Recoverable Privacy Protection for Video Content Distribution. (10th January 2010)

• Record Type: Journal Article
• Authors: Li, Guangzhen; Ito, Yoshimichi; Yu, Xiaoyi; Nitta, Naoko; Babaguchi, Noboru
• Other Names: Senior Andrew Academic Editor.
• Is Part Of: EURASIP journal on information security. Volume 2009(2009)
• Publication Date: 2010-01-10
• Subjects: Computer security -- Periodicals; Computer networks -- Security measures -- Periodicals; Data encryption (Computer science) -- Periodicals; Cryptography -- Periodicals; 005.8
• DOI: 10.1155/2009/293031
• Languages: English
• ISSNs: 1687-417X

Abstract

Abstract : This paper presents a method which attains recoverable privacy protection for video content distribution. The method is based on discrete wavelet transform (DWT), which generates scaling coefficients and wavelet coefficients. In our method, scaling coefficients, which can be regarded as a low-resolution image of an original image, are used for producing privacy-protected image. On the other hand, wavelet coefficients, which can be regarded as privacy information, are embedded into the privacy-protected image via information hiding technique. Therefore, privacy protected image can be recovered by authorized viewers if necessary. The proposed method is fully analyzed through experiments from the viewpoints of the amount of the embedded privacy information, the deterioration due to the embedding, and the computational time.