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http://dx.doi.org/10.5909/JBE.2010.15.6.853

A New Method for Thumbnail Extraction in H.264/AVC Bitstreams  

Hong, Seung-Hwan (VIA-Multimedia Center)
Kim, Ji-Eon (VIA-Multimedia Center)
Chin, Young-Min (Central R&D Lab., KT)
Kwon, Jae-Cheol (Central R&D Lab., KT)
Oh, Seoung-Jun (VIA-Multimedia Center)
Publication Information
Journal of Broadcast Engineering / v.15, no.6, 2010 , pp. 853-867 More about this Journal
Abstract
Recently, thumbnail techniques are required to index a high-performance video at digital convergence-based multimedia service like IPTV and DMB. Therefore a thumbnail extraction method in H.264/AVC bitstreams has been proposed. However, thumbnail quality deterioration problem at converting the general equation of spatial domain to frequency domain which is generated by not considering about H.264/AVC transform and quantization processing and rounding-off operation in intra prediction. In this paper, we propose a new thumbnail extraction method in H.264/AVC bitstreams. The proposed scheme is based on H.264/AVC core-transform for a thumbnail extraction in frequency domain, and probability theory, intra rounding-off error compensation. Through the implementation and performance evaluation, the subjective quality difference between the output of our scheme and the output of reference decoder is negligible and better than the conventional method, and moreover PSNR gain by up to 8.66 dB.
Keywords
Thumbnail; frequency domain; H.264/AVC core-transform; rounding-off;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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