基于人体骨架的国标舞蹈动作相似度计算研究

针对目前传统舞蹈教学过程中基本通过专业舞蹈教师对舞蹈动作的标准与否进行主观判断,缺少客观评价指标的现状,采用人体骨架模型分别对图像中国标舞学习者的舞蹈动作和标准舞蹈动作计算人体关键点坐标,再计算学习者舞蹈动作和标准舞蹈动作之间的相对偏移角度,根据得到的相对偏移角度设计评估学习者舞蹈动作是否标准的客观评估指标,通过该客观评估指标的量化数据判断学习者舞蹈动作的标准程度,并提出最终的舞蹈动作修正建议。在实拍舞蹈动作图像上的仿真结果表明,该方法所得客观评价结果与主观评价结果相一致,对于实时判断国标舞学习者动作标准程度有着良好的效果。     

基于人工智能动态捕捉技术的笔记本改良设计评价方法建立研究

在产品开发与产品性能评价中经常会使用到观察法,随着人工智能人体姿态识别技术的发展,可以大幅度提升对肢体动作的量化效率。文章以笔记本改良为研究对象,通过使用二维姿势检测系统,采集使用者在翻动笔记本动作时肢体关键位置信息,帮助产品开发者有效地发现传统行为观察法难以发现的动作细节,探索新的客观评价方法,促进产品开发时的更迭速度。     

基于情感标注的自动编舞系统

现有的虚拟舞蹈系统多注重舞蹈动作与音乐节奏的一致性,而忽略了舞蹈与音乐在情感层面上的联系.针对该现象,文章设计实现了基于情感标注的自动编舞系统.系统以MIDI音源为驱动,结合已标注的音乐情感及舞蹈动作情感,在情感层面上进行舞蹈的自动编排,并实现了虚拟舞蹈的自动生成.系统首先采集人体运动的图片序列,通过处理该序列建立三维人体模型以及舞蹈动作库,并以OpenGL为平台,设计实现了场景和角色模型,最终将选择编排的舞蹈动作以三维动画的方式展示出来.实验证明,该系统自动编排的舞蹈动作能够很好的演绎音乐的情感内涵,同时该系统能对更加丰富多样的舞蹈动画仿真,它的实现推动了虚拟舞蹈的动画仿真研究.     

我的现代舞摄影情结 肢体艺术的灵魂演出

在现代舞艺术家的心目中，人类每一个源于内心的自发动作，都是优美的舞蹈。这正是现代舞的灵魂所在，它糅合了哑剧、话剧、演讲、街舞、鼓舞、行为艺术甚至杂技，舞台也充分利用了声、光、电等高科技手段，以肢体解放的艺术表现形式来释放现代人内心深处的欲望、绝望，甚至是梦境或潜意识一这种最为自由的舞蹈形式也将人类的肢体语言演绎得淋漓尽致，它的每一个肢体舒展的瞬间、每一次力量的爆发、每一种舞台造型的变化都是摄影师心中最完美的影像定格。[编者按]     

基于FPGA的肢体动作捕捉系统设计与实现

基于DE2-115开发平台,设计了一种高效的肢体动作捕捉系统.系统对摄像头采集到的视频信号进行肤色检测、噪声消除,提取出合适合适肤色块提取,在此基础上计算跟踪肢体质心坐标,并根据人体轮廓和质心之间的位置关系建立人体肢体模型.系统实现了肢体动作实时捕捉,并完成了三维模型重建.     

中国传统舞蹈信息数字化的应用研究

文章概述了舞蹈信息数字化的研究发展情况及数字化中国传统舞蹈的研究价值,并对其可行性作了理论推断,利用动作捕捉系统采集人体运动信息并建立人体模型,在基于中国传统舞蹈测量的实验中,对人体模型的“刚性假设”进行了应用验证。同时,在三维环境下通过虚拟人体的动作绑定,有效地记录了中国传统舞蹈的信息,证明了数字化中国传统舞蹈的可行性,为建立中国舞蹈数据库提供了元素,最后对中国传统舞蹈信息数字化的应用前景进行了讨论。     

音频信息在中国舞蹈姿态分析中的应用研究

提出了数字化舞蹈技术的概念,并介绍了音频在数字舞蹈技术中的应用及前端处理,提出了基于音乐节奏的动作提取和分析方法,利用音频乐段与动作序列的对应关系,有效地将音乐信息应用在数字化中国舞蹈动作的过程中.并对音频技术在数字化中国舞蹈动作分析技术中的应用前景进行了讨论.     

基于序列多尺度特征融合表示的层级舞蹈动作姿态估计方法

人体姿态估计是计算机视觉研究领域的热点研究问题之一,但其在传统民间舞蹈动作姿态估计方面的应用研究尚处于起步阶段.由于舞蹈图像中人体动作复杂多变、舞蹈动作连贯性强、舞蹈者存在严重遮挡不易检测等特点,传统人体姿态估计方法难以准确估计舞蹈者的动作变化,导致舞蹈动作姿态估计准确率较低.针对此问题,本文提出一种基于序列多尺度特征融合表示的层级舞蹈动作姿态估计方法,该方法针对舞蹈动作骨骼关节点尺度变化剧烈的问题,构建基于序列多尺度特征融合表示的关节点估计模型.并且,针对舞蹈姿态形变较大,遮挡严重的问题,设计基于关节点几何关系的层级姿态估计模型,提高舞蹈动作姿态估计的效果.实验结果表明,本文方法在标准人体姿态估计数据集及自建舞蹈数据集上取得较好的姿态估计结果.     

舞蹈视频图像中动作识别方法研究

运用计算机及"看"视频是当前人机交互领域的一个热门话题.以计算机视觉对舞蹈视频图像中舞者的动作进行识别意义重大.以舞蹈视频图像动作识别为切入点,提出对舞蹈视频图像动作进行灰度转换、阈值化处理、背景减除、降噪等预处理,对舞蹈视频图像特征提取及关节点建模进行分析,形成了舞蹈视频图像动作识别的系统思路.     

运动视觉跟踪中动作捕获器的嵌入式设计

为了提高运动视觉跟踪的准确度,设计了运动中的动作捕获器,包括12个传感器节点和1个传感器数据汇聚节点。传感器节点由ADXL345加速度传感器、L3G4200D陀螺仪以及LSM303DLH地磁传感器构成,12个传感器节点部署到行人肢体各部位,获取行人不同肢体部位的九轴传感器数据,对获取的数据实施预操作。数据汇聚节点采集不同传感器节点中的数据,将全部数据传递到计算机中进行分析。计算机依据获取的数据,驱动三维人物模型呈现行人的动作捕获结果。实验结果表明,所设计的动作捕获器具有较高的精度和稳定性。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks