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Date : 2011-04-07 Size : 595byte User : sophie699

H.264压缩原理及实现细节,在进行H.264开发的朋友们值得一看-H.264 compression principle and the details during the development of the H.264 friends eye-catcher
Date : 2025-12-22 Size : 1.15mb User : sky

DL : 0
一个基于dct变换的数字水印算法的源程序,可供进行数字水印学习和研究的学生及科研工作者学习参考-DCT-based digital watermarking algorithm transform the source code, available for study and research of digital watermarking students and researchers to study the reference
Date : 2025-12-22 Size : 187kb User : 王晓华

校正任意形状DCT变换的矩阵不归一化,PSNR提高,基本是最佳校正方法-Calibration of arbitrary shape DCT transform matrix is not normalized, PSNR improve, the basic is the best correction method
Date : 2025-12-22 Size : 124kb User : linzhang

基于DCT的数字水印的Matlab仿真实现-Digital Watermarking Based on DCT of Matlab simulation
Date : 2025-12-22 Size : 188kb User : yinkexin

该算法实现了基于DCT域的图像水印算法,比较完整,清晰-The algorithm based on DCT domain image watermarking algorithm, more complete, clear
Date : 2025-12-22 Size : 160kb User : yinkexin

DL : 0
本文介绍了基于DCT 的图像压缩编码技术, 并给出了具体的实现方法和步骤, 既保证具有较高的压缩比, 又保证了较好的图像 质量。-This paper introduces the coding of image based on DCT , therefore,shows the details of realization . It provides high compressibility and high quality.
Date : 2025-12-22 Size : 202kb User : rainbow

OFDMA, Orthogonal Frequency Division Multiple Access is a broad band communication method. Here channel estimation is more crucial. Based on the FFT size used for OFDM transmission method that many number of channel co-efficients are to be estimated and received signals are to be equalized using this co-efficients. Various methods trying to improve the performance and fastness are proposed. As part of master thesis various methods have be studied and evaluated using the WiMAX 802.16 system.
Date : 2025-12-22 Size : 2.06mb User : muruga

Hybrid Model to Detect Zero Quantized DCT Coefficients in H.264 Hanli Wang, Student Member, IEEE, and Sam Kwong, Senior Member, I-Hybrid Model to Detect Zero Quantized DCT Coefficients in H.264 Hanli Wang, Student Member, IEEE, and Sam Kwong, Senior Member, IEEE
Date : 2025-12-22 Size : 435kb User : nagarjuna

DL : 0
第2章 信号变换 67 2.1 Z变换及MATLAB实现 67 2.1.1 Z变换的定义 68 2.1.2 Z变换的收敛域 68 2.1.3 Z逆变换 70 2.1.4 Z变换的性质 72 2.1.5 Z变换的工程应用 74 2.2 Chirp Z变换及MATLAB实现 77 2.2.1 Chirp Z变换的定义 77 2.2.2 Chirp Z变换的计算方法 79 2.2.3 Chirp Z变换的MATLAB实现 80 2.3 离散傅里叶变换及MATLAB实现 82 2.3.1 离散傅里叶变换定义 82 2.3.2 离散傅里叶变换的MATLAB实现 84 2.3.3 离散傅里叶变换性质 86 2.3.4 离散傅里叶变换的FFT算法 95 2.3.5 离散傅里叶变换FFT算法的应用 98 2.4 DCT变换及MATLAB实现 99 2.4.1 DCT变换的定义 100 2.4.2 DCT变换的MATLAB实现 101 2.5 Hilbert变换及MATLAB实现 103 2.5.1 Hilbert变换的定义 103 2.5.2 Hilbert变换的MATLAB实现 104 2.5.3 Hilbert变换的性质 105-Chapter 2, the signal transform 67 2.1 Z transform, and MATLAB to achieve 67 2.1.1 Z transform definition 68 2.1.2 Z transform domain of convergence 68 2.1.3 Z inverse transform 70 2.1.4 Z transform the nature of the 72 2.1.5 Z 74 Transform Application 2.2 Chirp Z transform, and MATLAB to achieve 77 2.2.1 Chirp Z transform definition 77 2.2.2 Chirp Z transform method 79 2.2.3 Chirp Z Transform MATLAB to achieve 80 2.3 Discrete Fourier Transform and MATLAB to achieve 82 82 2.3.1 Definition of Discrete Fourier Transform 2.3.2 MATLAB Implementation of Discrete Fourier Transform 84 2.3.3 Discrete Fourier transform 86 2.3.4 Discrete Fourier Transform FFT algorithm 95 2.3.5 Discrete Fourier Transform FFT algorithms in the 98 2.4 DCT transform, and MATLAB to achieve 99 2.4.1 DCT transform definition 100 2.4.2 DCT Transform MATLAB Implementation 101 2.5 Hilbert Transform and MATLAB Implementation 103 2.5.1 Hilbert transform definition 103 2.5.2 Hilbert Transform MATLAB Im
Date : 2025-12-22 Size : 7kb User : Lily

OFDM is a new scheme for data transmission with several advantageous features. In this report a survey of all existing OFDM systems are being presented. Starting with simple FFT based OFDM the other variants like DCT-OFDM, Interspersed OFDM and DWT based OFDM are studied.-OFDM is a new scheme for data transmission with several advantageous features. In this report a survey of all existing OFDM systems are being presented. Starting with simple FFT based OFDM the other variants like DCT-OFDM, Interspersed OFDM and DWT based OFDM are studied.
Date : 2025-12-22 Size : 365kb User : satish

On improved DCT based Channel Estimation with very low complexity for MIMO-OFDM systems
Date : 2025-12-22 Size : 155kb User : LAMMARI

里面是JPEG的标准变换过程,含有DCT变换,哈弗曼编码-Inside the JPEG standard transform, DCT, Hafu Man coding, run length encoding
Date : 2025-12-22 Size : 129kb User : wudi

DCTimagefusion_demo , dct
Date : 2025-12-22 Size : 156kb User : bavar

DFT, FFT,DST, DCT and many
Date : 2025-12-22 Size : 264kb User : maja

DCT of autoregressive model *Fesih-DCT of autoregressive model *Fesih
Date : 2025-12-22 Size : 1kb User : f33744_k

分块DCT变换,基于压缩感知信号的压缩。详细阐述了信号基于DCT分块的变换算法。为后面的信号压缩和恢复做铺垫。-Block DCT transform based on compressed sensing signal compression. Elaborates the signal based on the sub-block of DCT transform algorithm . For the following signal compression and pave the way for recovery .
Date : 2025-12-22 Size : 441kb User : lili

this file contain code for dct
Date : 2025-12-22 Size : 633kb User : sharmila banu

DL : 0
this code compress .wave file with DCT(disceret cosine transform) algorithm
Date : 2025-12-22 Size : 38kb User : mahdi

DL : 0
Optimum DCT-Based Multicarrier Transceivers for Frequency-Selective Channels
Date : 2025-12-22 Size : 510kb User : samm
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