discrete cosine transform是什么意思，discrete cosine transform的意思翻译、用法、同义词、例句

[数] 离散余弦变换

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。

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。

It is a new idea of color image coding algorithm that considers R, G, B frames of a color image as a whole and makes use of three-dimensional discrete cosine transform(3D-DCT) to compress.

将彩色图像的R、G、B三帧作为整体考虑，并利用三维离散余弦变换（3D-DCT）进行压缩编码是彩色图像编码的新方法。

The discrete cosine transform is a classical image processing technique, and the discriminant analysis is a commonly used image feature extraction technique.

离散余玄变换是一种经典的图像处理技术，而鉴别分析是一种常用的图像特征提取技术。

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的流执行模型，描述图形处理器流处理机制的执行过程，在图形处理器上实现了二维离散余弦变换。

This control scheme proposes a visual quantization matrix to weight the discrete cosine transform (DCT) coefficients in order to reduce the coding distortion on the visual perceptibility.

该控制策略采用一个视觉量化矩阵对DCT系数进行加权处理，以减少DCT系数在视觉特性上的编码失真。

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。

Among kinds of video coding methods, discrete cosine transform (DCT) based on the block is the core of most international image coding standards.

在当前的视频编码国际标准中，大部分都使用了基于块的离散余弦变换（DCT变换）编码技术。

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

并采用了离散余弦转换（DCT）对其方差的波谱结构进行了讨论。

Most video compression coding standards, such as H. 264, MPEG-4 and AVS, are based on the block discrete cosine transform (BDCT) compression.

目前大部分视频压缩编码标准，如H.264、MPEG-4、AVS等，都是基于图像分块的离散余弦变换（BDCT）压缩编码的。

Based on continuous hyper-chaotic system and discrete Cosine transform, this paper presented a blind detection watermarking algorithm for gray image to hide information against print-scan process.

针对灰度图像的特点提出了一种基于连续超混沌系统和离散余弦变换（DCT）的盲检测水印算法。

A novel error concealment technique based on the discrete cosine transform(DCT) coefficients recovery is proposed.

提出一种新的基于DCT系数恢复的错误隐藏技术。

A digital image watermark algorithm in DCT(Discrete Cosine Transform) domain with chaotic encryption was presented.

提出了一种基于混沌加密的DCT域数字图像水印算法。

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。

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。

In this paper, A three dimensional discrete cosine transform(3D DCT) coder for still color images is presented, which can not only achieve high compression ratio but also ensure good image quality.

为了既能获得较高的压缩比，又能保证较好的图象质量，提出了一种基于三维离散余弦变换（3DDCT）的静止彩色图象编码方法。

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） 。

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。

The block-Based Discrete Cosine Transform (BDCT) suffers from visible blocking artifacts between adjacent image blocks at low bit rates, which reduces the image visual quality.

块离散余弦变换在低比特率时其恢复图像的块边界上会出现明显可见的方块效应，从而降低了图像的视觉质量。

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和离散余弦变换的数字水印技术。

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

结果表明，离散余弦变换对近红外光谱具有较强的压缩能力。

Based on zerotrees of the discrete cosine transform(DCT) coefficients, a novel image steganographic algorithm is presented.

该文在研究图像离散余弦变换（DCT）系数零树的基础上，提出了一种新的图像隐写算法。

Inversed discrete cosine transform(IDCT)module is the most important part in a MPEG2 decoder chip .

MPEG2动态图像压缩解码电路中最关键的部分逆离散余弦变换（IDCT）模块是该研究领域的热点。