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为消除基本宽线检测算子中的冗余计算量，提高算法的运算速度，该文提出一种宽线算子的快速实现方法随机移动宽线算子。基本宽线算子采取逐像素移动模板的方式检测图像中的宽线特征，与之不同，随机移动宽线算子在检测时，随机地在图像中放置检测模板，并根据当前像素类型采用启发式的准则确定模板移动的策略，从而加快了模板移动速度，较好地消除了基本宽线检测算法中的冗余运算；在此基础上，提出了两种提前结束条件，可根据检测情...
Metric selection in Douglas-Rachford splitting and ADMM
Divided multiplier literature linear convergence and linear convergence parameter optimization algorithm
2015/8/7
Recently, several convergence rate results for Douglas-Rachford splitting and the alternating direction method of multipliers (ADMM) have been presented in the literature. In this paper, we show linea...
An Exact Test for Multiple Inequality and Equality Constraints in the Linear Regression Model
Multiple Inequality Equality Constraints
2015/7/31
In this article we consider the linear regression model y = X,B + a,
where e is N(O, a21). In this context we derive exact tests of the form
H: Rft ? r versus K: f E R K for the case in which a2 i...
一类调节强度可变的弱化缓冲算子及其应用研究
缓冲算子 缓冲强度 弱化算子 预测精度
2016/11/11
在灰色系统缓冲算子公理体系下，根据灰色系统的“新信息优先原理”，构造了一类调节强度可变的弱化缓冲算子，并对其特性进行了研究。针对不同的建模背景，通过调整缓冲算子的参数，可以生成具有不同弱化效果的序列。最后，利用本文提出的缓冲算子，对两个实际案例进行了建模计算，计算结果表明，这类新的弱化缓冲算子能够有效提高GM（1，1）模型的预测精度，解决定量预测结果与定性分析结论不符的问题。
一类p元最优线性码和低相关性线性序列的构造
迹映射 最优线性码 低相关性 线性序列
2017/1/14
在信息理论中，最优线性码具有很强的纠错能力、低相关性线性序列在密码系统和CDMA通信系统中得到了广泛应用. 因此构造最优线性码和构造低相关性线性序列具有重要的研究价值.记R=Fp+uFp，这里的p为奇素数.本文首先通过迹映射构造出环R上的一类新的线性码，然后将这类新的线性码的删余码通过Gray映射得到了域Fp上一类最优码.同时，通过迹映射构造出环R上的一类线性循环码，将这类线性循环码视为线性周期序...
双目立体视觉匹配的预处理技术
双目立体视觉 小波阈值去噪 直方图均衡化 拉普拉斯算子
2012/11/12
针对双目立体视觉图对区域匹配应用中存在的问题, 提出一种三阶段的匹配预处理方法. 该方法将小波阈值去噪算法和直方图均衡化技术相结合, 有效地去除了图像随机噪声和高斯噪声, 实现了立体图对间亮度差异的平衡, 并经过拉普拉斯锐化处理提高了图像对的对比度. 实验结果表明, 三阶段匹配预处理算法可有效提高立体图对间的匹配准确率。
基于依赖关系图模型的本体演化影响分析
本体演化 本体变化 描述逻辑 影响频度
2012/11/12
基于描述逻辑子语言SHOIN(D)定义本体中各元素间的依赖关系, 再通过依赖关系建立本体依赖关系图模型, 并给出了变化影响频度的概念及相应的
计算方法。
线性系统单输入的2种简单的极点配置算法
单输入线性系统 极点配置 反馈增益矩阵 矩阵特征值 Hessenberg矩阵
2013/12/5
对线性系统的单输入情况,提出2种简单的极点配置算法.2种方法都将未知量归结为一个线性代数方程组的解,而这个线性代数方程组系数矩阵的每一行均为系数矩阵是三角形的线性代数方程组的解.该算法计算简单,计算量少.第一种方法还同时求出配置后矩阵的特征向量,为系统设计提供参考;第二种方法的计算量更少.对第一种方法进行误差分析,证明只要计算精度充分高,都能达到对任意给定的大于0的极点配置误差要求.
Inversion Formulas for the Spherical Means in Constant Curvature Spaces
The spherical mean Radon transform thermoacoustic tomography the method of analytic continuation
2011/9/23
Abstract: The work develops further the theory of the following inversion problem, which plays the central role in the rapidly developing area of thermoacoustic tomography and has intimate connections...
On the Properties of Special Functions on the linear-type lattices
q-hypergeometric functions difference equations recurrence relations q-polynomials
2011/9/23
Abstract: We present a general theory for studying the difference analogues of special functions of hypergeometric type on the linear-type lattices, i.e., the solutions of the second order linear diff...
New inequalities of Ostrowski type for mappings whose derivatives are s-convex in the second sense via fractional integrals
Ostrowski type inequality convex function Riemann-Liouville fractional integral
2011/9/22
Abstract: New identity similar to an identity of [13] for fractional integrals have been defined. Then making use of this identity, some new Ostrowski type inequalities for Riemann-Liouville fractiona...
Characterization of uniformly convex and smooth Banach spaces by using Carleson measures in Bessel settings
BMO Bessel operators Carleson measures uniformly convex uniformly smooth Banach spaces
2011/9/22
Abstract: In this paper we obtain new characterizations of the q-uniformly convex and smooth Banach spaces by using Carleson measures. These measures are defined by Poisson integral associated with Be...
Generalized convexity and the existence of finite time blow-up solutions for an evolutionary problem
Finite time blow-up solutions p-Laplacian generalized convexity regularly varying functions
2011/9/22
Abstract: In this paper we study a class of nonlinearities for which a nonlocal parabolic equation with Neumann-Robin boundary conditions, for $p$-Laplacian, has finite time blow-up solutions.
Abstract: Let f be a differentiable function on the real line, and let P\inG_{f}^{C}= all points not on the graph of f. We say that the illumination index of P, denoted by I_{f}(P), is k if there are ...
Hardy Spaces $H_L^p({\mathbb R}^n)$ Associated to Operators Satisfying $k$-Davies-Gaffney Estimates
Hardy space Hardy-Sobolev space k-Davies-Gaffney estimate Schrodinger type operator
2011/9/21
Abstract: Let $L$ be a one to one operator of type $\omega$ having a bounded $H_\infty$ functional calculus and satisfying the $k$-Davies-Gaffney estimates with $k\in{\mathbb N}$. In this paper, the a...