DCTおよびVQを用いた画像電子透かし

Material type: 文書・図像類

Author: 柴田, 且崇ほか

Publisher: 愛知工業大学

Publication date: 2012-03-31

Material Format: Digital

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Note (General)：: This paper describes two digital watermarking methods using DCT (Discrete Cosine Transform) and VQ (Vector Quantization). A bi-level (1 bit/pixel) wat...

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Material Type: 文書・図像類
Title: DCTおよびVQを用いた画像電子透かし
Author/Editor: 柴田, 且崇
沢田, 克敏
中村, 栄治
Author Heading: 柴田, 且崇
沢田, 克敏
中村, 栄治
Publication, Distribution, etc.: 愛知工業大学
Publication Date: 2012-03-31
Publication Date (W3CDTF): 2012-03-31
Alternative Title: DCT　オヨビ　VQ　ヲ　モチイタ　ガゾウ　デンシ　スカシ
Digital watermarking for images using DCT and VQ
Periodical title: 愛知工業大学研究報告 = Bulletin of Aichi Institute of Technology
No. or year of volume/issue: 47
Volume: 47
Pages: 237-245
ISSN (Periodical Title): ISSN : 1883-3217
Text Language Code: jpn
Target Audience: 一般
Note (General): This paper describes two digital watermarking methods using DCT (Discrete Cosine Transform) and VQ (Vector Quantization). A bi-level (1 bit/pixel) watermarking image has been embedded in target gray scale images. In the DCT watermarking method, DCT coefficients of target gray scale images are modified by watermarking information 1/0. In the VQ watermarking method, a VQ code book is divided to 2 groups which are assigned to watermarking information 1/0, respectively. Experiments have been carried out. The SNR (Signal to Noise Ratio) of embedded target images and the BER (Bit Error Rate) of extracted watermarking information have been studied. Our Experimental results have shown that the DCT method is superior to the VQ method.
identifier:http://repository.aitech.ac.jp/dspace/handle/11133/1555
Format (IMT): application/pdf
Source: http://repository.aitech.ac.jp/dspace/bitstream/11133/1555/1/%e7%b4%80%e8%a6%8147%e5%8f%b7%28P237-245%29.pdf
http://repository.aitech.ac.jp/dspace/bitstream/11133/1555/1/%e7%b4%80%e8%a6%8147%e5%8f%b7%28P237-245%29.pdf
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 愛知工業大学 : 愛知工業大学学術情報リポジトリ