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• Step 2, forward discrete cosine transform is carried out to sampled data;

步骤2取样的数 据进行正向离散余弦转换

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• Discrete cosine transform (DCT) is an effective method to signal enhancement.

离散余弦变换信号增强有效方法

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• Inverse Discrete Cosine Transform takes the most of time in MPEG-4 video decoding.

离散余弦逆变MPEG - 4视频纹理解码运算时间开销最大部分。

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• Discrete cosine transform (DCT) is a hypo-optimal transform approach similar to KL transform.

DCT变换种与KL变换非常相似的次最优变换算法。

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• The motion compensated discrete cosine transform coding is an efficient video coding technique.

运动估计补偿方法实用视频编码方法。

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• The digital watermark technique is proposed based on Fresnel hologram and Discrete Cosine Transform.

提出了一种基于数字菲涅耳全息离散余弦变换数字水印技术

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• This paper addresses the digital image watermarking techniques based on discrete cosine transform (DCT).

本文主要研究了DCT数字水印算法静止图像中的应用问题。

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• The results indicate that the discrete cosine transform has a good compressibility to NIR spectra of tea.

结果表明离散余弦变换近红外光谱具有强的压缩能力

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• At low bit rates, the block Discrete Cosine Transform (BDCT) compression methods often give rise to blocking artifacts.

比特时，基于离散余弦变换(BDCT)的图像压缩方法常常引起块效应。

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• 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)数字图像处理许多领域重要数学工具

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• We have also studied the variance spectral configuration of the surface wind field using DCT (Discrete Cosine Transform).

采用离散余弦转换(DCT)对其方差波谱结构进行了讨论。

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• So the fast algorithms of discrete sine transform, the discrete cosine transform and the discrete W transform are unified.

这样离散余弦、离散正弦、离散w变换快速算法就有一个统一的格式。

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• 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)重力异常垂向阶导数计算方法笔者提出的方法

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• This method can preserve the main structure of image, smoothing noise and removing discrete cosine transform blocking effects.

方法在平滑噪声方块效应同时，保留图像主要结构特征。

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• This paper describes a FPGA design for two dimensional Discrete Cosine Transform (2d-dct) used in JPEG medical image compression.

本文介绍了一种适用于J PEG医学图象压缩dctF PG A设计方案。

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• This paper proposes a hierarchical coding technique based on the All Phase Inverse Discrete Cosine Transform (APIDCT) interpolation.

该文提出了一种基于相位离散余弦变换(APIDCT)内插滤波器的重采样分层编码技术

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• A novel discrete cosine transform (DCT) based automated phase measurement method is proposed and verified by a simulation and experiments.

本文提出以离散余弦变换(DCT)为基础自动相位测量方法实验模拟运算进行验证

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• The fast algorithm based on discrete cosine transform (DCT) and its complexity are obtained and the selection of the best basis is discussed.

给出了离散余弦变换(DCT)实现快速算法复杂度，并考查优基的选取

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• In the paper, a speech endpoint detection method based on DCT (Discrete Cosine Transform) enhancement and improved spectral entropy is proposed.

提出了基于DCT(离散余弦变换)增强改进语音端点检测方法

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• This paper abstracts a stream execution model of GPU, describes its stream execution process, and implements the discrete cosine transform on GPU.

该文抽象出图形处理器执行模型描述图形处理器流处理机制的执行过程图形处理器上实现了二维离散余弦变换

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• The matched filtering method based on discrete cosine transform can improve accuracy and reliability of dividing gravitational and magnetic anomaly.

本文提出基于离散余弦变换匹配滤波方法可以提高异常划分精确性可靠性

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• 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)一种新的快速算法，其特点变换长度任意，而且采用蝶形结构

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• 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JPEG图像离散余弦变换(DCT)及其解压图像所在空域提取易变特征

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• This paper presented an ROM look-up table (LUT) based inverse discrete cosine transform (IDCT) algorithm and its LSI implementation having parallel architecture.

介绍了采用基于ROM查找的全数字离散余弦变换(IDCT)电路的算法原理及其并行架构大规模集成电路实现

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• Combining the thought dimensioned above, with discrete cosine transform-based and DWT-based compression algorithms, the OMIS multi-spectral images are compressed.

结合这种压缩思想基于离散余弦变换基于离散小波变换的压缩算法实用型模块化成像光谱仪多光谱图像进行压缩。

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• Data correlation coefficients were calculated and switch regions were analyzed by using two dimension discrete cosine transform (DCT) in ray-space data compression.

光线空间的数据压缩中，计算了数据的相关系数采用离散余弦变换(DCT)进行变换分析。

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• 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).

目前主要两种变换方法使用离散余弦变换(DCT)，一种使用离散小波变换(DWT)。

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• 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.

本文改进的偶函数函数AFT算法分别可以用来计算离散余弦变换(DCT)和离散正弦变换(DST)。

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• The image compression standard in PACS now is the JPEG standard based on the DCT (Discrete Cosine Transform) algorithm, which can only be applied in the limited areas.

目前PACS系统中较多采用JPEG图像压缩标准标准采用离散余弦变换算法为主区块编码方式，有一定的局限性。

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• To improve the simulation precision and speed of LTI system, the highly precise simulation algorithm of LTI system based on Discrete Cosine Transform(DCT) is proposed.

为了提高线性定常系统仿真精度速度提出基于快速DCT线性定常系统高精度仿真算法

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