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PAPS: Progressive Attention-Based Pan-sharpening

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IEEE/CAA Journal of Automatica Sinica 2024年第2期11卷 391-404页

作者： Yanan Jia Qiming Hu Renwei Dian Jiayi Ma xiaojie guo College of Intelligence and Computing Tianjin UniversityTianjin 300350 China IEEE School of Robotics Hunan UniversityChangsha 410082China Electronic Information School Wuhan UniversityWuhan 430072China

Pan-sharpening aims to seek high-resolution multispectral(HRMS) images from paired multispectral images of low resolution(LRMS) and panchromatic(PAN) images, the key to which is how to maximally integrate spatial and spectral information from PAN and LRMS images. Following the principle of gradual advance, this paper designs a novel network that contains two main logical functions, i.e., detail enhancement and progressive fusion, to solve the problem. More specifically, the detail enhancement module attempts to produce enhanced MS results with the same spatial sizes as corresponding PAN images, which are of higher quality than directly up-sampling LRMS *** a better MS base(enhanced MS) and its PAN, we progressively extract information from the PAN and enhanced MS images, expecting to capture pivotal and complementary information of the two modalities for the purpose of constructing the desired HRMS. Extensive experiments together with ablation studies on widely-used datasets are provided to verify the efficacy of our design, and demonstrate its superiority over other state-of-the-art methods both quantitatively and qualitatively. Our code has been released at https://***/JiaYN1/PAPS.

关键词： High-resolution multispectral image image fusion pan-sharpening progressive enhancement

A new encryption scheme for surveillance videos

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Frontiers of Computer Science 2015年第5期9卷 765-777页

作者： Xiaochun CAO Meili MA xiaojie guo Ling DU Dongdai LIN School of Computer Science and Technology Tianjin University Tianjin 300072 China SKL Of Information Security Institute of Information Engineering Chinese Academy of Sciences Beijing 100093 China

In this paper, we propose a novel framework to encrypt surveillance videos. Although a few encryption schemes have been proposed in the literature, they are not sufficiently efficient due to the lack of full consideration of the characteristics of surveillance videos, i.e., intensive global redundancy. By taking advantage of such redundancy, we design a novel method for encrypting such videos. We first train a background dictionary based on several frame observations. Then every single frame is parsed into the background and foreground components. Separation is the key to improve the efficiency of the proposed technique, since encryption is only carried out in the foreground, while the background is skillfully recorded by corresponding background recovery coefficients. Experimental results demonstrate that, compared to the state of the art, the proposed method is robust to known cryptanalytic attacks, and enhances the overall security due to the foreground and background separation. Additionally, our encryption method is faster than competing methods, which do not conduct foreground extraction.

关键词： surveillance videos video encryption background and foreground separation

Video color conceptualization using optimization

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Science China(Information Sciences) 2014年第7期57卷 173-183页

作者： CAO XiaoChun ZHANG YuJie guo xiaojie CHEUNG Yiu-Ming School of Computer Science and Technology Tianjin University Department of Computer Science Hong Kong Baptist UniversityHong Kong SARHong Kong 999077China

Color conceptualization aims to propagate"color concepts"from a library of natural color images to the input image by changing the main ***,the existing method may lead to spatial discontinuities in images because of the absence of a spatial consistency *** this paper,to solve this problem,we present a novel method to force neighboring pixels with similar intensities to have similar *** this constraint,the color conceptualization is formalized as an optimization problem with a quadratic cost ***,we further expand two-dimensional(still image)color conceptualization to three-dimensional(video),and use the information of neighboring pixels in both space and time to improve the consistency between neighboring *** performance of our proposed method is demonstrated for a variety of images and video sequences.

