The block-based DCT compression methods often cause blocking artifacts due to low bit rates. A new algorithm is proposed which combines HVS and entropy analysis.
针对离散余弦变换基于块（DCT）图像压缩的方法通常因比特率低而导致块效应，结合人类视觉系统（HVS）和局部熵分析，提出一种新的去块效应算法。
For a given monochrome digital image with low detail, an adaptive DCT data compression method is given and compared with adaptive DPCM method.
对于给定的细节较少的单色数字图象，本文给出了一种自适应的离散余弦变换(DCT)数据压缩方法。
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。
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。
On the basis of the characteristics of MP3 compression and local audio correlation, a new adaptive digital audio watermarking in DWT and DCT domain for protecting MP3 music copyright is proposed.
以mp3压缩攻击特点与听觉掩蔽特性为基础，提出了一种可用于MP3音乐作品版权保护的混合域数字音频盲水印算法。
On the basis of the characteristics of MP3 compression and local audio correlation, a new adaptive digital audio watermarking based on DWT and DCT was proposed.
以mp3压缩等攻击特点及局部音频相关特性为基础，提出了一种新的混合域数字音频盲水印算法。
Due to high potential relativity of DCT coefficients and big compression performance of fractal, high compression rate of video data can be realized.
由于频域中dct系数的强相关性和分形的高压缩性能，能够实现视频数据的高压缩。
The Method based on the DCT transformation has been the center technology for most of the digital image and video coding standards, since it features on good de-correlation and energy compression.
基于分块dct变换的编码方法，由于具有良好的去相关性和能量压缩特性，已经成为现有大多数图像和视频编码标准的核心技术。
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。
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 basic coding method of JPEG is introduced succinctly in the article, which includes procedures from sampling to coding DCT, to quantification and finally to compression with Huffman coding method.
简要介绍了基本的JPEG的编码方法，即从采样到DCT编码再到量化及最后用霍夫曼编码压缩这一过程。
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。
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。
DCT is an orthogonal transformation widely used in image compression applications.
DCT是一种被广泛应用于图像压缩编码中的正交变换。
The theoretical and experimental results show that the proposed algorithm can achieve higher compression efficiency than DCT and the W transform based method in very low bit rate communication.
理论和实验表明，在超低比特率图象通信应用领域，该算法图象压缩效率高，图象恢复效果好。
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。
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。
DCT and RLE will be combined to achieve the lossy compression of color images, and can be accepted within the framework of the loss of access relatively good compression ratio.
将DCT和RLE相结合能够实现彩色图像的有损压缩，并且能够在可以接受的损失范围内，获取比较好的压缩比。
Our algorithm incorporates the CS theory into the traditional DCT based coding method to achieve better compression efficiency.
第二，提出了一种利用压缩采样理论的多描述编码算法。
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%。
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。
In this article, a new ECG compression method applying 2-step vector quantization (VQ) on DCT coefficients of ECG data was introduced.
本研究提出了一种新的心电信号压缩方法，该方法对心电数据进行离散余弦变换(DCT)并对DCT变换的结果进行二级矢量量化。
The result shows that this method not only overcomes DCT shortcomings of square-piece effect in image compression, but also has more compression effect than the hierarchical threshold method.
结果是，适度分层阈值法有效克服了DCT在图像压缩中存在的“方块效应”，并且比分层阈值法对图像进行压缩更能达到较好的压缩效果。
The highlight contents as follows: 1 Theories and methods of image compression, especially widely used DCT and international image compression standard-JPEG based on DCT are investigated.
研究了图像压缩编码的原理和方法，重点讨论和仿真了目前被广泛应用的DCT变换以及基于DCT变换的国际图像压缩编码标准JPEG。
The result shows that this method not only overcomes DCT shortcomings of square-piece effect in image compression, but also has more compression effect than the hierarchical threshold metho…
结果是，适度分层阈值法有效克服了DCT在图像压缩中存在的“方块效应”，并且比分层阈值法对图像进行压缩更能达到较好的压缩效果。
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医学图象压缩的二维dct的F PG A设计方案。
An FPGA design to 2 dimensions DCT in MPEG4 video compression system is presented. The advantage of this design is: real-time, high accuracy, and adaptive to FPGA implementation.
本文提出了一种适用于MPEG4视频编码系统的二维dct的FPGA设计方案，该方案具有实时、高精度、易于fpga实现的特点。
An FPGA design to 2 dimensions DCT in MPEG4 video compression system is presented. The advantage of this design is: real-time, high accuracy, and adaptive to FPGA implementation.
本文提出了一种适用于MPEG4视频编码系统的二维dct的FPGA设计方案，该方案具有实时、高精度、易于fpga实现的特点。
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