Then we made some more deep research on the intra-prediction and integer DCT transform technologies of the H. 264 standard.
264标准的帧内预测和DCT整数变换技术进行了较深入地探讨。
Absrtact: for its fine performance, DCT transform is widely used in the compression and coding method of image and video data.
摘要：DCT变换以其优良特性被图像和视频的数据压缩编码所广泛采用。
Combined with FSVQ algorithm, the traditional DCT transform and integer DCT transform are used to improve the performance of image compression.
对经典DCT变换和整数DCT变换进行研究，并把它们和有限状态矢量量化编码算法相结合，提高了对图像的压缩性能。
This method compares the few low frequency DCT transform coefficients of the range blocks and domain blocks to find out the matched domain block.
通过图像块与相似块在DCT变换域少数低频系数的比较，来确定匹配的相似块。
It embeds the watermark bits on the DC of the DCT transform coefficients, for most JPEG quality factor, the method is proved to be robust and effective.
通过对图像做仿jpeg流程的处理，在DCT变换的直流系数上嵌入水印，对于各种常用的JPEG压缩量化因子，可以得到良好的水印嵌入效果。
Many results show a fact that, compared with traditional DCT transform, wavelet transform has a great advantage, and it will surely be broadly used in video compression.
文中的大量实验结果表明，小波变换同传统的DCT变换相比较有很大的优越性，在视频压缩中也必将取得更广泛的应用。
The main idea lies in decomposing the difference frame of prediction in a redundant dictionary with much more basis functions, giving up traditional lattice DCT transform.
基本思想是对于预测 误差图像信号的分解，不再采用传统的晶格DCT变换，而是选择采用一个拥有更多基函数的冗 余字典集合。
The image damage by transform coefficients quantization in ID-DCT transform compression coding is analysed on frequency domain and space domain. Some useful results are obtained.
本文对一维DCT变换压缩编码中变换域系数二次量化引起的图象损伤进行了频域和空间域分析，得出了一些有用的结论。
Most current video compression standards employ DCT transform and motion compensation, which approximately consumes 10% of encoding time, while motion estimation consumes about 60%.
目前的视频压缩标准多数采用DCT变换编码和运动补偿 技术， 运动估计约占整个编码时间的60%、 运动补偿约占10%。
Lifting matrixes is the base of integers transforms, so structuring lifting matrixes is the emphasis in FFT and DCT integers transform.
整数到整数变换的基础是提升矩阵，所以fft、DCT整数变换的重点就是构造提升矩阵。
The system uses CCD for getting digital image, uses a 16 bit fix-point DSP to perform fast discret cosine transform(DCT) arithmetic and image encoding and realizes a fast image compression in end.
系统使用CCD获取原始数字图像数据，采用快速算法实现了核心的二维DCT变换，经过编码后，在一个16位定点DSP上实现了快速图像压缩。
Data correlation coefficients were calculated and switch regions were analyzed by using two dimension discrete cosine transform (DCT) in ray-space data compression.
在光线空间的数据压缩中，计算了数据的相关系数，采用二维离散余弦变换(DCT)进行了变换域分析。
A new method for predetermination of all-zero blocks in low rate video coding is proposed, which is based on characters of discrete cosine transform (DCT) and quantization.
该文根据离散余弦变换(DCT)和量化运算的特点，提出了一种新的用于低比特率视频编码的全零块预先判别方法。
The DCT was used as the main method of image transform coding for a long time.
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。
A watermarking scheme based on the discrete cosine transform (DCT) was studied. A new blind watermarking algorithm by embedding the watermark into the phase components of DCT was proposed.
基于离散余弦变换(DCT)方法对水印算法进行了研究，提出一种新的将水印嵌入到分块dct相位成分的盲水印算法。
It is a new method that calculate vertical second derivative of gravity anomalies based on discrete cosine transform (DCT).
基于离散余弦变换(DCT)的重力异常垂向二阶导数的计算方法是笔者提出的新方法。
Variable characteristics were captured in discrete cosine transform (DCT) domain of JPEG images and from their decompressed versions with these functions.
这些函数从JPEG图像离散余弦变换(DCT)域及其解压图像所在空域中提取易变特征。
There are two main transform domain methods, one is to use the discrete cosine transformation (DCT); the other would be the use of discrete wavelet transforms (DWT).
目前主要有两种变换域方法，一种是使用离散余弦变换(DCT)，另一种是使用离散小波变换(DWT)。
The discrete cosine transform (DCT) is an important mathematical tool in digital image processing and many other fields.
离散余弦变换(DCT)是数字图像处理等许多领域的重要数学工具。
This paper proposes a robust watermarking algorithm for volume data based on three-dimension discrete cosine transform(3D-DCT) and spread-spectrum communication technique.
本文基于三维离散余弦变换（3D-DCT）技术和扩频通信技术提出三维体数据鲁棒水印嵌入算法。
A novel discrete cosine transform (DCT) based automated phase measurement method is proposed and verified by a simulation and experiments.
本文提出一种以离散余弦变换(DCT)为基础的自动相位测量方法并以实验和模拟运算进行验证。
The paper gived a novel 2 DCT/IDCT error module which support transform matrix architecture.
提出一种新的基于行列变换结构的2- DCT/IDCT误差模型。
This paper introduces how to use DCT (discrete-cosine transform) in data-hiding technology in image, and its fundamental theory and algorithms, special improvements of existing algorithms.
该文主要介绍了如何利用离散余弦变换(DCT)实现对于图象文件的数据隐藏技术，详细说明了该技术的基本原理和实现方法，以及对现有算法的改进。
In this paper, a new fast algorithm to calculate discrete cosine transform (DCT) with arbitrary length by means of the butterfly structure is presented.
本文提出离散余弦变换(DCT)的一种新的快速算法，其特点是变换长度任意，而且采用蝶形结构。
The improved AFT algorithms for even and odd functions can also be used for computing discrete cosine transform (DCT) and discrete sine transform (DST), respectively.
本文改进的偶函数和奇函数的AFT算法还分别可以用来计算离散余弦变换(DCT)和离散正弦变换(DST)。
The fast algorithm based on discrete cosine transform (DCT) and its complexity are obtained and the selection of the best basis is discussed.
给出了用离散余弦变换(DCT)实现的快速算法及复杂度，并考查了最优基的选取。
This transform algorithm saves the operation time due to without quantization. It can get the same compressed result and even better performance in the case of low bit rate compared with DCT.
通过与传统的离散余弦变换（DCT）进行比较，表明了APIDCBT算法可以不用量化表，节省运算时间，与DCT可达到同样的压缩效果，并且在低码率情况下优于DCT。
Discrete cosine transform (DCT) is an effective method to signal enhancement.
离散余弦变换是声信号增强的有效方法。
We firstly overview the properties of fractal coding in image domain, then we derive the corresponding formula of scaling factor and offset of affine transform in DCT domain.
首先，综述了图像域中分形编码的特性，然后导出在离散余弦变换(简称DCT)域中仿射变换的伸缩因子和偏移量的对应公式。
We firstly overview the properties of fractal coding in image domain, then we derive the corresponding formula of scaling factor and offset of affine transform in DCT domain.
首先，综述了图像域中分形编码的特性，然后导出在离散余弦变换(简称DCT)域中仿射变换的伸缩因子和偏移量的对应公式。
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