Global brightness-variation compensation for video coding

Kazuto Kamikura*, Hiroshi Watanabe, Hirohisa Jozawa, Hiroshi Kotera, Susumu Ichinose

*この研究の対応する著者

研究成果: Article査読

54 被引用数 (Scopus)

抄録

In this paper, a global brightness-variation compensation (GBC) scheme is proposed to improve the coding efficiency for video scenes that contain global brightness variations caused by fade in/out, camera-iris adjustment, flicker, illumination change, and so on. In this scheme, a set of two brightness-variation parameters, which represent multiplier and offset components of the brightness variation in the whole frame, is estimated. The brightness variation is then compensated using the parameters. We also propose a method to apply the GBC scheme to component signals for video coding. Furthermore, a block-by-block ON/OFF control method for GBC is introduced to improve coding performance even for scenes including local variations in brightness caused by camera flashes, spotlights, and the like. Simulation results show that the proposed GBC scheme with the ON/OFF control method improves the peak signal-to-noise ratio (PSNR) by 2-4 dB when the coded scenes contain brightness variations.

本文言語English
ページ(範囲)988-1000
ページ数13
ジャーナルIEEE Transactions on Circuits and Systems for Video Technology
8
8
DOI
出版ステータスPublished - 1998 12 1
外部発表はい

ASJC Scopus subject areas

  • メディア記述
  • 電子工学および電気工学

フィンガープリント

「Global brightness-variation compensation for video coding」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル