Interactive partial video decoding for viewing resolution adaptation

Chen Liu*, Xin Jin, Tianruo Zhang, Satoshi Goto

*この研究の対応する著者

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

High-definition (HD) and super-high-definition (SHD) videos become more and more popular for various video applications, including video capture and playback on portable devices. Because of the resolution mismatch between HD/SHD video and the low resolution screen of portable devices, the video is fully decoded and then sown-sampled for the display, which causes a waste of both computational power and memory bandwidth. In this paper, a user-defined region of interest (ROI) oriented partial decoding scheme for H.264/AVC is proposed to achieve low-power and good subjective visual quality of decoding/display for viewing resolution adaptation. The proposed partial decoding scheme works basing on the adaptive ROI tracking. The motion-vector (MV) adaptation is adopted for maintaining the visual quality in ROI. The simulation results show that, the displayed partial decoded sequence provides better subjective visual quality, more details, and very small PSNR drop in ROI compare to original one. And the partial decoder achieves about 48.34% decoding time reduction averagely, which means lower computational complexity and power consumption. The proposal is especially useful for displaying HD video on the portable devices in which the battery life is a crucial factor.

本文言語English
ホスト出版物のタイトル2010 International SoC Design Conference, ISOCC 2010
ページ244-247
ページ数4
DOI
出版ステータスPublished - 2010
イベント2010 International SoC Design Conference, ISOCC 2010 - Incheon
継続期間: 2010 11月 222010 11月 23

Other

Other2010 International SoC Design Conference, ISOCC 2010
CityIncheon
Period10/11/2210/11/23

ASJC Scopus subject areas

  • ハードウェアとアーキテクチャ

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