查询词典 unitary invariant

By using ways such as Darboux transformation, invariant group and Painleve analysis, we can find exact solutions of nonlinear evolution equations.

特别，在本课题中，我们发展了一套求解高维非线性方程和方程族的方法。

These representations are essentially invariant under rotation, uniform scaling, and translation of the curve.

根据这几种表示法，即使旋转、缩放或者平移图像，其形状也基本不变。

In this paper, we propose a new approach to recognize occluded objects. The information of the magnitude of the local extreme of the open angles in the contour of a model at a scale, the information of the distance and relative location between the two adjacent dominant points are suitably integrated as a set of features for describing a model, the features are invariant under rotation, uniform scaling, and translation of the curve.

该文提出了一种新的识别有遮挡目标的方法，即将目标模型和含有目标的遮挡图象的轮廓在某一尺度上张角的极值、极值点之间距离、相对位置等信息集成在一起，作为描述目标模型的一组特征，且这组特征在平移、旋转和均匀尺度变换下保持不变。

In this paper a method for wavelet transform based on translation invariant in the image denoising area is researched.

平移不变量小波变换在图像降噪中的应用，主要通过阈值方法来有效的降低图像的噪声，但它的结果中会出现诸如伪吉布斯现象之类的情况。

This method takes full use of translation invariant of NSCT and enhances detail keeping ability.

由于充分利用了NSCT变换的平移不变性，使去噪后的细节保护能力增强。

For a system, Hamiltonian is invariant under any translation of spatial coordinates.

对于一体系，哈密算符在任何空间坐标变换下是不变的。

Analyze of digital image watermarking with rotation, scale and translation invariant.

对抵抗几何攻击的数字水印算法进行分析，介绍了几种对RST鲁棒的水印算法的思路。

The reason is that the de_noising algorithm lacks of wavelet translation invariant.

基于传统的小波变换去噪算法可能使信号的急剧变化部分产生人为的振荡现象，产生这种现象的一个直接原因是小波缺乏平移不变性。

From the properties of Radon transform, the translation and rotation invariant is derived from the polar Fourier transform.

根据Radon变换的属性，可以从极傅立叶变换推导出一种旋转和平移不变量。

The Fourier descriptors of objects boundary are taken as the features being invariant to translation, rotation and scale changes.

由于所识别的工业工具具有一个自由度，它们的形状有一定的动态变化范围，导致同一目标的形状特征矢量的不唯一性。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。