离散余弦变换

基于小波包变换和离散余弦变换的复合数字水印技术研究

An Investigation of Digital Watermarking Technique Based on the Combination of WPT and DCT

提出了一种基于离散余弦变换和独立分量分析相结合的抗几何攻击水印算法。

An algorithm based on DCT and ICA is proposed , which can resist geometric attacks effectively .

基于MATLAB的离散余弦变换与应用

The Discrete Cosine Transform and Application Based on MATLAB

离散余弦变换结合BP网络用于白酒近红外光谱定量分析

Near Infrared Light Quantitative Spectrometric Analysis of Liquor by BP Neural Network and DCT

二维离散余弦变换与二维离散Fourier变换的快速算法

Fast Algorithm for Two-dimensional Discrete Cosine Transform and Two-dimensional Discrete Fourier Transform

二维离散余弦变换的VLSI实现及IP软核设计

The VLSI Implementation of 2-D DCT and Its Soft Core Design

离散余弦变换（DCT）编码在地震勘探数据压缩中的应用

The application of discrete cosine transform coding to seismic data compression

高速离散余弦变换VLSI实现的可测性设计

Design for Testability of a Novel High-Speed DCT in VLSI

给出一种新的基于矩阵分解的离散余弦变换（DCT）快速算法。

A new discrete cosine transform algorithm based on matrices decomposing is presented .

提出一种新的基于局部离散余弦变换（Localdiscretecosinetransform，LDCT）的时频域干扰抑制方法。

A new interference suppression technique based on local discrete cosine transform ( LDCT ) is proposed .

本文首次在水印算法中采用了LOT以代替传统的离散余弦变换（DCT），从而有效地避免了DCT的块效应。

LOT is first adopted in the watermarking algorithm instead of DCT , which greatly reduces the blocking effects .

小波变换（WT）可获得高的压缩率，而离散余弦变换（DCT）可使能量更加集中。

WT can obtain high compression rate , and DCT can concentrate the energy .

其中离散余弦变换（DCT）具有实现简单的优点且和小波变换有相似之处。

Discrete Cosine Transform ( DCT ) works simple and is similar to wavelet transform .

DCT（DiscreteCosineTransform离散余弦变换）是目前应用最为广泛的多媒体数据压缩技术之一。

The Discrete Cosine Transform ( DCT ) is one of the most widely used digital compression techniques for multimedia .

张正炳，朱光喜，朱耀庭.基于DCT的超声电视测井图象压缩编码.测井技术，1998，22（2）：87～90介绍了基于离散余弦变换（DCT）的JPEG图象压缩方法。

Introduces the JPEG image compression method based on DCT ( Discrete Cosine Transform ) .

基于MPEG-2视频可变长解码、反量化、反离散余弦变换的FPGA实现

Implementation of Variable Length Decoder 、 Inverse Quantization and Inverse Discrete Cosine Transform in MPEG-2 with FPGA

高光谱遥感图像特征提取及分类研究&基于离散余弦变换（DCT）及支撑向量机技术

Picking up Character and Classification of the Hyper-spectral Remote Sensing Image Based on DCT and SVM

在此基础上，利用离散余弦变换的特性，提出了一种基于DCT变换的迭代信道估计算法。

In the flowing , an iterative channel estimation method using discrete cosine transform is proposed .

图像压缩编码长期以来利用离散余弦变换（DCT）作为变换编码的主要技术。

The DCT was used as the main method of image transform coding for a long time .

提出一种基于离散余弦变换（DCT）的自适应水印技术。

The proposed method is an adaptive watermarking technology based on Discrete Cosine Transformation ( DCT ) .

本文将二维离散余弦变换（DCT）应用于多光谱图像与全色光学图像融合问题的研究中。

This paper applies 2-D DCT to the remote sensing image fusion between panchromatic and multi-spectral images .

此方法应用小波变换和离散余弦变换对归一化后的人耳区域进行特征提取，使用BP网络对提取特征进行分类识别。

The method extracts the features in the ear area through wavelets and discrete cosine transform , and classifies those features with BP neural network .

基于离散余弦变换的MMSE信道估计算法

An Algorithm of MMSE Channel Estimation Based on DCT

基于离散余弦变换和Arnold变换的数字水印算法

Digital Watermarking Algorithm Based on DCT and Arnold Transform

该方法利用三维帧内预测技术结合三维离散余弦变换有效地去除彩色图像相邻像素间以及R、G、B三帧之间的相关性。

The method utilizes three-dimensional intra-prediction combined with 3 D-DCT to remove the correlations between adjacent pixels in an image and R , G , B frames efficiently .

本文利用离散余弦变换（DCT）研究图像的压缩技术。

An image compression technology based on discrete cosine transform ( DCT ) was studied in this paper .

提出一种高压缩比、高保真度的DCT（离散余弦变换）压缩ECG（心电图）数据的方法。

Method of ECG data compression via DCT was presented with high compression ratio ( CR ) and high fidelity .

H.263中全零离散余弦变换系数的预先判别

Early Detection Method of All-Zero Discrete Cosine Transform Coefficients in H.263

本文使用离散余弦变换（DCT）技术，在变换域内进行有源噪声控制的研究，同时考虑了变换域约束。

A transform-domain algorithm using DCT technique is presented in this paper , and the transform-domain constraint is considered .

二维离散余弦变换的FFT及FPT混合算法

FFT FPT hybrid algorithm for 2-D discrete cosine transform