变换

Four kinds of discrete transform principal component regression methods were established by combining wavelet packet transform, wavelet transform, Fourier transform and discrete cosine transform with principal component regression. Calculating programs were designed to perform the calculation by discrete transform principal component regression methods.

将离散小波变换、小波包变换、傅里叶变换和离散余弦变换与主组分回归方法结合构成4种离散变换主组分回归方法，编制了离散变换主组分回归方法的计算程序。

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Second, the advantages and disadvantages of the image coding based on traditional wavelet transform are discussed. The method of constructing reversible IWT using lifting scheme is presented. So an image coding method using IWT in place of traditional wavelet transform is put forward.

具体介绍了静态图像编码的概况，以及基于传统小波变换的图像编码方法及其缺点，讨论了用提升方法构造可逆整数小波变换的方法，提出用整数小波变换代替传统小波变换，进行图像编码。

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This article introduced X signal gathering different method and the concrete realization, discussed the picture inversion technology in the medicine picture processing function, specifically analyzed the Laplace-transformation, the separate cosine transformation, Hada Masurium transformation and the wavelet transformation.

此外，本文介绍了X线信号采集的不同方法及具体实现，讨论了图像变换技术在医学图像处理中的作用，具体分析了拉普拉斯变换，离散余弦变换，哈达玛变换及小波变换等。

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Results indicate that the Box-Cox approach provides better normality for data transforms, but in the case of evaluation by the statistical properties of the estimations on quantiles through reverse transform, the PNT is superior to Box-Cox method.

研究表明，Box Cox变换后样本的正态性更优，若以反变换后对水文设计值估计的统计性能评价，则以多项式正态变换的效果更优。

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In section 4, it is demonstrated that τ-p transform, performed by a computer in the same way as fan filtering, is only one form of Radon transform.

第四节论述了τ-P变换是Radon变换的一种形式，τ-P变换在计算机上实现的过程与二维傅氏变换扇形滤波相似。

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Typical methods of the first class consist of predictive deconvolution, normal moveout interconversion stacking, f-k transformation, tau-p transformation, parabola Radon transformation and beamforming. They can be called as seismography method based on the geometry.

比较典型的方法有预测反褶积、正常时差变换叠加、f-k变换、τ-p变换、抛物线Radon变换和聚束滤波等，它们可以简称为基于几何地震学方法或几何滤波类方法；

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All of us can change our behavior to fit different situations.

我们都能依据不同的场合变换我们的言谈举止.

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The physical origin of the gauge transformation is a mystery.

这个规范变换的物理起因还是个谜.

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The continuous transformation connects smoothly to the unit operator.

连续变换光滑地衔接到单位算符.

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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.

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This paper discusses a code converter which converts A-Law PCM to Adaptive Syllable Companding DM ( ADM) and from ADM to A-Law PCM. In order to perform the conversion, we adopt a kind of special filter-multirate filter.

本文讨论了一种码变换器，它实现了A律PCM与音节压扩DM（ADM）间的码型变换，该变换采用了一种特殊滤波器（多速率数字滤波器）。

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The ridgelet transform is a new directional multi-resolution transform, which is more suitable for describing signals with high dimensional singularities.

Ridgelet变换是继小波变换之后提出的一种新的多尺度变换，它能比小波变换更好地表达高维线性奇异性。

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Embedded the watermark information into intermediate frequency in the DCT-based watermark algorithm. Improved the DCT transform speed by using FDCT instead of DCT. Quantized the frequency coefficients by using quantized table made from mentality visual threshold.

在基于DCT的数字水印算法中利用FDCT变换实现DCT变换，大大提高了变换速度，为了得到中频系数采用了依据心理视觉阈值制作的量化表对频率域系数进行量化。

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The culmination of the work on singularities is two famous transformation theorems.

奇点研究的顶峰是两个著名的变换定理.

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This procedure realize orthogonal transformation images, including Fourier transform, discrete cosine transform, Walsh transform.

本程序实现图像的正交变换, 包括傅立叶变换, 离散余弦变换, 沃尔什变换.

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A linear transformation on Milbert space is called compact ( also completely continuous ).

希尔伯特空间上的线性变换叫做紧的 ( 也叫全连续的 ).

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We choose wavelet and wavelet packet because wavelet transform ( WT ) itself has the character of multiresolution.

之所以选择小波和小波包变换是因为小波变换本身就是多分辨率的,这使得它比那些固定分辨率的变换,比如STFT ( 短时傅立叶变换 ) 更加适合人类的生理声学模型.

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You are welcome to vary the diet.

我们鼓励不时变换饮食。

《柯林斯高阶英汉双解学习词典》

Firstly, applied coordinates transformation and input transformation, the nonlinear system is transformed into partially linear controllable system.

首先通过坐标变换和输入变换，将非线性系统变换为部分线性可控系统。

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The method adopts the frequency domain masking technique to mask the peak fields of the radar echos' Fourier transform data, and uses the fractional correlation comprising of Fractional Fourier Transform ( FrFT) and inverse Fourier transform to detect the ARM only in one-dimensional searching.

该方法利用雷达回波的频域（Fourier变换）数据，根据尖锋作遮隔处理后，直接运用基于分数阶Fourier变换（FrFT）和Fourier逆变换的分数阶相关方法，通过一维搜索来检测ARM。

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Third, based on the B-spline method, it used the Atkinson method of the transformation parameter on the bond date and compared the results.

第三章选取上交所交易的国债的一组数据，以B-样条函数为基础，利用上一章的结果以及Box-Cox变换求解变换参数的Atkinson方法，进行数据变换，比较了变换前后的结果。

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This set of orthogonal transforms start with walsh-Hadamard transform and end with discrete Hartley transform.

这类正交变换以Walsh-Hadamard 变换开始,到Hartley变换结束.

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A television flickered in the corner.

电视机在角落里时明时暗地变换着画面。

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The chameleon changes colour to match its surroundings.

变色龙变换颜色以适应环境.

《简明英汉词典》

He shifted his position from the horizontal.

他从水平姿势变换成其他姿势。

《牛津高阶英汉双解词典》

We carry out a transformation to spherical polar coordinates.

我们变换成球极坐标.

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He is always switching jobs.

他总是变换工作.

《简明英汉词典》

From time to time he shifted his position on the handlebars.

他不断地变换着握把的姿势.

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The helmsman could tack the boat singlehanded.

舵手独自一人就能变换航向。

《柯林斯高阶英汉双解学习词典》

To derive the transformation equations , we return to Fig. 14-1.

为了求出这个变换式, 我们回顾图14 - 1.

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