Video Quality Control based on MOS and a Bit Rate Reduction by Buffering

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  • MIYAKAWA Daigoro
    Dept. of Information Science, Faculty of Engineering, University of Fukui
  • TANAKA Shinichi
    Dept. of Information Science, Faculty of Engineering, University of Fukui
  • YOSHIDA Toshiyuki
    Dept. of Information Science, Faculty of Engineering, University of Fukui
  • TSUKUBA Takeshi
    Advanced Image Research Laboratories, Corporate Research and Development Group SHARP Corporation
  • NOMURA Toshio
    Advanced Image Research Laboratories, Corporate Research and Development Group SHARP Corporation

Bibliographic Information

Other Title
  • MOSに基づく動画像の画質制御とバッファリングによるビットレート削減について(マルチメディア情報入力及び処理方式および一般)
  • MOSに基づく動画像の画質制御とバッファリングによるビットレート削減について
  • MOS ニ モトズク ドウガゾウ ノ ガシツ セイギョ ト バッファリング ニ ヨル ビット レート サクゲン ニ ツイテ

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Description

To realize the optimal video quality in a restricted transmission bandwidth, the authors have proposed a video coding technique based on MOS, in which the estimated MOS of the target video is maximized by controlling the number of frames per second and the average number of bits per frame within a constant bit rate. An application of the technique under a constant bit rate, however, results in fluctuations of video quality over scenes. This paper thus tries to improve lower-quality parts in a target video to stabilize the overall video quality by introducing a frame prescanning and buffering. A subjective quality assessment test has confirmed that the proposed technique actually improves the video quality.

Journal

  • ITE Technical Report

    ITE Technical Report 32.26 (0), 29-32, 2008

    The Institute of Image Information and Television Engineers

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