任意性
- 与 任意性 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In this paper, the theory, algorithm, and experiment of automatic object detection and tracking are studied in depth. It is firstly pointed out that the essential of Mean Shift method is a special Newton-Gaussian method. A new method named Fast Mean Shift is established to stretch the conservative step of Mean Shift method. The convergence and validity of this new method are proved in theory. And it is also proved that the convergence speed of Fast Mean Shift is faster than that of Mean Shift. The contrast experiments of searching the maximum possibility density of random of data sets in plane and 3D space are done. The results show that this new method can reduce the iterations greatly. A new object tracking method based on Fast Mean Shift is built to improve the object tracking performance, which is shown in the face tracking experiment with the tennis sequence provided by the Ohio State University, and the car tracking experiment with the car sequence provided by Kalsruhe University. The face trcking experiment with highly noised images show that the object tracking method based on Fast Mean Shift has strong anti-jamming ability. A new fast color object detection technology based on characteristic color is established, which use characteristic color distribution to compute the characteristic color vector of any area in an image quickly. With the high performance search method, the fast object detection is achieved. At last, using object tracker based on Fast Mean Shift and color object detector based on characteristic color with the Kalman filter, PID controller, searial communication and other technologies, automatic object detection and tracking system with control system is built. The availability and anti-jamming ability of this system are verified by some object detection and tracking tests in different scenes.
本文对目标自动识别与跟踪进行了理论、计算、试验三方面的深入研究,主要包括:首次指出了目标跟踪技术中常用的均值迁移方法的本质为一种特殊的高斯-牛顿方法,改进了均值迁移方法步长取值保守的弱点,建立了快速均值迁移方法,证明了该方法的收敛性、有效性以及收敛速度优于均值迁移方法;进行了平面和3维随机分布数据集的最大概率密度搜索对比试验,试验结果表明,快速均值迁移方法大大减少了迭代次数;建立了基于快速均值迁移的目标跟踪方法,利用俄亥俄州立大学提供的乒乓球序列图像和卡斯鲁厄大学的汽车序列图像,对人脸和汽车目标跟踪性能分别进行了对比试验,并进行了高噪声人脸图像目标跟踪试验,结果表明,基于快速均值迁移的目标跟踪方法有效提高了目标跟踪性能,具有很强的抗干扰能力;建立了一种新型彩色目标自动识别方法,采用特征色彩分布函数实现了对任意图像区域特征色彩矢量的快速计算,建立了高效的搜索方法,实现了彩色目标的快速识别;将基于快速均值迁移方法的目标跟踪方法、基于特征色彩的目标识别方法与卡尔曼滤波、PID控制、串行通讯等技术结合,建立了带有控制系统的快速目标自动识别与跟踪系统,并在不同场景下进行了目标自动识别与跟踪试验,验证了快速目标自动识别与跟踪系统的有效性和抗干扰能力。
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During the pre-processing of the finite element analysis, the interactive subdivision method which combines the computer's high efficiency with human's intelligence is realized. The dummy node method, which is used to solve the subdivision problem about multiply connected region and the region with isolated verge combining the optimization algorithm in topology, is brought forward for the first time in this dissertation.
在有限元分析的前处理中,本文实现了既充分利用计算机的高效性又融合了人工干预的灵活性的交互式网格生成算法,并且首次提出虚拟节点法,结合图论优化算法解决了多连通域及包含孤立边界的任意形状目标区域的网格自动生成问题。
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In chapter 4, the Newlands harmonic wavelet is improved and a new type of wavelet with better time-frequency characteristic is constructed. Frequency band of signal can be divided arbitrary with the improved harmonic wavelet so that the phenomena of aliasing are reduced. Several typical fault signals in Electromechanical System are analyzed with it. In addition to the improved harmonic wavelet in chapter 4, a new half-complex wavelet is presented to improve the complex wavelet, which is given by Chaari.O. A unilateral recursive algorithm is derived to improve the real-time characteristic. A parameter n is imported to make the time-frequency and filtering characteristics of it better and its ability of extracting fault feature is enhanced.
第四章通过对Newland谐波小波的改进构造频域紧支撑、时域性能良好的新型小波函数,可实现信号频带的任意划分,从而减少频带混叠现象,采用改进的谐波小波对多种典型的机电系统故障信号进行了分析;以Chaari.O复小波为基础构造了一个半复小波,从提高复小波算法的实时性出发,推导了半复小波单向递推算法,通过给原小波设置可调参数的方法,实现了一种能满足小波基本条件的复值小波,可以通过参数的调整调节小波滤波器在Hilbert空间的时频特性和相应的滤波性能,以加强半复小波对故障特征的提取能力。
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The sufficient conditions to guarantee robust exponential stability for the closed-loop systems are obtained based on Linear Matrix Inequality, moreover, the approach of design of robust H# output feedback controller is introduced.3 The problem of reliable H# control for a class of Lur"e systems with polytopic uncertainties is studied when all control components are operational as well as when some control components experience failures, the design approach of reliable H# controller is also obtained.4 Considering a class of uncertain Lur"e singular system with time-delays, the problem of robust stability is investigated based on Barbalats Lemma and nonsingular linear transformation of model reduction.
