監視カメラ向け適応型HDRシステムと電子制御ガンマ補正回路の提案

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: 2024/04/01

タイトル(英語): Proposal of an Adaptive HDR System and Electronically Controlled Gamma Correction Circuit for a Surveillance Camera

著者名: 韓　奥（東洋大学大学院 理工学研究科 電気電子情報専攻），佐野　勇司（東洋大学大学院 理工学研究科 電気電子情報専攻）

著者名(英語): Ao Han (Graduate School of Science and Engineering, Course of Electricity, Electronics and Communications, Toyo University), Yuji Sano (Graduate School of Science and Engineering, Course of Electricity, Electronics and Communications, Toyo University)

キーワード: 監視カメラ，HDRシステム，ガンマ補正回路，映像劣化，平均輝度　　surveillance camera，HDR system，gamma correction circuit，image damage，average luminance

要約(英語): The purpose of this research is to propose a small-scale adaptive HDR (High Dynamic Range) system that can be implemented in cameras that can be applied to simple monitoring systems widely used in small cameras such as webcams, and to develop a gamma correction circuit to be installed in the HDR system to correct image degradation in the camera. Another purpose of this research is to show that image degradation can be largely corrected by controlling the optimal gamma correction value according to the average luminance value of the captured image, and proposed a conversion formula. We also proposed a gamma correction circuit that can electronically control its exponent value, and confirmed the correcting operation as designed by making a prototype circuit. Actually, the gamma correction circuit was used to display a grayscale pattern on an LCD, and the effect of image correction was verified. Future task is correcting image damages of black down and blown out at the same time. And another task is to increase higher cut off frequency of the gamma correction circuit.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.144 No.4 （2024） 特集Ⅰ：量子・情報・エレクトロニクスの医療/ヘルスケア応用　特集Ⅱ：電子回路関連技術

本誌掲載ページ: 330-336 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/144/4/144_330/_article/-char/ja/