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Paper Abstract and Keywords
Presentation 2021-08-25 13:00
A Reversible Data Hiding Scheme for the Grayscale-Based EtC System
Ruifeng Li, Masaaki Fujiyoshi (Tokyo Metro. Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes an encryption-then-compression (EtC) system-friendly data hiding method for images, where an EtC system compresses images after they are encrypted. The EtC system divides an image into non-overlapping blocks and applies the four processes, namely, block permutation, rotation/flipping of blocks, inverting brightness, and color component permutation in blocks, independently and randomly to the image to visually encrypt the image. The proposed method hides data to a plain, i.e., unencrypted image and the method can take embedded data out from the image encrypted by the system. Moreover, the method can perfectly recover the unmarked image from the marked, viz., reversible. The proposed method copes with block permutation, rotation/flipping of blocks, and inverting brightness in blocks, whereas the conventional methods for the system only copes with the former two processes. Furthermore, this conventional method requires the image-dependent information, used in data hiding, to extract embedded data, but the proposed method does not need such information. Experimental results show the effectiveness of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) block-based visual encryption / parameter memorization-free data hiding / perceptual encryption / / / / /  
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Conference Information
Conference Date 2021-08-25 - 2021-08-26 
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Place (in English) Online 
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Paper Information
Registration To IEICE-EMM 
Conference Code 2021-08-ME-EMM-IE-LOIS-CMN-AVM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Reversible Data Hiding Scheme for the Grayscale-Based EtC System 
Sub Title (in English)  
Keyword(1) block-based visual encryption  
Keyword(2) parameter memorization-free data hiding  
Keyword(3) perceptual encryption  
1st Author's Name Ruifeng Li  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
2nd Author's Name Masaaki Fujiyoshi  
2nd Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
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Speaker Author-1 
Date Time 2021-08-25 13:00:00 
Presentation Time 25 minutes 
Registration for IEICE-EMM 
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Volume (vol) vol.45 
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