領域単位での平均輝度補正によるH.264/AVCイントラフリッカ低減手法

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2021/09/01

タイトル(英語): Intra Flicker Reduction Method for H.264/AVC with Average Signal Level Correction at Each Region

著者名: 伊藤　浩朗（大阪府立大学），吉岡　理文（大阪府立大学）

著者名(英語): Hiroaki Ito (Osaka Prefecture University), Michifumi Yoshioka (Osaka Prefecture University)

キーワード: 画像圧縮，H.264/AVC，イントラフリッカ，ノイズ低減　　image compression，H.264/AVC，intra flicker，noise reduction

要約(英語): The H.264/AVC standard has better coding efficiency comparing with former video coding standards. However, it still includes temporal artifacts, known as intra flicker.In this paper, we propose intra flicker reduction method, which characteristic is to compensate average signal level of I picture in terms of macro block depending on the difference of average signal level of macro block between I picture and that of previous P picture. In detail, we propose 2 approaches to realize our idea. The first one is to implement our idea as post filter of decoder, which complies with the H.264/AVC standard. The second approach is to implement it in in-loop filter of both encoder and decoder, which requires a little change from the H.264/AVC standard. As our evaluation result, we confirmed that both approaches have efficiency to reduce intra flicker, 14.1[%] with the first approach, and 16.8[%] with the second approach, both as the maximum effect.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.141 No.9 （2021） 特集：知能メカトロニクス分野と連携する知覚情報技術

本誌掲載ページ: 1023-1031 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/141/9/141_1023/_article/-char/ja/