您要查找的是不是:
- vector- valued wavelet packets 向量值小波包
- matrix valued wavelet packets 矩阵值小波包
- Colligating AR parameter model coefficient and Wavelet packet decomposition energy feature,we get feature vector of battlefield sound-target. 综合AR参数模型系数和小波包分解能量特征,获得战场声目标特征矢量。
- The comparison of quality parameters is made with block adaptive quantization(BAQ),block adaptive vector quantization(BAVQ) and wavelet packets transform block adaptive quantization(WPT-BAQ). 并与块自适应量化(BAQ)、块自适应矢量量化(BAVQ)以及小波包变换块自适应量化(WPT-BAQ)方法进行了性能比较。
- Wavelet packet decomposition (WPD) was applied to feature extraction of ultrasonic signals, chaos-genetic optimization to eliminate redundant and irrelevant features and support vector machine to perform the identification task. 该系统采用小波包分解提取超声信号的特征,采用混沌遗传算法来消除冗余和不相关的特征,并采用支持向量机(SVM)来对缺陷进行识别。 为了验证系统的有效性,在实验室内作了大量的超声检测实验。
- In this paper, we present a construction of M-band interpolatory wavelet packets. 摘要本文给出M-带插值小波包的构造。
- We presented a novel watermarking method based on wavelet packets transform and human visual system (HVS). 摘要提出一种基于人类视觉特性和小波包分解的数字水印算法。
- This article is to investigate biorthogonal matrix-valued wavelet packets in higher dimensions. 摘要研究高维矩阵值双正交小波包的构造及性质。
- We presented a novel watermarking method based on wavelet packets transform and human visual system(HVS). 提出一种基于人类视觉特性和小波包分解的数字水印算法。
- Firstly, the characters of wavelet transform and wavelet packet analysis were introduced. 首先,简略地介绍了小波变换与小波包分析的特点。
- Combined with the traits of wavelet packets decompositions, an algorithm for iris recognition was presented in this paper. 文中结合小波包分解的特点,提出了一种基于小波包分解的虹膜识别算法。
- The high frequency signal can be decomposed, and the frequency field can be divided into tinier ones with the emerging of wavelet packets. 摘要小波包的方法能对高频信号进行小波分解,给出了频域带更精细的划分。
- In this article, we study first the main characters of cab FSK signal, then the wavelet packets method is applied to the FSK signal filtering. 本文首先研究了车载FSK信号的特征,再利用小波包对车载FSK信号进行滤波处理。
- The definition of the biorthogonal multiple vector-valued multivariate wavelet packets and a procedure for constructing them were given. 给出多元多重向量值双正交小波包的定义及其构造方法。
- 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。
- The wavelet packet transform can be used to compress seismic data in large batch processing. 在大批量地震数据处理中可以使用小波包变换压缩地震数据。
- Finally,the possibility of wavelet packet modulation application in Digital AM transmission system is discussed. 通过与基于离散傅里叶变换的正交频分复用调制系统进行比较 ,探讨了小波包调制应用于数字调幅传输系统的可能性
- Abstract: We developed a real-time wideband speech codec adopting a wavelet packet based methodology. 摘要:本文论述采用小波包法进行实时宽带语音编码。
- In this paper,mean threshold is presented on which wavelet packet de noising is studied. 文中提出了平均阈值的概念 ;并在此基础上研究了小波包去噪的效果 .
- It has been proved that the wavelet packet de noising is an effective method prior to wavelet de noising. 仿真结果表明 ,基于平均阈值的小波包去噪是一种有效的去噪方法 ,其效果优于小波去噪