旋转变换

它省掉了许多坐标旋转变换及复杂的运算，其控制思想新颖、控制结构简单、控制手段直接。

Therefore , much coordinate rotate transformation and complicated computation are saved and the control method is novel , simple and direct .

但是，与快速傅立叶变换相比，倍频旋转变换理论所需要的计算时间很长，这在一定程度上影响了它的广泛应用。

But compare with FFT , the calculation time needed by the multiple frequency rotate transform is very long , which has influenced its wide application to a certain extent .

应用反转法及坐标旋转变换设计凸轮廓线及Matlab仿真

Design of cam contour using the reversal and coordinate rotation and Matlab simulation

利用FFT实现图像的快速高质量旋转变换

Algorithm for the rotation transformation of image by using FFT with fast and high quality

旋转变换和viterbi算法在波动方程叠前深度偏移预处理中的应用

Application of Rotation Transform and Viterbi Algorithm in Prestack Depth Migration Preprocessing of Wave Equation

本文尝试另辟新径，避免引入辅助函数而直接用坐标旋转变换来证明Lagrange中值定理。

In this article , the author attempts to make a fresh start , demonstrate Lagrange mean value theorem directly by coordinate revolution transformation .

最后用实例验证了本文的基于Hausdorff距离的图像匹配算法在考虑了小旋转变换模型的情况的可行性、实时性，以及抗干扰性。

Finally several examples is used to verify the image matching algorithm based on Hausdorff distance , considering small rotation .

根据数学上的旋转变换和Lyapunov函数判别法设计了相应的同步控制器，实现了两个同结构混沌系统和两个异结构混沌系统的投影同步。

Synchronization controller is designed according to rotation transformation theory and Lyapunov stability theory to realize synchronization between chaotic systems with the same structure or different structures .

双曲Cholesky分解中的快速双曲旋转变换

The fast hyperbolic transformation in hyperbolic Cholesky factorization

对称系统的二维Mueller矩阵的花样图中仅有7幅独立，其余9幅可通过对称、旋转变换得到。

To the symmetrical system , only seven elements of the backscattering Mueller matrix are independent .

此外，针对三相电网电压相序问题，提出了一种基于同步旋转变换的相序识别方法，并在此基础上，实现了三相交流电相序自适应APF控制。

In addition , this thesis proposed one software phase-sequence identification method based on the synchronous rotation transform and the phase-sequence adaptive control of APF is realized .

采用傅立叶变换、旋转变换、小信号线性化三种技术，对在幅相控制下的PWM交-直电压源变流器作了全面分析。

A comprehensive analysis of a pulse-width modulated ( PWM ) AC-DC voltage source converter is made by means of the three techniques : Fourier , transformation of reference frame , and small signal linearization .

指出圆域B样条曲线与区间B样条曲线相比，除了同样可以表示一条B样条曲线的误差范围外，还具有存储的信息量小以及在旋转变换下保持误差域不变等优点。

When we compare the disk B-spline curves with interval B-splines curves , it also can represent the error range of B-spline curves , besides , it has the advantage of smaller storage information and the error range won 't be changed under the rotation transition .

实验结果表明，此算法对叠加噪声、JPEG压缩、平滑滤波、几何剪切、旋转变换等攻击均具有较好的鲁棒性。

Experimental results show that the proposed watermarking scheme is robust against various signal processing such as noise adding , JPEG compression , smooth filtering , cropping , and rotating transform .

基于PIFS分形图像编码中8种对称旋转变换的有效性研究

Study on Validity of 8 Isometry Transforms Used in PIFS Based Fractal Image Coding

同时阐明了如何操纵AutoCAD数据库中有关实体进行位置变换的方法，尤其是进行旋转变换时坐标向量与变换矩阵的对应关系。

Simultaneously , the method of how to manipulate the position transformation of solid body in the database of AutoCAD is explained , especially the relationship between coordinate vector and transformation matrix when conducting rotational transformation .

在三相PWM整流器系统分析和同步旋转变换控制方法的基础上，根据网侧输入电压空间矢量所在的扇区以及三相输入电流方向提出了一种新的换流分析方法。

On the basis of sectors in which the special voltage vectors on networks are located and the directions of three phased currents , a new analysis method for current switching of three phased PWM rectifier was put forward .

文中采用坐标旋转变换、应用Gauss散度定理及Stokes定理，建立了用角点坐标和磁性参数值表示的均匀磁化多面体磁异常各分量及总磁异常的精确表达式。

The accurate formulae which express component and total magnetic anomalies of uniformly-magnetized polyhedron by using angular coordinate and magnetic parameters are derived from coordinate-turning conversion , Gauss ' divergence theorem and Stokes ' theorem .

