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。
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。
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查找表的全数字反离散余弦变换(IDCT)电路的算法原理及其并行架构的大规模集成电路实现。
Based on the analysis of the rotation of cosine drum cam, this paper introduces a special de- vice to mill this type of cam on the ordinary horizontal milling machine.
通过对余弦鼓形凸轮运动特征的分析，介绍了在普通卧式铣床上利用分度头和回转工作台拼装的铣余弦鼓形凸轮形面的工装，实践证明，可保证较好的加工质量。
Based on the generalized sine and cosine functions in the triangular domain, the discrete generalized sine and cosine transform are defined.
在三角区域的广义正弦函数和广义余弦函数基础上，定义了三角区域的离散广义正弦变换和离散广义余弦变换。
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的仿真精度和速度，提出了基于快速DCT的线性定常系统高精度仿真算法。
Based on the equivalent theory of statics this paper presents an accurate numerical method and accurate numerical formulas for calculating the bearing load distributed by cosine curve law are derived.
本文根据静力学完全等效原理提出一种精确数值解法，并对余弦分布的轴承负荷转为节点力的解法作了具体的数学推导，得出了精确数值计算公式。
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)增强和改进谱熵的语音端点检测方法。
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全相位逆离散余弦变换(APIDCT)内插滤波器的重采样分层编码技术。
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。
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。
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 matched filtering method based on discrete cosine transform can improve accuracy and reliability of dividing gravitational and magnetic anomaly.
本文提出的基于离散余弦变换的匹配滤波方法，可以提高重磁异常划分的精确性和可靠性。
A method of magnetic potential spectrum based on the cosine transform is proposed in order to improve the calculating accuracy of magnetic anomaly derivatives.
针对提高磁异常导数的计算精度，提出磁位离散余弦变换谱的分析方法。
A finite point matrix method based on the cosine splines is presented by utilizing the conception of the nodal influence domain in this paper.
应用节点影响域的概念，提出了基于余弦样条函数的有限点阵方法。
The coordinate transformation matrix based on the direction cosine parameters from the object coordinate system to the world coordinate system is derived by vector algebra.
利用矢量代数的方法，推导出以方向余弦为参量的物坐标系到世界坐标系的坐标变换矩阵；利用矩阵求逆的方法，推导出世界坐标系到物坐标系的坐标变换矩阵。
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。
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。
A steganalysis algorithm based on statistical characteristics of DCT (Discrete Cosine Transform) coefficients for JPEG (Joint Photographic Experts Group) image was proposed.
提出了一种基于DCT(离散余弦变换)系数统计特性的JPEG图像隐写分析算法。
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.
目前在PACS系统中较多采用的是JPEG图像压缩标准，该标准采用以离散余弦变换算法为主的区块编码方式，但有一定的局限性。
The ac coefficients of an image's Discrete Cosine Transform (DCT) are best approximated by Laplacian distribution model. Based on this model, the blind information hiding algorithm was proposed.
基于图像离散余弦变换(DCT)交流系数的拉普拉斯分布模型，提出了一种盲提取数字图像信息隐藏算法。
Based on the Discrete Cosine Transform (DCT) coefficient histogram difference sequences of JPEG images, a new steganalytic method was proposed to realize the steganalysis of JPEG MB2.
基于JPEG图像的离散余弦变换（DCT）系数直方图差值序列，提出一种新的检测JPEGMB2隐写术的方法。
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，用基于离散余弦变换和基于离散小波变换的压缩算法，对实用型模块化成像光谱仪多光谱图像进行压缩。
This paper addresses the digital image watermarking techniques based on discrete cosine transform (DCT).
本文主要研究了DCT域的数字水印算法在静止图像中的应用问题。
This paper introduced a local cosine-basis based dictionary, it segments the time frame and ADAPTS speech signal's changes of the time-frequency structure.
构造局部余弦基字典，其对时间轴的分割适应于语音信号时频结构的变化，而且有较高的时频分辨率。
A method by using 8031 single-clip microprocessor to get the syntonical bit information is presented, based on the characteristic of the modulated singal in ascending cosine envelope.
利用升余弦包络调制信号的特点，即基带信号为升余弦波，接收端可以利用这一包络，从中提取定时信息。
Based on the grid multi-scroll Chua's chaotic attractors and Discrete Cosine Transform (DCT) algorithm, a novel digital image watermark algorithm is proposed in this paper.
基于网格状多涡卷蔡氏混沌系统和离散余弦变换(DCT)理论，提出一种改进的数字水印算法。
Based on the grid multi-scroll Chua's chaotic attractors and Discrete Cosine Transform (DCT) algorithm, a novel digital image watermark algorithm is proposed in this paper.
基于网格状多涡卷蔡氏混沌系统和离散余弦变换(DCT)理论，提出一种改进的数字水印算法。
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