子带编码是实现高清晰度电视频带压缩的一种方法。
The subband coding is an efficient method of image compression.
本文给出了一种考虑人类视觉特性的图像子带编码方法。
A subband coding method of images incorporating properties of Human Vision is presented in this paper.
本文提出了一种称为比特扩展子带编码(BESBC)的语音编码方法。
A speech coding method called bit expansion subband coding (BESBC) is presented in this paper.
文章介绍一种图像低频子带编码的矢量量化方法—非对称树结构矢量量化。
One of VQ image coding method used in the low frequency subband-the unbalanced tree-structured VQ is presented in this paper.
该方案基于小波变换的场内图像压缩技术，采用小波变换、子带编码、自适应量化和熵编码来对图像数据进行压缩；
The project is based on wavelet transform image compression, and implements wavelet transform, subband coding, The quantization and entropy encoding processes provide data compression;
其次，介绍了MP3音频压缩标准所使用的子带编码、心里声学模型、自适应窗口切换、哈夫曼编码、比特池等关键技术。
Secondly, introduces MP3 audio compress standard including subband filter bank, psychoacoustic model, adaptive window switch over, Huffman coding, bit reservior, etc.
提出了采用子带dct并结合一种区域分割技术对任意形状的VOP进行编码的方法。
Arbitrary shape VOP coding using subband DCT with a new region partitioning method is proposed.
针对图像小波系数在各子带内显著性分布的聚簇特征，提出了在SPIHT算法的输出环节引入游程编码。
After the clustering characteristics of image wavelet coefficients' significance distribution in each sub-band was analyzed, run-length coding (RLC) was introduced into SPIHT's output stage.
该方法基于率失真曲线的精确理论模型，对小波分解后的不同子带提供最优的动态比特分配从而实现了小波系数的自适应量化编码，最后还实现了码率控制。
It provides optimal dynamic bit allocation for sub-bands of DWT and realizes adaptive quantization for wavelet coefficients. At last, it provides exact rate control for the coder.
实验结果证明，在低码率下，使用子带dct对任意形状的VOP进行编码的方法优于传统的DCT方法和SA DCT方法。
Simulation results reveal that it can achieve better performance than conventional DCT coding scheme and SA DCT method in low bit rate coding.
首先确定初始阈值，并构造小波系数的关系矩阵，然后结合关系矩阵对高频子带系数进行逐次逼近量化编码。
Finally, the initial threshold is identified and relation matrix is constructed, and the wavelet coefficients of the high frequency subbands are encoded progressively by using relation matrix.
同时，在JPEG 2000中基于子带、码块和比特平面的编码都可以并行实现。 因此，MQ编码器的效率就成了JPEG 2000硬件高速实现需要解决的关键问题。
The MQ coder is adopted in JPEG2000. In EBCOT algorithm, the tiles, code-block, bit-plane all can be implemented using parallel structure.
由于LL子带占据变换系数的大部分能量，提出一种基于邻域系数的梯度的预测编码单独编码LL子带。
Predictive coding based on the grads of neighbor coefficient is proposed to encode LL subband because LL subband occupied a majority of energy of transform coefficient.
由于LL子带占据变换系数的大部分能量，提出一种基于邻域系数的梯度的预测编码单独编码LL子带。
Predictive coding based on the grads of neighbor coefficient is proposed to encode LL subband because LL subband occupied a majority of energy of transform coefficient.
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