本文介绍了一种适用于嵌入式GIS系统的矢量地图坐标数据存储结构，并通过地图高速坐标转换算法、高速旋转变换算法、地图空间索引等几种方法实现矢量地图的高速显示。

This article introduces a storage structure-suitable for Embedded GIS System-of vector map 's coordinate data , and with the high-speed Coordinates Transform Algorithm , high-speed rotation Transformation Algorithm and Spatial Indexes etc. , high-speed drawing of vector map can be realized in the embedded system .

利用递推正交最小二乘法（ROLS），采用改进的Givens旋转变换技术避免了大型矩阵的QR分解运算。

The recursive orthogonal least squares ( ROLS ) algorithm is considered . The use of modified Givens rotations avoids orthogonal decomposition of complex matrices .

分析了基于部分迭代函数系统（PIFS）的传统分形图像压缩编码中8种对称旋转变换对编码性能的影响；

The effects of 8 isometry transforms used in PIFS based fractal image coding on performance are discussed .

本文首先研究了几种正面到斜面的传输方法，并根据Fourier空间内波矢的旋转变换，综合出了可逆的谱旋转方法，解决了正面到斜面的可逆传输问题。

To solve the reversible propagation between vertical plane and incline plane , several propagation methods have been researched . According to the rotation of wave vector in Fourier space , we have found a reversible transform of spectrum rotation solving the hard problem .

另外，利用ICA算法提取出的特征可以准确地检索出运动模糊图像的原图像，且对噪声污染、旋转变换和缺损图像具有良好的鲁棒性。

In addition , original image corresponding to motion blurred one can be found accurately according to the features extracted by ICA . Furthermore , the proposed retrieval algorithm is found to be reasonably robust to noise , rotation and defectiveness .

根据几何旋转变换原理，提出了利用初始位置、GNSS远距离观测位置和惯导推算位置计算方位失准角的方法，分析了该方法的误差影响因素。

Based on geometric rotation transformation fundamental , another azimuth alignment method by using initial position , GNSS observation positions far from start point and SINS calculating positions is proposed , and error analysis is also made .

对于机构串联部分，通过选取运动副坐标，确定构件的D-H参数，再通过旋转变换得到运动副位置变换矩阵，对位置变换矩阵求导，得到运动副速度。

For series section of Institution , determining the components of D-H parameters from selecting a deputy campaign coordinates . We can get transformation matrix of deputy campaign position by the rotation transformation .

提出了基于Householder变换的排序QR分解检测和基于Givens旋转变换的排序QR分解检测算法，仿真结果表明提出的这两种排序QR分解检测算法与D。

Proposes two sorted QR decomposition detection algorithms based on Householder transform and Givens rotation transform . The results show that the proposed algorithms achieve the same performance of the sorted QR decomposition detection algorithm based on Gram-Schimidt transform proposed by D.

最后论文对生成的GPU的软件库进行了功能的验证，如平移、旋转变换，以及光照运算，剔除与裁剪，投影以及光栅化等功能进行验证，实现了图形芯片功能的模拟。

At the last of this paper , the main work is to test and verify the function of software model , such as translation , rotation transformation , lighting operation , remove and cut , projection and raster features . Succeed in simulating the embedded GPU chip .

针对MPSK信号的分类问题，提出一种新的基于高阶统计量的分类特征.新特征对MPSK信号星座图的平移、尺度和相位旋转变换具有不变性，并可抑制有色和白的加性高斯噪声。

A new feature based on higher order statistics is proposed for the classification of MPSK signals , which is invariant with respect to constellation translation ( shift ), scale and rotation , and can suppresses the color or white additive Gaussian noise .

运用旋转变换解决了测线与坐标轴方向不一致的问题，用viterbi算法完成了同向轴的自动拾取，结果令人满意，为波动方程叠前深度偏移预处理提供了两种有效可行的方法。

This paper deals with the variance between the seismic line and the coordinate orientation by rotation transform and realizes the auto pickup of events by Viterbi algorithm , obtaining satisfactory results . These two methods are feasible to preprocessing of prestack depth migration of wave equation .

与利用Givens旋转变换进行参数递推估计的方法相比，该方法直接表征了被辨识参数的递推计算关系，因而可直接判定递推估计算法的收敛性。

Compared with the traditional Givens - rotation based algorithms , the author - proposed method expresses the recursive relation of the parameters to be estimated plainly and directly , and hence the algorithm convergence can be easily drawn as a conclusion .