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Quantization Method in Spatial Domain for Screen Content Video Compression  

Nam, Jung-Hak (Dept. of Computer Engineering, Kwangwoon University)
You, Jong-Hun (Dept. of Computer Engineering, Kwangwoon University)
Sim, Dong-Gyu (Dept. of Computer Engineering, Kwangwoon University)
Oh, Seoung-Jun (Dept. of Electronics and Communications Engineering, Kwangwoon University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.49, no.4, 2012 , pp. 67-76 More about this Journal
Abstract
Expanding services and productions for screen content videos recently, necessity of new compression techniques is emerging. The next-generation video coding standard is also considering specified coding tools for screen content videos, but it is still preliminary stage. In this paper, we investigate the characteristics of screen content videos for which we propose the quantization in spatial domain to improve coding efficiency. The proposed method directly employs quantization for residual signal without any transformations. The proposed method also applies adaptive coefficients prediction and in-loop filter for quantized residual signals in spatial domain based on the characteristics of screen content videos. As a results, the proposed method for the random access, the low-delay and the all-intra modes achieve bit-saving about 4.4%, 5.1%. and 4.9%, respectively.
Keywords
Screen content videos; HEVC; Quantization;
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Times Cited By KSCI : 1  (Citation Analysis)
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