基于自适应运动补偿的高清电视频域下变频

Computer analysis of images and patterns : proceedings of the ... International Conference on Automatic Image Processing. International Conference on Automatic Image Processing Pub Date : 1997-10-26 DOI:10.1109/ICIP.1997.648074

A. Vetro, Huifang Sun, J. Bao, T. Poon

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引用次数: 10

摘要

本文研究了将输入的高清电视信号下变频为适合在NTSC监视器上显示的信号的可能方法。我们提出了一种新的频率合成算法，该算法从四个原始的8/spl倍/8 DCT块中构造一组8/spl倍/8 DCT系数。此外，还提出了一种采用独特的自适应运动补偿算法的下变频解码器。利用该固定运动补偿算法，将所提出的下变频技术与传统方法进行了比较。两者都产生可接受的图像序列，在复杂性和质量上有不同的权衡。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Frequency domain down-conversion of HDTV using adaptive motion compensation

The paper investigates the possible means of down converting an incoming HDTV signal into one which is suitable for display onto an NTSC monitor. We present a novel frequency synthesis algorithm which constructs a set of 8/spl times/8 DCT coefficients from four original 8/spl times/8 DCT blocks. Also, a down-conversion decoder employing a unique adaptive motion compensation algorithm is presented. Using this fixed motion compensation algorithm, the proposed down-conversion technique is compared to the conventional method. Both yield acceptable image sequences with different trade-offs in complexity and quality.

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Computer analysis of images and patterns : proceedings of the ... International Conference on Automatic Image Processing. International Conference on Automatic Image Processing

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