DEVELOPMENT OF A SOFTWARE MPEG-4 ENCODER FOR REAL-TIME APPLICATIONS (Image Processing and Coding)(International Workshop On Advanced Image Technology (IWAIT2004))

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概要

• 論文の詳細を見る

• A high-quality software MPEG-4 encoder for real-time applications is proposed. A low-complexity 1-pass VBR (variable bitrate) control method is introduced. In this method, quantization scale is limited within a predefined range to keep picture quality. Using the total bitrate and transition of a virtually estimated decoder buffer that is updated by average bitrate, the quantization-scale range is controlled nonlinearly. A frame-based motion evaluation technique is used for scene-change detection and flash-detection to assign VOP (video object plane) coding types to improve random access capabilities and to increase coding efficiency. As a result, high-quality and real-time encoding of SDTV resolution is achieved at the bitrate of 2Mbps.

• 社団法人電子情報通信学会の論文
• 2004-01-05

著者

• Yamaguchi Noboru

  Corporate Research & Development Center Toshiba Corporation

• Matsumura A

  Corporate Research & Development Center Toshiba Corporation

• Kodama Tomoya

  Corporate Research & Development Center Toshiba Corporation

• Matsumura Atsushi

  Corporate Research & Development Center Toshiba Corporation

• Kodama Tomoya

  Corporate Research & Development Center Toshiba Corporation

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• DEVELOPMENT OF A SOFTWARE MPEG-4 ENCODER FOR REAL-TIME APPLICATIONS (Image Processing and Coding)(International Workshop On Advanced Image Technology (IWAIT2004))

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