图象映射

For a monotone twist map the well-known Birkhoff fixed point theoremsays that the circles with rational rotation number will break up whence a finitenumber of pairs of periodic points arise,half of which are elliptic and the othershyperbolic.Moreover,around each elliptic periodic point a few of new invariantcurves will appear and make a picture of phase space with a self-similar structure.Again one may ask is there a similar picture for higher dimensional Hamiltoniansystems?

对于单调扭转映射，著名的Birkhoff不动点定理指出，在通有情况下旋转数为有理数的不变曲线一般会破裂，在原来的不变曲线附近会产生有限多对周期点，其中一半是双曲的，一半是椭圆的，而在椭圆型周期点的周围又会产生一圈圈的不变曲线，使得椭圆周期点附近的动力学行为和整个相空间的动力学行为十分相象，换句话说，整个相空间具有无限嵌套的自相似结构，自然又产生了一个问题：对于自由度数目大于2的高维哈密顿系统，其相空间是否有类似的图象？

The magnitude of opened angle at a point p i in the contour can be easily calculated by the law of cosines, and its local extreme correspond to the sharper changes of the contour of the mode.

同时将特征匹配定义为模型特征与遮挡图象特征之间的对应，若这种对应被映射到 Hopfield神经网络上，则该网络即可用于完成全局特征匹配。

One is local entropy difference image matching parallel algorithm based on LS MPP, and the other one is local entropy difference image blocking matching parallel algorithm which is designed and realized by strategy combined folding sum, overlay windows mapping, with recurrence calculation column sum and row sum.

一种是基于LS MPP的局部熵差图象匹配并行算法，另一种是综合运用折叠求和，叠加窗口映射，递推求列和与递推求行和策略设计并实现的局部熵差图象分块匹配并行算法。

The former mainly functions to quantize DCT coefficients gained after one—dimensional DCT to make it maps a range of 0—255 and form spectrally—decorrelated eigen images of JPEG compression.

一维量化器的主要作用是量化一维DCT变换后得到的DCT系数，使其映射到0～255范围内形成可由JPEG算法压缩的特征值图象。

In this paper, we show the implementation of an image based spherical virtual in door environment.

该技术是基于一些预先生成的图象或者所谓的环境映射图，来实时生成不同视点的场景画面。

In this paper, the computer-integrated system, aimed at textiles design and 3D dressing rendering, is constructed with making use of theories of textiles design and 3D dressing modeling, combining the means of mathematics matrix computing, computer graphics and digital image technology. Some investigations on technology issues, such as automatic generation of weaves, simulation of fabric, modeling of 3D human body and garment, and texture mapping of fabric to garment, are also made.

本论文针对纺织品服装设计，运用纺织品设计理论、三维人体服装建模理论，结合数学矩阵运算、计算机图形学、数字图象处理等技术手段，构建了织物设计与三维实体着装模拟这一集成系统的框架结构，对织物组织的自动生成、织物外观仿真、三维人体服装的构造和曲面拟合、织物对三维服装的纹理映射等技术问题和算法，进行了较深入的研究和探讨。

This paper presents a Double Kohonen Neural Network lased on the Self－Organize Feature Mapping theory to analyge chomosome automatiolly. The DKNN consists of two layers, each of which is a Kohonen network. The first layer maps a 2－d plane to a 2－d feature space to extract the high－resolution bands of chromosome and to compute the parameters of bands. The second layer maps the arrays of high dimension feature parameters to a 2－d plane to pair and classify the chromosomes automatically.

应用自组织特征映射神经网络原理与方法，建立了双层Kohonen神经网络，其第一层是从二维图象平面到二维特征平面的映射，用于染色体高分辨率带纹的提取和带纹参数的计算，第二层是高维特征参数阵列到二维聚类平面的映射，用于同源染色体的自动配对和分类。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。