查询词典 symmetry

Keywords: image feature detection, phase information, image processing, phase congruency, symmetry phase congruency

从利用图像信息的角度，系统分析了图像特征检测问题的研究文献，将图像特征检测方法分为两大类，即基于梯度信息的方法和基于相位信息的方法。

In allusion to the conflict in solving the precision and constringency speed in genetic algorithm, this paper advances a kind of a new genetic algorithm for self adaptation, symmetry and congruity.

针对遗传算法存在求解精度与收敛速度间的矛盾，提出一种自适应对称调和遗传新算法。

Chapter Five shows the case study of the beauty of math in high school teaching. Conic section is taken as an example to unearth the beauty of mathematics in from the following three aspects: 1. the language beauty of conic section reveals the external formal beauty; 2. the methodological beauty and the logical beauty of conic section reflect the internal rational beauty; 3. the beauty of mathematics in conic section reveals the new value in internal knowledge structure of textbooks. Moreover, the application of the beauty of mathematics in high school math teaching is also discussed from the following four points of view: the pursuit of conciseness, the construction of symmetry, the utilization of unity and the discovery of uniqueness.

首先，以圆锥曲线教学为案例来挖掘中学数学教学中的数学美，具体从三个层次探讨①圆锥曲线语言之美，是数学美的外在形式美具体展现；②圆锥曲线方法美、逻辑美，是深层次数学美的内在理性美的反映；③在圆锥曲线的教学过程中，利用其数学美处理教材，揭示内在知识结构的新价值；其次，提出数学美在中学数学学习中的具体案例运用，并具体从追求简洁性、构造对称性、利用统一性和发现奇异性四个方面来举例探讨。

In order to keep the symmetry of C.A.S'figure, the conjunctional marks can be omitted from some sentences while can't be omitted from others.

从形式上来看，为了保持紧缩句句形的对称，有的句子可以省略关联标记，有的句子则不可以。

For the bottom-up attention process, areas of interest that deserve visual attention are formed by a sequentially extracting of feature map, conspicuity map, and interesting map. Firstly, based on Treisman's feature integration theory and the characteristics of orientation and frequency selective nerve cells in biological cortex, we propose a new 2D optimal quadrature filter in the meaning of minimum energy loss to extract intensity, edge, orientation, symmetry, curvature and comer features to form the feature maps. Then based on the local competent and global cooperative perception character of biological vision, we design a kind of competent/cooperative filter and use a set of such filters to extract conspicuous locations that will most likely to cause visual attention from feature maps to form conspicuity maps.

我们根据Treisman〓的特征整合理论，结合生物视觉皮层的方向、频率敏感性神经元，提出采用一组调制在不同尺度和方向上的新的最佳正交特征滤波器并行地提取图象的亮度、边缘、方向、对称性、曲率和角度等特征作为注意线索，构成特征图；在此基础上，基于生物视觉的局部竞争和全局协作特性，本文设计了一种竞争协作滤波器用于从特征图中提取可能引起视觉注意的显著位置构成显著图，各显著图进一步通过本文提出的融合算法和非线性松弛迭代算法生成自底向上兴趣图。

Furthermore, we define a convolution multiplication between characteristic functions of constructible subsets by using push-forward functor from the category of algebraic varieties over C to the category of spaces of constructible functions. We construct geometric model for "intrinsic symmetry" of the octahedral axiom in a triangulated category. Using it, we deduce the multiplication satisfies the Jacobi identity of Lie algebra and then realize infinite dimensional Lie algebras.

进一步，我们使用复代数簇范畴到可构函数空间范畴的pushforward函子，给出了可构集上特征函数的卷积乘法，并构造了三角范畴八面体公理的内蕴对称性的几何模型，最终证明了对于不可分解支撑有界可构集的特征函数，乘法满足李代数定义的Jacobi恒等式，从而给出了无限维李代数的实现。

These challenges are mainly reflected in three aspects:to replace reasonableness with symmetry,logic with context,and realism with constructionism.

这种挑战主要体现在三个方面：以对称性取代合理性、以发现的语境取代辩护的逻辑、以建构论取代实在论。

Nonoption contingent claims may also involve fees for the bank, but they do not necessarily impose a contingent liability on the bank because there is a symmetry in the obligations of the bank and the customer.

非选择权或有债权也可能涉及付给银行的费用，但这种债权不一定构成银行的或有负债，因为这种情况下银行与其客户的义务是平衡的。

Unlike KL divergence, the new measure is symmetry and do not require the condition of absolute continuity to be satisfied by the probability distribution involved.

与Kullback-Leibler距离不同，新的距离测度具有对称性，并且对概率值为0的情况不需要特殊处理。

The third chapter is to look upon the East-West philosophical relation from theproperties theory making inquiry into the law of thinking and the aspect of the functionof thought in the East-West philosophical relation in terms of three kinds of properties,i.e.continuity,contrariety,symmetry.

探讨思维的规律以及中西哲学关系在思维函数方面的三种性质（连续性、对立性和对称性），并通过完形心理学的方法完形了对另外两个性质的讨论。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。