关键词： color conceptualization color discontinuity optimization color correspondence video sequence

More Than Lightening:A Self-Supervised Low-Light Image Enhancement Method Capable for Multiple Degradations

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IEEE/CAA Journal of Automatica Sinica 2024年第3期11卷 622-637页

作者： Han Xu Jiayi Ma Yixuan Yuan Hao Zhang Xin Tian xiaojie guo the Electronic Information School Wuhan UniversityWuhan 430072China IEEE the Department of Electronic Engineering Chinese University of Hong KongHong Kong 999077China the College of Intelligence and Computing Tianjin UniversityTianjin 300350China

Low-light images suffer from low quality due to poor lighting conditions,noise pollution,and improper settings of *** enhance low-light images,most existing methods rely on normal-light images for guidance but the collection of suitable normal-light images is *** contrast,a self-supervised method breaks free from the reliance on normal-light data,resulting in more convenience and better *** self-supervised methods primarily focus on illumination adjustment and design pixel-based adjustment methods,resulting in remnants of other degradations,uneven brightness and *** response,this paper proposes a self-supervised enhancement method,termed as *** can handle multiple degradations including illumination attenuation,noise pollution,and color shift,all in a self-supervised *** attenuation is estimated based on physical principles and local neighborhood *** removal and correction of noise and color shift removal are solely realized with noisy images and images with color ***,the comprehensive and fully self-supervised approach can achieve better adaptability and *** is applicable to various low light conditions,and can reproduce the original color of scenes in natural *** experiments conducted on four public datasets demonstrate the superiority of SLIE to thirteen state-of-the-art *** code is available at https://***/hanna-xu/SLIE.

关键词： Color correction low-light image enhancement self-supervised learning.

SecureWeb： Protecting Sensitive Information Through the Web Browser Extension with a Security Token

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Tsinghua Science and Technology 2018年第5期23卷 526-538页

作者： Shuang Liang Yue Zhang Bo Li xiaojie guo Chunfu Jia Zheli Liu College of Cyberspace Security Nankai University Tianjin 300350 China College of Cyberspace Security Nankai University Tianjin 300350 Information Security Evaluation Center of Civil Aviation Civil Aviation University of China Tianjin 300300 Key Lab on High Trusted Information System in Hebei Province Baoding 071002 China

The leakage of sensitive data occurs on a large scale and with increasingly serious impact. It may cause privacy disclosure or even property damage. Password leakage is one of the fundamental reasons for information leakage, and its importance is must be emphasized because users are likely to use the same passwords for different Web application accounts. Existing approaches use a password manager and encrypted Web application to protect passwords and other sensitive data; however, they may be compromised or lack accessibility. The paper presents SecureWeb, which is a secure, practical, and user-controllable framework for mitigating the leakage of sensitive data. SecureWeb protects users＇ passwords and aims to provide a unified protection solution to diverse sensitive data. The efficiency of the developed schemes is demonstrated and the results indicate that it has a low overhead and are of practical use.

关键词： password manager data privacy format-preserving encryption Shadow Document Object Model(DOM)

Adaptation and validation of the Chinese version of the Central Sensitisation Inventory in patients with chronic pain

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General Psychiatry 2022年第6期35卷 396-409页

作者： Dongfeng Liang Xiangli Yu xiaojie guo Jie Zhang Department of Rheumatology and Immunology First Medical Center of Chinese PLA General HospitalBeijingChina Outpatient Department First Medical Center of Chinese PLA General HospitalBeijingChina Department of Psychology First Medical Center of Chinese PLA General HospitalBeijingChina

Background The 25-item Central Sensitisation Inventory(CSl-25)is a patient-reported instrument used to screen patients at risk of central sensitisation,a pathophysiological mechanism implicated in many chronic pain *** To adapt and validate a Chinese version of the CSl-25 in the Chinese *** The Chinese CSl-25 was developed by the translation of the original English version,back translation,cultural adaptation and revision using the Delphi *** Chinese CSl-25 was administered to 237patients with chronic pain and 55 healthy *** validity(confirmatoryfactor analysis),construct validity(correlations with other instruments),test-retest reliability and internal *** Confirmatory factor analysis extracted four main factors('physical symptoms','emotional distress','headache/jaw symptoms'and'urological symptoms').The Chinese CSl-25 score was positively correlated with the Pain Catastrophic Scale(PCS)total score(r=0.709),PCS subscale scores(r=0.630-0.695),Brief Pain Inventory(BPI)mean item score(r=0.773),BPI total score(r=0.773)and the number of painful sites(r=0.636).The Chinese CSl-25 had excellent test-retest reliability(intragroup correlation coefficient=0.975)and good internal consistency(Cronbach's α=0.930 in the overallpopulation and 0.882 in the chronic pain population).Conclusions The Chinese CSl-25 had excellent testretest reliability and satisfactory structuralvalidity and construct *** instrument could potentially be used in China as a self-report questionnaire in bothclinical practice and research settings.

