of the data; intercepting (N1+1) new sequences of different lengths from a specific row sequence of the image according to the stripe width N1, and obtaining an optimal interception length N by analyzing information of amplitude spectrum of each new sequence; splitting the to-be-filtered image Aim with a size of M×Nn into a pair of optimum to-be-filtered sub-images Bim and Cim with a size of M×N according to the length N; obtaining two sub-images Bimf and Cimf after using a notch-comb filter to filter the two optimum to-be-filtered sub-images Bim and Cim; carrying out a brightness adjustment and a combination process to the two sub-image Bimf and Cimf to obtain an image Aimf.

    Multi-target tracking method and tracking system applicable to clutter environment
    3.
    发明授权
    Multi-target tracking method and tracking system applicable to clutter environment 有权

    公开(公告)号：US10935653B2

    公开(公告)日：2021-03-02

    申请号：US16236603

    申请日：2018-12-30

    Applicant: SHENZHEN UNIVERSITY

    Inventor： Zongxiang Liu ,  Liangqun Li ,  Weixin Xie

    IPC: G01S13/72 ,  G01S13/538

    Abstract: A multi-target tracking method applicable to a cluttered environment includes a prediction step, a classification step, an updating step, a pruning and extracting step, a generation step, a supplement step and a combining step. A multi-target tracking system applicable to a cluttered environment is also provided. The present invention has the characteristic of a fast processing speed, and at the same time, effectively solves the problem that the existing method fails to provide state estimation for a new target in the initial few moments after the new target appears.

    DATA HIDING METHOD AND DATA HIDING SYSTEM
    4.
    发明申请
    DATA HIDING METHOD AND DATA HIDING SYSTEM 审中-公开

    公开(公告)号：US20170169736A1

    公开(公告)日：2017-06-15

    申请号：US15444308

    申请日：2017-02-27

    Applicant: SHENZHEN UNIVERSITY

    Inventor： Dongning Zhao ,  Yong Zhang ,  Weixin Xie ,  Yanshan Li ,  Jianping Yu ,  Jianyong Chen

    IPC: G09C1/00

    CPC classification number: G09C1/00 ,  G09C5/00 ,  H04L2209/16

    Abstract: The invention relates to the technical field of data hiding, in particular to a data hiding method and a data hiding system. An image is used as a data carrier; after secret data is converted into a bit sequence by a sending end, the values of each bit in the bit sequence are hidden in the image; the image hidden with the secret data is obtained and is sent to a receiving end; and the receiving end can extract the hidden secret data from the image according to a corresponding secret key. During data hiding, each square image block can hide two-bit data through inverse number odd-even properties of a pixel gray value sequence of two diagonal lines of each square image block, so that the volume of data hidden in the image is twice of the number of the image blocks split by the image.

    METHOD AND DEVICE FOR ESTIMATING BACKGROUND MOTION OF INFRARED IMAGE SEQUENCES AND STORAGE MEDIUM
    5.
    发明申请
    METHOD AND DEVICE FOR ESTIMATING BACKGROUND MOTION OF INFRARED IMAGE SEQUENCES AND STORAGE MEDIUM 有权

    公开(公告)号：US20210358133A1

    公开(公告)日：2021-11-18

    申请号：US17278972

    申请日：2020-09-07

    Applicant: Shenzhen University

    Inventor： Jihong Pei ,  Kaiwen Liao ,  Weixin Xie ,  Xuan Yang

    IPC: G06T7/223 ,  G06T7/246

    Abstract: The present application provides a method and a device for estimating background motion of infrared image sequences and a storage medium. The method comprises: determining regions to be matched according to the maximum displacement of two adjacent frames of images in background motion, dividing the region to be matched into T sub-regions, and generating M groups of sub-window sets in the sub-regions randomly, and computing the background motion displacement corresponding to these sub-window sets by synchronous mutual information matching, then calculating the background motion displacement between two adjacent frames of images by a potential function voting method according to the background motion displacement corresponding to these sub-window sets. The method in the present application is based on image block matching, and does not depend on feature point extraction, so it has high robustness for background motion estimation of infrared image sequences with few feature points and noise interference.

