变换

This paper introduces a new compression technique: Subband Coding and Wavelet Transforms, and discusses the fast algorithm of Wavelet Transforms.

介绍了新的压缩技术子带编码和小波变换，并讨论了计算小波变换的快速算法。

Digital watermark is embedded into the middle frequency subband images of the original image in discrete wavelet transformation domain.

研究基于小波变换域的数字水印的嵌入对策和检测方法，实现了数字水印自适应地嵌入到原始图像离散小波变换域的中频子带图像中。

The sulfurization techniques condition of RSB-M sulfur-tolerant shift catalyst is studied with fixed-bed reactor.

本文利用固定床反应器研究了RSB-M型耐硫变换催化剂的硫化工艺条件，如：硫化时间、硫化温度、硫化氢浓度、氢气浓度、硫化压力、催化剂粒度等因素对耐硫变换催化剂硫化度的影响。

The frequency response transformation from a lowpass to a band pass filter is given, the change of the filter susceptance with frequency being taken into account.

给出了低通到带通的频响变换式，这个变换式考虑了滤波器电纳随频率改变。

On certain condition the result can be reverted by controlling the transformation time because of the periodicity of the toral automorphisms transformation.

由于花托自同构映射变换在一定条件下具有周期性，使得通过控制变换的次数可以实现还原。

In this method the initial values of perspective projective matrix; rotative matrix and translative matrix are calculated from the fundamental matrix, than these matrices are optimized based on the coordinate value of corresponding points.

该方法从基本矩阵计算初始透视投影、旋转和竖直平移变换矩阵，然后以对应点坐标为基础对这些变换矩阵进行优化计算，从而有效地避免了优化计算的局部最小值，而且不过分依赖基本矩阵的计算精度。

An Integer Wavelet Transform with parameters is firstly constructed and the transmutative Rijndael code is used to construct a Hash function, and then a visible digital watermark algorithm based on the Integer Wavelet Translation with parameters, Discrete Cosine Transform and the Transmutative Rijndael encryption algorithm are presented.

构造出了带参数的整数小波，应用变型的Rijndael密码构造出了Hash函数。提出了一种基于带参数整数小波变换、离散余弦变换及变型Rijndael加密算法的可见数字水印算法。

The algorithm and application to unstationary signal analysis are distussed with wavelet transform in order to overcome defect of Fourier transform only applied to stationary signal analysis on frequency domain.

论文针对传统Fourier变换只能在频域上对稳定信号进行分析的不足，探讨了利用小波变换进行非平稳信号分析的算法和应用，并在两者之间做了比较。

Simulation experiments' data show that by using this methods it can precisely generate non Gaussian correlate random sequence with specified probability density and power spectrum,and reproduce verisimilarly the scatter coherent video signal of radar sea clutter containing both amplitude and phase.

其中迭代算法用来计算非线性变换过程中高斯序列相关性的变化，而随机向量法用来完成线性变换，仿真实验数据证明利用这种方法可精确地产生具有指定概率密度和功率谱的非高斯随机序列，逼真地复现既包含振幅又包含相位的雷达海杂波相干视频散射信号。

In the absence of the chairman, his deputy take the chair

二进制运算中的一种求反过程，在这种过程中，二进制数中的所有1都变换成0，所有的0都变换成1。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。