针对一类不确定Lur'e奇异时滞系统,基于Barbalat引理以及非奇异降阶变换,讨论了Lur'e奇异时滞系统的鲁棒稳定问题,提出了鲁棒H_∞状态浙江大学博士学位论文反馈控制器的设计方法。5、针对一类具有饱和执行器的不确定Lur'e奇异系统,提出了时滞依赖的鲁棒稳定与鲁棒二次镇定的充分条件,所的结果不需要参数的整定。6、针对任意协方差有界的有色噪声,讨论了一类不确定Lur'e奇异系统的鲁棒凡滤波问题,得出了鲁棒几滤波器设计的充分条件。7、针对一类不确定Lur'e时滞系统,通过线性变换,把它转换成奇异系统,根据奇异系统鲁棒控制理论所得出的鲁棒稳定与鲁棒镇定控制器设计的充分条件具有很小的保守性。
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In the second chapter, we obtain a sufficient condition for that there exist two elements x and y which satisfy x⊥Iyand x⊥By. As a result, it is proved that there exist elements x and y with x⊥Iyand x⊥Eyin any real two-dimensional normed linear space.
本文从点态入手,在第二章中,给出了既等腰正交又Birkhoff正交的元存在的一个充分条件,证明了在任意实二维赋范线性空间中既等腰正交又欧式正交的元的存在性。
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Slang is a casual use of language that consists of expressive but non-standard vocabulary, typically of arbitrary, flashy and often ephemeral coinages and figures of speech characterized by spontaneity and sometimes by raciness.
俚语是对语言的一种非正式的使用。它由一些表达力极强但不甚标准的词汇,任意的、出现很快但常常稍纵即逝的新词和以自发性抑或是挑逗性为特点的修辞格所组成。
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LED meshwork lamp is composed of many LED lamp-wires as definite regulars, regulars, whose shapes have square, rotundity, triangle and octagon; the colors can be make up of homochromatic or multicolor, the meshwork lamp can cover the surface of anything, whose twinkling lamps and beautiful colors can catch the views of people from the far distance, really the preferred decorative product for the hotels, drinkery and exterior decoration of big recreation places.
LED 网灯是由多组 LED 灯串按照一定规格排列起来的网状灯饰产品,其形状有方型、圆型、三角形。八角型、颜色可由单色或多种颜色排列组成,其用途独特之处在于:可以覆盖任意物体表面,其生动的闪烁效果及强烈的显色性,在很远处就可以抓住人们的视线,是宾馆、酒楼、及大型娱乐场所外景装饰的首选产品。
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In addition, a new synchronization scheme, Double-Timestamp Transaction-Level Synchronization model is put forward to solve the synchronization problem under the 3-tier replication architecture (Mobile Client - Synchronization Server - Database Server). DTSTLS utilizes a novel double-timestamp strategy to promote the efficiency of synchronization. Besides, it ensures serializability and consistency of the mobile database system through transaction-level conflict reconciliation.Mobile transaction processing is another key technology to provide efficient information service in mobile computing environment.
通过引入一种乐观并发控制方法与两段锁协议相结合的移动事务处理机制,本文重点解决了交互式长事务的问题,并提供了对移动主机任意移动性和数据库系统一致性的支持;在移动对象数据库方面,本文提出了一种新的移动对象数据库模型—离散时空轨迹移动对象数据库模型,重点阐述了DSTTMOD模型中的位置表示方法及位置更新处理策略,并分别给出了基于GRID文件和基于QUAD树的移动对象索引算法。
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It is shown that finally this problem turns to the estimation of the real joint eigenvalues of three real matrices and solve the joint eigenvalue estimation by a recently proposed simultaneous diagonalization algorithm.
通过同时对角化算法估计矩阵的联合特征值,获得了参数联合估计的强可辨识性,即允许信号参数在任何一维任意重复,并可以使估计参数实现自动配对。
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At present,this apparatus is used mainly for the examination of the perfectness of convergent spherical wave surface with aperture angle≤1:3,hence it can be used for the non-contact direct test of aluminized or unaluminized concave mirrors with any ...
因此可以用来无接触的直接检验任意口径的镀铝或未镀铝的凹球面镜;加入辅助镜后可以检验平面镜、天文望远镜用的各种非球面镜、介质的均匀性、光学系统的质量、光轴校正及安装变形情况;也可给出物镜对于现用激光波长(6328)的波面差及测出某些象差。
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。