情報量予測型適応可変フレームレート制御方式 : 超低ビットレート動画像符号化への応用を目的として  [in Japanese] A Method of Entropy Predictive Frame Rate Control : for Very Low Bit-rate Video Coding  [in Japanese]

Abstract

動画像符号化,特に64kbpsを下回る超低ビットレートにおいては,フレームレートの制御が,画像品質や動きの滑らかさといったいわば動画像符号化の要となる性能を支配している.本稿では,符号化に先立って,発生情報量をきめ細かく予測し,さらに動きベクトルの情報を用いることで,画像品質を一定に保ちながら発生情報量を最小限に抑え,かつ視覚的に自然な動きとなるようなフレームレート制御方式について検討する.また本手法を,背景分離型超低ビットレート動画像符号化方式に応用し,量子化器の最適化と合わせて,その有効性について述べる.

The control of frame rate contributes effectively overall codec performance represented by the picture quality and motion smoothness in very low bit-rate video particularly less than 64kbit/s. This paper describes the method of frame fate control using precise entropy estimation and motion vector information to keep the picture quality high and get subjectively natural motion. And the result of applying the suggested method to VLBR codec with background separation and advanced quantization control is shown.

Journal

IPSJ SIG Notes   [List of Volumes]

IPSJ SIG Notes 96(120), 27-34, 1996-12-06  [Table of Contents]

Information Processing Society of Japan (IPSJ)

References:  3

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Cited by:  4

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Codes

  • NII Article ID (NAID) :
    110002935889
  • NII NACSIS-CAT ID (NCID) :
    AN10438399
  • Text Lang :
    JPN
  • Article Type :
    Journal Article
  • ISSN :
    09196072
  • Databases :
    CJP  CJPref  NII-ELS 

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