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A Novel Video Reversible Data Hiding Algorithm Using Motion Vector for H.264/AVC

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Tsinghua Science and Technology 2017年第5期22卷 489-498页

作者： Ke niu Xiaoyuan Yang yingnan Zhang Key Laboratory of Network & Information Security of PAP Engineering College of PAP

A novel reversible data hiding algorithm for H.264/AVC videos is proposed. Histogram Shifting （HS） of motion vector values is used efficiently in reversible data hiding to embed data. By designating a specific decoded reference frame, the distortion accumulation effects due to modification of the motion vectors is overcome. All the extracted information can be recovered without loss of the original compressed video carrier. The experimental results show that the proposed algorithm is simple, has higher capacity and invisibility than other existing schemes, and can adjust the relationship between capacity and invisibility according to embedded load.

关键词： reversible video data hiding H.264/AVC motion vector histogram modification modified referenceframe

A HEVC Video Steganalysis Method Using the Optimality of Motion Vector Prediction

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Computers, Materials & Continua 2024年第5期79卷 2085-2103页

作者： Jun Li Minqing Zhang Ke niu yingnan Zhang Xiaoyuan Yang College of Cryptography Engineering Engineering University of the Chinese People’s Armed Police ForceXi’an710086China Key Laboratory of Network and Information Security of the Chinese People’s Armed Police Force Xi’an710086China

Among steganalysis techniques,detection against MV(motion vector)domain-based video steganography in the HEVC(High Efficiency Video Coding)standard remains a challenging *** the purpose of improving the detection performance,this paper proposes a steganalysis method that can perfectly detectMV-based steganography in ***,we define the local optimality of MVP(Motion Vector Prediction)based on the technology of AMVP(Advanced Motion Vector Prediction).Secondly,we analyze that in HEVC video,message embedding either usingMVP index orMVD(Motion Vector Difference)may destroy the above optimality of *** then,we define the optimal rate of MVP as a steganalysis ***,we conduct steganalysis detection experiments on two general datasets for three popular steganographymethods and compare the performance with four state-ofthe-art steganalysis *** experimental results demonstrate the effectiveness of the proposed feature ***,our method stands out for its practical applicability,requiring no model training and exhibiting low computational complexity,making it a viable solution for real-world scenarios.

关键词： Video steganography video steganalysis motion vector prediction motion vector difference advanced motion vector prediction local optimality

A Dual Domain Robust Reversible Watermarking Algorithm for Frame Grouping Videos Using Scene Smoothness

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Computers, Materials & Continua 2024年第6期79卷 5143-5174页

作者： Yucheng Liang Ke niu yingnan Zhang Yifei Meng College of Cryptographic Engineering Engineering University of the Chinese People’s Armed Police ForceXi’an710086China Key Laboratory of Information Security of the Chinese People’s Armed Police Force Engineering University of the Chinese People’s Armed Police ForceXi’an710086China

The proposed robust reversible watermarking algorithm addresses the compatibility challenges between robustness and reversibility in existing video watermarking techniques by leveraging scene smoothness for frame grouping *** in the H.264 video coding standard,the algorithm first employs traditional robust watermark stitching technology to embed watermark information in the low-frequency coefficient domain of the U ***,it utilizes histogram migration techniques in the high-frequency coefficient domain of the U channel to embed auxiliary information,enabling successful watermark extraction and lossless recovery of the original video *** results demonstrate the algorithm’s strong imperceptibility,with each embedded frame in the experimental videos achieving a mean peak signal-to-noise ratio of 49.3830 dB and a mean structural similarity of *** with the three comparison algorithms,the performance of the two experimental indexes is improved by 7.59%and 0.4%on *** the same time,the proposed algorithm has strong robustness to both offline and online attacks:In the face of offline attacks,the average normalized correlation coefficient between the extracted watermark and the original watermark is 0.9989,and the average bit error rate is *** the face of online attacks,the normalized correlation coefficient between the extracted watermark and the original watermark is 0.8840,and the mean bit error rate is *** with the three comparison algorithms,the performance of the two experimental indexes is improved by 1.27%and 18.16%on average,highlighting the algorithm’s ***,the algorithm exhibits low computational complexity,with the mean encoding and the mean decoding time differentials during experimental video processing being 3.934 and 2.273 s,respectively,underscoring its practical utility.

