不变性

It is succeeded in making Iris image have invariance in translation, size and rotation.

成功地实现了具有旋转、平移和尺度缩放的不变性的虹膜识别。

ABSTRACT This dissertation presents some advances in invariance and its applications in computer vision.

本文介绍了作者在计算机视觉中的不变性研究和应用方面所取得的最新成果，全文共分六章。

The invariance of physical laws enters in two ways .

物理定律的不变性以两种方式体现。

This paper proved that this algebraic feature has some important properties of algebraic and geometric invariance.

该文证明了这样抽取的代数特征具有一些重要的代数和几何不变性。

The definition and criterion of the form invariance are given.

文献[2～6]研究了力学系统的形式不变性。

Invariance under translation in time leads to conservation of energy.

在时间平移下的不变性导致能量守恒。

Firstly, the invariance of boundaries in image under topological transformation has been well developed.

本文从计算机视觉和人类视觉两方面讨论视觉模式的感知不变性。

The uplink synchronization mechanism is using the invariance of the preamble which is also known to the base station.

我们在接收端的上行同步处理机制是利用上行传输资讯的不变性，直接对收到的信号作相关性的运算。

It is characterised by two crucial properties,renormalisability and gauge invariance,which we mention briefly here.

资讯科技是藉着二决定性的财产， renormalisability 和标准度量不变性表示的特色，我们在这里简短地提到。

Based on scale SVD transform, a target feature extracting method is proposed to solve this difficult problem. The experimental result shows that this method has favorable stability to target matrix's SVD feature vectors, and high invariant property to displacement, rotation and scale.

为解决这一技术难题，文中提出了基于尺度奇异值变换的红外图像目标特征提取方法，实验表明该方法提取的目标矩阵的奇异值特征向量具有较好的稳定性，对图像的平移、旋转和比例变化具有良好的不变性，是一种实用的特征提取方法。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