HDTV信号的自适应亚取样压缩编码

Adaptive Sub—Sampling Compression Encoding of HDTV Signals

本文提出了一种280Mb/s码率的HDTV压缩编码方案。亮度分量采用1/4亚取样配合自适应细节补传,色度分量采用1/2亚取样及R-Y/B-Y行轮换传送。在解码端,亮、色分量均采用2D内插重建复原,本方案的特点是抗误码能力强、算法简单、易于实现。实验获得了优良的重建图像质量。

An HDTV compression encoding scheme with a bit rate of 280Mb/s is proposed in this paper. 1/4 sub-sampling with adaptive detail com- pensation is used for luminance component and 1/2 subsampling plus R-Y/B-Y line alternation is used for chrominance signal. 2D interpolation is used for both lu- minance and chrominance components at decoding end for reconstruction. This scheme features high immunity to bit error, simple algorithm and easy implementa- tion. Excellent quality of reconstructed pictures has been obtained experimentally.