查询词典 wavelet

A novel SAR despeckling method using Bayesian shrinkage in local wavelet coefficient domain is presented.

提出了一种抑制SAR图像斑点噪声的小波域贝叶斯软阈值方法。

In the discrete wavelet transform domain, the watermark information is embedded by quantifying the coefficient of the transform domain andthe watermark can be extracted without the original audio.

在离散小波变换域水印嵌入算法中，本文给出了小波变换域系数均值量化的水印嵌入方案。

In the discrete wavelet transform domain, the watermark sequence is modulated with m-sequence at first, then the watermark information is embedded by quantifying the coefficient of the transform domain. The quantification procession is given.

4在离散小波变换域，先对水印序列进行扩频调制，然后通过对变换域系数进行量化来嵌入水印信息，给出了量化方案；在水印的提取过程中不需要原始音频信号的参与。

A new method based on subtractive image segmentation for weighted image fusion is put forward from another viewpoint. It adopts the improved particle swarm optimization to calculating the segmentation threshold of subtractive image and the corresponding weighted fusion coefficient in space domain or in wavelet decomposition domain. Moreover, it doesnt need to construct the eigenspace and quantitative eigenvalue for the weighted fusion coefficients.

本文从另外一个角度提出了一种基于差值图像分割的加权图像融合方法，它采用改进的粒子群优化方法在空间域或小波分解域求解差值图像的分割阈值和对应的加权融合系数，而不需要为计算融合系数而构造特征空间和定量特征关系。

The algorithm performs discrete cosine transform on sub image of host image, which is cover by visible watermarking, and compresses sub image by select the set of visually important DCT coefficients. Then, the algorithm hides the compressed sub image, which is encrypted by the hash function that is constructed by Rijndael code, in the high coefficient of wavelet domain.

算法将水印图像与宿主图像进行融合，并对隐藏子图采用DCT变换，按Zig_Zag排序保留视觉重要DCT系数的方法作压缩处理，并利用Rijndael密码构造单向Hash函数作加密处理，最终分散嵌入到宿主图像的带参数的整数小波域中的高频系数，实现了可见水印的有效嵌入。

The wavelet coefficient energy group of time-frequency surface has distinct difference for different swept extent.

储层的孔隙度和电阻率曲线间微差形态波形的复杂程度隐含着储层含油气性的信息，油层水淹程度不同，其时频平面上小波系数能量团存在着显著差异，随水淹程度加重，其能量团分布由复杂逐渐趋于简单单调。

In other schemes, such as [11], and may be partitions of wavelet coefficient space.

在其他方案，如[11]，并可以划分的小波系数的空间。

3D image of the nanoscale indentation of crystal aluminium is got via in situ scanning by nanopositioning platform and nanoindenter. Bior3.3, coif 2,and sym8 wavelet were adopted in noise reduction,enhancement and fusion of image,respectively.

采用纳米压痕仪对单晶Al进行纳米级压痕，利用纳米定位平台原位扫描技术获得了三维图像，使用bior3.3， coif 2，sym8分别对所得图像进行降噪、增强、及融合处理。

A new method based on FWCM (fast wavelet collocation method) for time domain steady state simulation of nonlinear dynamic circuit is proposed.

本文提出一种基于快速小波配置法的非线性动态电路时域稳态模拟方法。

In this paper,we propose zero-padding as a boundary-processing method for orthogonal wavelet transform with compact support.

本文主要探讨了正交小波中低通滤波器hn的支撑为［0，M］(即hn≠0，n=0，1，…，M；hn=0，n为其它值)的小波变换的边界处理问题，提出了零延拓是其较好的选择。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。