关键词： Robust reversible watermarking scene smoothness dual-domain U channel H.264 encoding standard

Evaluation of Inner Mongolia Wind Erosion Prevention Service based on Land Use and the RWEQ Model

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Journal of Resources and Ecology 2022年第5期13卷 763-774页

作者： WANG Yangyang XIAO Yu XU Jie XIE Gaodi QIN Keyu LIU Jingya niu yingnan GAN Shuang HUANG Mengdong Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Beijing Forestry University Beijing 100083China

Inner Mongolia is the important ecological barrier zone in northern China,which plays an important role in the prevention and control of wind in the regional *** on the Revised Wind Erosion Equation(RWEQ)model and the cost-recovery method,this study simulated the wind erosion prevention service(WEPS)in Inner Mongolia in 2010 and 2015,investigated the spatial pattern of material and monetary value of WEPS,and analyzed the differences among various cities and various *** results indicated that the total WEPS of Inner Mongolia was estimated to be 73.87×10^(8) t in 2015,which was 4.61×10^(8) t less than in 2010,while the monetary value of WEPS was calculated to be 738.66×10^(8) yuan in 2015,which was 46.16×10^(8) yuan less than in *** all the leagues and cities,Xilin Gol League supported the highest WEPS,reaching 18.65×10^(8) t in 2015,while Wuhai provided the *** WEPS of Hulunbeier increased the most,by 4.37×10^(8) t from 2010 to *** WEPS in the grassland ecosystem was the highest among the different ecosystems,accounting for more than55%of the total WEPS in Inner Mongolia,but it was reduced by 1.05×10^(8) t during the same *** WEPS in the forest ecosystem increased the most,reaching 0.19×10^(8) *** study found that the implementation of projects such as returning farmland to forests and grasses and sand control effectively increased the WEPS by increasing the forest ***,unsuitable land use increased the desertification of ecosystems which resulted in a reduction of WEPS in Inner Mongolia.

关键词： wind erosion prevention service revised wind erosion equation ecological technology

经济欠发达地区撂荒耕地空间格局与驱动因素分析

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农业机械学报 2017年第2期48卷 141-149页

作者：牛继强林昊牛樱楠樊勇唐文武信阳师范学院地理科学学院信阳464000 北卡罗来纳大学夏洛特分校地理与地球科学系夏洛特28223

基于遥感(RS)、地理信息系统(GIS)技术、支持向量机(SVM)和景观指数等方法,提出了撂荒耕地信息提取的技术路线和研究思路。以河南省罗山县子路镇为研究区,采用2013、2015年春秋两季的4景Landsat-8 OLI遥感影像,提取该镇撂荒耕地及其时... 详细信息

基于遥感(RS)、地理信息系统(GIS)技术、支持向量机(SVM)和景观指数等方法,提出了撂荒耕地信息提取的技术路线和研究思路。以河南省罗山县子路镇为研究区,采用2013、2015年春秋两季的4景Landsat-8 OLI遥感影像,提取该镇撂荒耕地及其时空分布信息,进而分析地形、交通、灌溉条件和耕作半径等几个农业生产条件对子路镇耕地撂荒的影响,得出利用遥感影像提取撂荒耕地的正确率达到90%以上;该区域撂荒耕地主要分为季节性撂荒和常年性撂荒,且季节性撂荒较为严重;地形、交通、灌溉和耕作半径均影响耕地撂荒的时空分布,且地形因素中的坡度影响最大。研究结果不仅能够对经济欠发达地区撂荒耕地空间信息提取、驱动因素分析提供技术支撑,而且也可为国家粮食安全以及区域可持续发展政策的制定提供依据。

关键词：撂荒耕地遥感地理信息系统空间格局驱动因素

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多通道运动矢量排序的可逆视频信息隐藏

信息安全研究 2024年第8期10卷 698-705页

作者：孟逸飞钮可梁钰承石林张英男中国人民武装警察部队工程大学密码工程学院西安710016 武警部队信息安全重点实验室(中国人民武装警察部队工程大学) 西安710016

针对现有基于运动矢量排序的视频可逆信息隐藏算法无法根据视频帧视觉特性自适应调节嵌入容量且容量有限的问题,提出一种多通道矢量排序的可逆视频信息隐藏算法.该算法通过计算参考帧的纹理复杂度和运动复杂度情况决定后续帧是否嵌入信... 详细信息

针对现有基于运动矢量排序的视频可逆信息隐藏算法无法根据视频帧视觉特性自适应调节嵌入容量且容量有限的问题,提出一种多通道矢量排序的可逆视频信息隐藏算法.该算法通过计算参考帧的纹理复杂度和运动复杂度情况决定后续帧是否嵌入信息,从而实现后续帧的自适应信息嵌入,算法同时对多通道像素值排序(multi-pass pixel value ordering, multi-pass PVO)技术进行改进,将其应用于视频信息隐藏,有效提升可逆隐藏算法嵌入容量.实验结果表明,相较于同类算法,PSNR和SSIM的变化值分别降低14.5%和8.5%,嵌入容量提升7.4%,在视觉质量和嵌入容量方面有显著提高.