    Distributed video panoramic display system
    6.
    发明授权
    Distributed video panoramic display system 有权

    公开(公告)号：US10334166B2

    公开(公告)日：2019-06-25

    申请号：US15828403

    申请日：2017-11-30

    Applicant: SHENZHEN UNIVERSITY

    Inventor： Jihong Pei ,  Kai Sun ,  Xuan Yang ,  Weixin Xie

    IPC: H04N5/228 ,  H04N5/232 ,  H04N7/18 ,  G06T7/80 ,  G06T7/30 ,  G03B37/04 ,  H04N5/247 ,  H04N21/218 ,  H04N21/2365 ,  G08B13/196

    Abstract: The present disclosure relates to a distributed video panoramic display system. The present disclosure collects video images of different areas through an existing camera network; the video images collected by each camera are converted into the same coordinate system by each video splitting node in a video splitting module; a plurality of paths of video image data are subjected to parallel splitting processing, so that a display area of each split video image block in a panoramic display unit respectively corresponds to a separate display screen; and each video reorganization node in a video reorganization module is used to perform reorganization processing on each received video image block, then each path of video image formed after the processing is output to the corresponding display screen of the panoramic display unit, and a panoramic video image is formed.

    Data hiding method and data hiding system
    7.
    发明授权
    Data hiding method and data hiding system 有权

    公开(公告)号：US10311757B2

    公开(公告)日：2019-06-04

    申请号：US15444308

    申请日：2017-02-27

    Applicant: SHENZHEN UNIVERSITY

    Inventor： Dongning Zhao ,  Yong Zhang ,  Weixin Xie ,  Yanshan Li ,  Jianping Yu ,  Jianyong Chen

    IPC: H04L29/06 ,  G09C1/00 ,  G09C5/00

    Abstract: The invention relates to the technical field of data hiding, in particular to a data hiding method and a data hiding system. An image is used as a data carrier; after secret data is converted into a bit sequence by a sending end, the values of each bit in the bit sequence are hidden in the image; the image hidden with the secret data is obtained and is sent to a receiving end; and the receiving end can extract the hidden secret data from the image according to a corresponding secret key. During data hiding, each square image block can hide two-bit data through inverse number odd-even properties of a pixel gray value sequence of two diagonal lines of each square image block, so that the volume of data hidden in the image is twice of the number of the image blocks split by the image.

    Method and device for estimating background motion of infrared image sequences and storage medium
    8.
    发明授权
    Method and device for estimating background motion of infrared image sequences and storage medium 有权

    公开(公告)号：US11669978B2

    公开(公告)日：2023-06-06

    申请号：US17278972

    申请日：2020-09-07

    Applicant: Shenzhen University

    Inventor： Jihong Pei ,  Kaiwen Liao ,  Weixin Xie ,  Xuan Yang

    IPC: G06T7/223 ,  G06T7/246

    CPC classification number: G06T7/223 ,  G06T7/248 ,  G06T2207/10016 ,  G06T2207/10048 ,  G06T2207/20021

    Abstract: The present application provides a method and a device for estimating background motion of infrared image sequences and a storage medium. The method comprises: determining regions to be matched according to the maximum displacement of two adjacent frames of images in background motion, dividing the region to be matched into T sub-regions, and generating M groups of sub-window sets in the sub-regions randomly, and computing the background motion displacement corresponding to these sub-window sets by synchronous mutual information matching, then calculating the background motion displacement between two adjacent frames of images by a potential function voting method according to the background motion displacement corresponding to these sub-window sets. The method in the present application is based on image block matching, and does not depend on feature point extraction, so it has high robustness for background motion estimation of infrared image sequences with few feature points and noise interference.

    Method and system for eliminating stripe noise in infrared images
    9.
    发明授权
    Method and system for eliminating stripe noise in infrared images 有权

    公开(公告)号：US10282824B2

    公开(公告)日：2019-05-07

    申请号：US15838404

    申请日：2017-12-12

    Applicant: SHENZHEN UNIVERSITY

    Inventor： Jihong Pei ,  Mi Zou ,  Weixin Xie ,  Xuan Yang

    IPC: G06T5/00 ,  H04N5/33 ,  H04N5/217 ,  H04N5/365

    Abstract: A method of eliminating stripe noise for infrared images including: selecting a specific row of data from an to-be-filtered image Aim, and obtaining a stripe width N1 from information of a frequency spectrum of the data; intercepting (N1+1) new sequences of different lengths from a specific row sequence of the image according to the stripe width N1, and obtaining an optimal interception length N by analyzing information of amplitude spectrum of each new sequence; splitting the to-be-filtered image Aim with a size of M×Nn into a pair of optimum to-be-filtered sub-images Bim and Cim with a size of M×N according to the length N; obtaining two sub-images Bimf and Cimf after using a notch-comb filter to filter the two optimum to-be-filtered sub-images Bim and Cim; carrying out a brightness adjustment and a combination process to the two sub-image Bimf and Cimf to obtain an image Aimf.

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