DCT符号を用いた知覚ハッシュの検討

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: 2017/10/01

タイトル(英語): Consideration of Perceptual Hash using DCT Signs

著者名: 江田　孝治（福岡大学工学部），西　保暢（福岡大学大学院工学研究科），折居　英章（福岡大学工学部）

著者名(英語): Takaharu Kouda (Faculty of Engineering, Fukuoka University), Yasunobu Nishi (Graduate School of Engineering, Fukuoka University), Hideaki Orii (Faculty of Engineering, Fukuoka University)

キーワード: 離散コサイン変換，知覚ハッシュ，DCT符号　　Discrete Cosine Transform，Perceptual Hash，DCT Sign

要約(英語): The purpose of this research is to consider a new method to generate a perceptual hash using the sign of the DCT coefficient of the image. DCT is performed by reducing the input image to 32×32 pixels, and the DCT coefficient of the low frequency component 8×8 pixels is extracted by raster scan. A 64-bit hash sequence is generated by setting 1 if the DCT coefficient is 0 or more and 0 if it is negative. The Hamming distance of the hash sequence of different images is 20 or more. On the other hand, it was found that the Hamming distance between images that people feel similar is 10 or less. From many experimental results, it was found that perceptual hash can be generated using the sign of the DCT coefficient of the low frequency component of the image.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.137 No.10 （2017）

本誌掲載ページ: 1433-1434 p

原稿種別: 研究開発レター／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/137/10/137_1433/_article/-char/ja/