关键词：视频信息隐藏可逆信息隐藏运动矢量 H.264编码标准像素值排序

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A MV-Based Steganographic Algorithm for H.264/AVC without Distortion

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Computers, Materials & Continua 2020年第6期63卷 1205-1219页

作者： Hongqiong Tang Xiaoyuan Yang yingnan Zhang Ke niu Engineering University of PAP Xi’an710086China Key Laboratory of Network and Information Security under the PAP Xi’an710086China

H.264/AVC video is one of the most popular multimedia and has been widely used as the carriers of video *** this paper,a novel motion vector(MV)based steganographic algorithm is proposed for the H.264/AVC compressed video without *** modules are introduced to eliminate the distortion caused by the modifications of motion vectors and guarantee the security of the *** the embedding block,the motion vector space encoding is used to embed a(2n+1)-ary notational number into an n-dimension vector composed of motion vectors generated from the selection *** is adopted to disturb the order of steganographic carriers to improve the randomness of the carrier before the operation of *** re-motion compensation(re-MC)block will re-construct the macroblock(MB)whose motion vectors have been modified by embedding *** block plays the role of the generator for chaotic sequences and encryptor for secret *** results demonstrate that our proposed algorithm can achieve high embedding capacity without stego video visual quality distortion,it also presents good undetectability for existing MV-based steganalysis *** comparisons with other existing algorithms are provided to demonstrate the superiority of the proposed algorithm.

关键词： Video steganography motion vector without distortion H.264/AVC

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钨靶在散裂中子源中的应用

金属世界 2024年第2期 28-32页

作者：牛曼王广达史英丽史瑛楠安泰科技股份有限公司北京100081 安泰天龙钨钼科技有限公司北京100081 北京安泰中科金属材料有限公司北京100094

近年来,随着核聚变、散裂中子源等大科学装置的建设和运行,钨作为一种具有优异性能的难熔金属材料,其重要性更加显著。本文介绍了世界散裂中子源的发展情况,重点阐述了散裂中子源对于钨靶材的要求及其研发技术。中国散裂中子源用钨靶组... 详细信息

近年来,随着核聚变、散裂中子源等大科学装置的建设和运行,钨作为一种具有优异性能的难熔金属材料,其重要性更加显著。本文介绍了世界散裂中子源的发展情况,重点阐述了散裂中子源对于钨靶材的要求及其研发技术。中国散裂中子源用钨靶组件,创新性地通过钽包覆钨和高效散热结构的开发,成功解决了钨靶在高能量粒子辐照产热和冷却水腐蚀的技术难题,保证了散裂中子源设备的正常运行。

关键词：散裂中子源大科学装置难熔金属材料钨靶高能量粒子核聚变高效散热冷却水

Abnormal Prefrontal Neural Oscillations are Associated with Social Deficits in MECP2 Duplication Syndrome

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Neuroscience Bulletin 2022年第12期38卷 1598-1602页

作者： Xiao Li yingnan Nie Qiyu niu Xuanjun Guo Zilong Qiu Shouyan Wang Institute of Intelligent Robotics Academy for Engineering and TechnologyFudan UniversityShanghai 200433China Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghai 200433China Center for Excellence in Brain Science and Intelligence Technology Institute of NeuroscienceState Key Laboratory of NeuroscienceCAS Key Laboratory of Primate NeurobiologyChinese Academy of SciencesShanghai 200031China National Clinical Research Center for Aging and Medicine Huashan HospitalFudan UniversityShanghai 200040China

DearEditor,Methyl-CpG-binding protein 2(MeCP2)participates in regulating the expression of the CREB,TDP-43 and Dnmtl genes[1,2].Recent studies have shown that MeCP2 is essential for maintaining normal neural functions in the mammalian *** of MeCP2causes MECP2 duplication syndrome[3],a type of autism spectrum disorder that results in a core phenotype of social deficits in human patients[4],nonhuman primates[5],and rodents[6].

关键词： MeCP2 MECP2 patients