Compared with DCT-based system, DWT-base watermark system is an adaptive system.
相比较DCT系统，DWT水印系统可以实现水印的自适应嵌入。
Block-DCT-based video compression scheme has been used widely in digital video system.
基于分块dct的视频压缩方法在数字视频系统中得到了广泛的应用。
The loop filter is run after decoding or encoding a frame and serves to perform extra processing on a frame, usually to remove blockiness in DCT-based video formats.
回放过滤器在解码或编码一个帧后运行，在帧上执行一些额外的处理，在基于DCT的格式中通常是消除区块效应。
The DCT based error concealment algorithm can be used for image reconstruction on client and concealment error caused by storage system or transmission channel.
基于DCT的错误隐藏算法可用于客户端近似重建图象，隐藏存储系统或传输信道带来的错误。
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。
A reduced number of DCT coefficients is computed in a subsequent inverse DCT computation based on the DCT block type.
而根据此离散馀弦转换区块形式则在后续的反向离散馀弦转换运算中运用较少个数之离散馀弦转换系数来做计算。
In this paper, a block based adaptive watermarking technique in DCT domain that is similar to the public key system is proposed in light of the cryptography technique and image processing technique.
结合加密技术与图像处理算法，提出了一种类似于公开密钥体制的基于分块dct变换的数字图像自适应水印算法。
In this paper, the fundamental reasons of blocking artifacts are explored, based on which an effective quantization method for DCT coefficients for reducing blocking artifacts is proposed.
分析产生方块效应的根本原因，在此基础上提出一种有效降低方块效应的DCT系数量化方法。
A new choice approach for embeddable position of audio watermarking scheme in the DCT domain based on research of IDCT maximum error modal is proposed.
本文在DCT最大误差模型研究的基础上提出了一种新的音频水印嵌入位置选择策略。
Based on this, the paper proposes a double watermarking algorithm based on DCT domain that the coexistence of robust and fragile digital watermarking can be achieved.
基于这个不变的数字特征，本文提出了种基于图像DCT域的鲁棒性水印和脆弱性水印共存的双水印算法。
An improved perceptually adaptive watermarking algorithm based on DCT is proposed in this paper.
该文基于DCT的自适应水印技术，提出了一种改进的水印算法。
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。
According to the theory of the algorithm, the noise elimination algorithm based on noise model can also be extended to the other compression algorithms such as DCT, DPCM, JPEG, SPIHT and MPEG.
从算法的理论基础来看，其中基于噪声模型的噪声清除算法对其他编码算法(如dct、DPCM、JPEG、SPIHT、MPEG等等)同样具有推广意义。
A novel meaning binary image digital watermarking algorithm based on DWT and DCT is proposed.
提出一种基于DWT和DCT域的有意义二值图像数字水印算法；
Then an adaptive image watermarking algorithm based on DCT is proposed to solve these problems.
继而设计并实现了一个较完整的基于DCT域的自适应图像隐形水印算法。
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。
So a hybrid video watermarking scheme based on motion vectors and DCT coefficients is proposed.
提出了一种基于运动矢量域与DCT域的混合视频水印方案。
In this dissertation, a new face representation algorithm based on weighted DCT fusing global facial feature and local facial feature is proposed.
本文基于DCT变换，给出了一种融合人脸整体特征和局部特征的加权DCT人脸表征算法。
A new adaptive recursive algorithm for eigenvector estimation based on the relations between KLT and sliding DCT was presented.
基于KLT与滑动dct的相似关系，提出了一种新的特征向量自适应递推估计算法。
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。
This paper proposes a adaptive region coding method, which is based on distributing characters of DCT coefficients.
提出了一种基于DCT系数分布特征的自适应区域编码方法。
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。
This paper proposes a new algorithm of video watermarking based on kurtosis and DCT.
提出一种基于峰度的视频水印新算法。
Then, two new embedding technologies about gray digital watermarking are suggested, based on DWT and DCT separately. The author implements them and analyzes their results and performances.
随后提出了两种分别基于DWT和DCT变换的嵌入灰度图水印的新方法，加以实现并对实验结果和算法性能进行初步分析讨论。
Two blind watermark algorithms based on HVS in DCT domain are proposed.
提出了DCT变换域上基于人类视觉特性（HVS）的两种盲水印添加方法。
Firstly, an adaptive segmentation DCT coding method based on edge information measure is developed.
首先提出了基于边缘信息测度的四叉树自适应分块的DCT压缩算法。
In this article a meaningful public watermark algorithm based on DCT was realized. An idea of controlling the position embedded by the random series was inducted which improved the algorithm.
文中实现了一种有意义的基于DCT的公开水印算法，并引入随机序列控制嵌入位置间隔的思想对算法进行了改进。
Two kinds of digital watermark methods about image based on DCT and DWT in frequency domain were mainly researched in this article.
本文主要研究了变换域中基于DCT和DWT的两种图像数字水印方法。
Two kinds of digital watermark methods about image based on DCT and DWT in frequency domain were mainly researched in this article.
本文主要研究了变换域中基于DCT和DWT的两种图像数字水印方法。
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