查询词典 matrix transform

First, the proposed scheme uses contourlet transform to extract multidirectional and multiscale texture information, and then obtains the feature points invariant to the affine transformation from the low and middle directional subbands by Harris-Affine detector. Second, the feature regions are adaptively computed by the feature scale of the local structure and normalized by U transform. The watermarking is embedded adaptively in those characteristic regions which are normalized. Finally, by vector quantization, several copies of the watermark are embedded into the no overlapped local feature regions in different directional subbands.

首先，用Contourlet变换提取出多尺度、多方向的纹理信息；再用Harris-Affine检测算子从变换域的中、低频方向子带中提取出仿射不变特征点，结合自适应局部结构的特征尺度确定特征区域，并用U变换对其归一化处理，水印就自适应地嵌入到归一化后的区域中；水印嵌入采纳矢量量化的策略，将水印信息重复嵌入到不同方向子带、多个不相交的局部仿射不变特征区域。

The transform of phenotype of VSMC: The mRNA expressions of SM22α-a notate gene of contractile VSM-were all detected on normal aortas,but decreased normally when the aortas were destroyed and cultured in vitro for 10 days,especially in the serum groups,whose SM22αmRNA could not be detected by RT-PCR.Here,BQ123 can increased their expressions.This demonstrated that serum culture and the secretion of ET-1 can produce the transform of phenotype from contractile to synthesize type.

血管平滑肌表型的转化：RT-PCR检测发现，血管平滑肌收缩表型标志基因SM22α在正常血管平滑肌中都有表达，但在内皮损伤后体外培养10天的血管表达明显减弱，其中血清培养组血管基本不表达，加内皮素受体阻断剂BQ123后，各组SM22α的表达均有所上调，这表明内皮素分泌和血清培养促进了血管平滑肌的表型由收缩型向分泌型的转化。

The results obtained from three different methods—the conventional numerical differentiation, the discrete wavelet transform method and the proposed continuous wavelet transform method were compared, it was demonstrated that the results are similar for signals without noise, but the signal-to-noise ratio of the result obtained by the CWT method is improved greatly comparing with the former two methods for noisy signals.

通过数值微分法、离散小波变换法及连续小波变换法对模拟信号的求导结果表明：对于无噪音的信号，三种方法的结果相似，而对于含有噪音的信号，连续小波变换法所得结果的信噪比明显高于前两种方法。

It lets you transform an XML document into a hierarchy of Java objects or, inversely, transform a Java object hierarchy into XML format.

可以让你把一个XML文档转换成一个JAVA对象层次，或者，相反的，转换一个JAVA对象层次为XML格式。

In order to improve the redundancy and computing capability of S transform, a more efficient representation is introduced, by introducing an orthogonal set of basis functions that localizes the spectrum and retains the advantageous phase properties of the S-transform.

为了改善S变换的冗余度，提高S变换的计算能力，研究了S变换的一种有效表示。通过引进一组正交基函数来局部化频谱，并保留S变换相位特性上的优势。

KL Transform Matlab realize KL transform is a kind of orthogonal transformation image in the field of image compression have broad application.

详细说明： KL变换的Matlab实现 KL 变换是图像正交变换的一种，在图像压缩领域有着广泛应用。

In this paper, we first discuss some basic theories about wavelet analysis, including some definitions about wavelet analysis, multi-resolution analysis, the decomposition and reconstruction algorithm of wavelet transform, orthonormal wavelet decomposition of the signal, and a few important properties of wavelet transform.

本论文中，我们首先讨论了小波分析的基本原理，包括了小波分析的基本概念，多分辨分析，小波变换的分解算法和重构算法，信号的正交小波分解，以及小波变换的几个相关的重要性质，这些都是我们进行研究和应用的基础。

Using normal distribution transform probability model to represent a laser range scan.Not need features corresponded,but transform the discrete scan date to the piecewise continuous and differentiable probability density function,and using Newton's algorithm to optimize scan matching,so can build the 2D global map.

利用正态分布转换概率模型来表示激光扫描，不需利用特征对应，而是通过将扫描得到的离散数据点转换成分段连续可微的概率密度函数，并利用牛顿优化算法来进行扫描匹配，从而建立2维全局地图。

The main works are as follows:Firstly, in order to produce quincunx down sampling and up sampling which could form directional wavelet transform, the rotated factor matrixes is introduced based on discrete wavelet transform.

在遥感图像去除噪声的过程中提出一种软阈值映射函数，在不同尺度的高频子带图像采用不同的软阈值增益，并采用新的阈值估计算法来确定不同分辨率的高频小波系数的分布来进行图像噪声的有效抑制。

A novel multisensor images fusion algorithm is presented based on lifting quincunx wavelt. First, the lifting quincunx wavelet transform is used to perform a multiscale decomposition of each image. Then, the wavelet coefficients of fused image are constructed using multiple operators according to different fusion rules. Finally, the reconstructed image is obtained through the inverse transform.

提出了一种基於提升方案的五株形小波的多传感器图像融合方法，即在提升五株形小波多尺度分解的基础上，对每一幅图像进行多尺度分解，按照不同的融合规则和融合运算子去构造融合图像对应的各小波系数，再通过逆变换重构融合后的图像。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。