关键词： emotional validity instrument

Robust Nonlinear Control for Six-phase Permanent Magnet Synchronous Motor with Intelligent Uncertainty Observer 36

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Robust Nonlinear Control for Six-phase Permanent Magnet Sync...

Definition and expression of non-symmetric physical properties in space for uniaxial crystals

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作者： Liu Sheng guo xiaojie Wang Yuchao College of Automation Harbin Engineering University

ISBN: (纸本)9781538629185

This paper proposes a robust adaptive backstepping sliding mode control（ABSMC） algorithm for the speed regulation of a six-phase permanent magnet synchronous motor（PMSM）. In the proposed technique, ABSMC is used to guarantee the speed tracking and parameter perturbation suppression, meanwhile, nonlinear H is utilized to minimize the influence of fastvarying load disturbances on its tracking output. To increase the anti-interference robustness and parameter insensitivity of the drive system, an uncertainty observer based on the recurrent wavelet fuzzy neural network is designed and applied to the robust ABSM controller. The effectiveness of the proposed control algorithm is verified by experimental results.

关键词： Permanent magnet synchronous motor(PMSM) adaptive backstepping sliding mode(ABSM) nonlinear robust control recurrent wavelet fuzzy neural network(RWFNN) uncertainty observer

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Chinese Physics B 2022年第9期31卷 412-420页

作者： xiaojie guo Lijuan Chen Zeliang Gao Xin Yin Xutang Tao State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China School of Physics Science University of JinanJinan 250100China

The anisotropic physical property is the most noteworthy feature of *** this paper,the subscript change method is used to analyze the sign changes of different tensors describing physical properties in uniaxial *** distribution of some physical properties in special point groups exhibits non-symmetry in eight quadrants,which should attract the attention of crystal *** difference between the crystallographic and physical coordinate systems and the lack of crystal symmetry operations are considered to be the origins of the *** avoid ambiguities and difficulties in characterizing and applying crystal physical properties,eight quadrants in space should be ***,we proposed the use of piezoelectric properties to define the positive direction of the optical coordinate axis prior to the research and applications of optical properties.

关键词： uniaxial crystals effective physical constant space distributions the positive direction of optical coordinate axis

Glucocorticoid receptor–IRS-1 axis controls EMT and the metastasis of breast cancers

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Journal of Molecular Cell Biology 2019年第12期11卷 1042-1055页

作者： Weiwei Shi Dongmei Wang Xinwang Yuan Yi Liu xiaojie guo Jingsong Li Jianguo Song State Key Laboratory of Cell Biology CAS Center for Excellence in Molecular Cell ScienceShanghai Institute of Biochemistry and Cell BiologyChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai 200031China

Glucocorticoid receptor (GR) is involved in the transcriptional regulation of genes that are important for various biological functions, including tumor growth and metastatic progression. However, the cellular and biological effects of GR remain poorly understood. Here, we investigated the role of GR and its underlying mechanism in mediating breast cancer cell survival and metastasis. We observed that the GR levels were increased in drug-resistant breast cancer cells and in metastatic breast cancer samples. GR promoted tumor cell invasion and lung metastasis in vivo. The GR expression levels were negatively correlated with the survival rates of breast cancer patients. Both ectopic expression and knockdown of GR revealed that GR is a strong inducer of epithelial-to-mesenchymal transition (EMT), which is consistent with its effects on cell survival and metastasis. GR suppressed the expression of insulin receptor substrate 1 (IRS-1) by acting as an IRS-1 transcriptional repressor. In addition, GR has an opposite effect on the expression levels of IRS-2, indicating that GR is able to differentially regulate the IRS-1 and IRS-2 expression. The cellular and biological effects elicited by GR were consistent with the reduced levels of IRS-1 observed in cancer cells, and GR-mediated IRS-1 suppression activated the ERK2 MAP kinase pathway, which is required for GR-mediated EMT. Taken together, our results indicate that GR–IRS-1 signaling axis plays an essential role in regulating the survival, invasion, and metastasis of breast cancer cells.

关键词： metastasis breast invasion