搜索资源列表
jpegtool_matlab
- 关于利用离散余弦变换DCT的jpeg压缩的matlab源程序,简单实用,也有注释,很好读。-on the use of discrete cosine transform DCT jpeg compression Matlab source, simple and practical, the Notes have a good time.
MODWT-c.zip
- Maximal Overlap Discrete Wavelet Transformation, implemented in C. Shift invariant transform, useful for application of multiresolution time series analysis. Includes basic Wavelet coefficients Haar, Daubechies, Least Asymmetric.,Maximal Overlap
JPEG2000_9_7_002.pdf
- 基于实数的二进制表示法,把CDF(Cohen,Daubechies and Feauveau)9/7双正交小波基的提升系数化为二进制,采用简单的移位一加操作代替结构复杂的浮点乘法器,从而实现了JPEG2000中9/7离散小波变换的定点计算.相对于浮点计算法,移位一加操作最大的优点是计算简单,特别易于超大规模集成电路实现,因而使硬件实时处理图像信号成为可能.实验仿真结果表明:在低压缩比的情况下,用移位一加操作重构的图像,其峰值信噪比(PSNR)只比浮点法低0.10 dB,当压缩比增大时,其PSNR
bobianhuan
- 1.加深对离散时间信号的DTFT基本概念的理解。 2.熟悉DFT变换原理及其基本性质。加深对DTFT和DFT相互关系的理解 3.熟悉FFT算法原理和FFT子程序的应用 4.掌握用MATLAB计算离散时间信号的DTFT和DFT的方法,FFT函数的用法。 -1、Deepen their understanding of discrete-time signal DTFT understanding of basic concepts. 2、DFT-familiar with th
wavelet
- 小波变换和离散时间域的多分辨率分析。是学习信号处理的号资料-Wavelet transform and discrete multi-resolution time domain analysis. Number of learning data signal processing
featureOfDWT
- Discrete Wavelet Transform,[1]离散小波变换是指在特定子集上采取缩放和平移的小波变换,是一种兼具时域和频域多分辨率能力的信号分析工具。此变换运用可以缩放平移的小波代替固定的窗进行计算分析,主要应用于信号编码和数据压缩-Discrete Wavelet Transform, [1] the discrete wavelet transform is adopted in a specific subset of the zoom and pan on the wavel
fft
- 本程序用具进行傅立叶变换,将时间离散的信号,变换到频率域-This procedure appliances, Fourier transform, time-discrete signal, transformed to the frequency domain
two_d_dct_final
- 二维离散余弦变换,整个的硬件实现,可以加深对信号时域到频域转换的理解-Two-dimensional discrete cosine transform, the hardware implementation, can deepen the understanding of the signal time domain to frequency domain transform
discrete-Fourier-transform
- 1、用Matlab产生正弦波,矩形波,并显示各自的时域波形图; 2、进行FFT变换,显示各自频谱图,其中采样率、频率、数据长度自选,要求注明; 3、绘制三种信号的均方根图谱; 4、用IFFT回复信号,并显示恢复的正弦信号时域波形图。 -1, using Matlab to generate sine wave, square wave, and shows the respective time-domain waveform 2, FFT transform, disp
Discrete-Time-Fourier-Transform
- Discrete Time Fourier Transform f(t) to F(w)-Discrete Time Fourier Transform f(t) to F(w)
WaveShow
- 介绍了采用离散傅立叶变换(DFT)实现对采样得到的波形数据文件进行频谱分析的一般方法,并且为了提高运算效率、节省中间存储单元,最终采用了 时间抽选奇偶分解 的 库利-图基算法 实现快速离散傅立叶变换,对采样数据进行了高效的频谱分析,并用Microsoft Visual C++ 6.0编写实现-Introduced the discrete Fourier transform (DFT) is a general method of the spectrum anal
wavelet
- 一维,小波变换,算法,对离散时间序列进行分析。(One dimension, wavelet transform and algorithm are used to analyze the discrete time series.)