限定色画像に対する選択的埋め込み可能な多ビットステガノグラフィ

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: 2018/12/01

タイトル(英語): Selectively Embeddable Multi-bit Steganographic Method for Palette-based Images

著者名: 植田　祥明（山口大学大学院），古賀　崇了（国立高等専門学校機構 徳山工業高等専門学校），末竹　規哲（山口大学大学院），内野　英治（山口大学大学院）

著者名(英語): Yoshiaki Ueda (Graduate School of Sciences and Technology for Innovation, Yamaguchi Univeresity), Takanori Koga (National Institute of Technology, Tokuyama College), Noriaki Suetake (Graduate School of Sciences and Technology for Innovation, Yamaguchi Uni

キーワード: ステガノグラフィ，情報埋め込み，限定色画像　　steganography，information embedding，palette-based image

要約(英語): Steganography is a technique to hide a secret data into stego-data for secret communications. In the steganography, it is important to suppress a degradation of the stego-image for data hiding. The stego-image of the steganographic method is divided into full-color images and palette-based images. In this paper, we propose a new multi-bit steganographic method for the palette-based images. In the case of embedding for palette-based images, there are two characteristics described below. (1) Embedding degradation is not remarkable because palette-based images have been degraded due to color quantization and error-diffusion processes. (2) The embedding error tends to greater than full-color images due to usable colors are few. In the proposed method, representative colors of the palette-based image are sorted and their index numbers are replaced so that the embedding error becomes small. The proposed method suppresses the degradation of the cover-image by dispersing the embedding coordinates. We verify the effectiveness of our method through experiments using palette-based color images.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.138 No.12 （2018） 特集：電気・電子・情報関係学会東海支部連合大会

本誌掲載ページ: 1595-1603 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/138/12/138_1595/_article/-char/ja/