查询词典 matrix transform

Last, this paper introduced some concepts of multiscale geometrical analysis and curvelet transform theory. Because curvelet can showed this feature more 'sparsely' in the function included singular curve or singular side in two dimension space or multi-dimension space. This paper provided a robust digital watermarking technology algorithm based on curvelet transform. watermarking information was embedded into coarse scale coefficients after curvelet transforming, choose right embedding strength. Testing proved it has good invisibility and robustness.

最后，介绍了多尺度几何分析和曲波变换理论的相关概念，鉴于曲波能对二维乃至高维空间中含奇异曲线或者曲面的函数进行更"稀疏"地表示这一特性，本章提出了一种基于Curvelet变换的鲁棒数字图像水印算法，该算法将水印信息嵌入到经曲波变换后的图像的粗尺度系数中，合理选择的嵌入强度，试验表明该算法具有较好的隐蔽性和鲁棒性。

Usually, the Fourier transform and the wavelet transform can not most sparsely represent an image.

在图像处理领域，图像的稀疏表示有着重要的理论和应用意义。

Based on theoretical model,the effects of spectral decomposition by MP algorithm was discussed,and compared to the spectral decomposition results of Gabor transform and wavelet transform.

阐述了基于Ricker小波MP算法的基本原理，给出了两步法MP快速算法的实现步骤。

Based on the multi-resolution wavelet transform, this paper proposes a new wavelet transform fusion algorithm on the basis of steerable filters to measure the area energy for the fusion of the pan and multi-spectral image.

基于多分辨率小波变换，针对高分辨率全色图像和多光谱图像的融合，提出了一种基于方向可调滤波器的区域能量测量的小波变换融合算法。

As an application of continuous wavelet transform,we discuss the relationsbetween some differemtial equaltions and the integral equations by using thecontinuous wavelet transform in 〓,vector function space andabstract function space respectively;prove that they are equivalent not only in theweak topology but also in the strong topology.

作为连续小波变换的应用，分别利用〓上的，多元函数空间上的，向量函数空间上的和抽象函数空间上的连续小波变换分别得到了某些线性微分方程，某些线性偏微分方程，某些向量线性微分方程和某些抽象函数的微分方程分别等价于其相应的积分方程，证明了它们不仅在弱收敛意义下而且在范数收敛意义下是等价的。

It uses a landing and taking-off method to implement 2D and 3D distance transform, and then uses a local directional maximum search method to perform skeleton transform.

该方法采用起飞-着陆法对二维和三维图像进行距离变换，然后采用局部方向最大值搜索法进行骨架变换。

Then do wavelet transform using fast wavelet transform algorithm, and then facial feature is enhanced by three high frequency parts using different threshold to enhance high frequency.

然后用小波快速算法mallat算法对图像进行小波变换，并且针对小波变换之后的三个高频部分分别设定阈值进行增强。

This paper proposed an improved algorithm of Top-hat transform based on graunulometry. Top-Hat transform can extract lighter objects and structures in gray image.

数学形态学中的Top-Hat变换是一种提取图像中局部较亮的目标或信息的技术。

Lifting wavelet transform algorithms, wavelet filter used to complete the image wavelet transform, examined a total image and video ...

提升小波变换算法，采用CDF97小波完成图像的小波变换，共研究图像和视频处理的朋友参考。

Transform is used to transform one image into another.

变换是用来转换成另一种形象。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。