Title :
Joint Multiple Watermarking and Non-Expansion Visual Cryptography
Author :
Hao Luo ; Zhao, Zhenfei ; Pan, Jeng-Shyang ; Lu, Zhe-Ming
Author_Institution :
Harbin Inst. of Technol., Harbin
Abstract :
This paper proposes a scheme to hide two watermarks in visual secret sharing of a gray level image. One watermark is embedded during secret image halftoning, and the other watermark is hidden during the halftone image encryption. A non-expansion visual secret sharing model is used to encrypt the halftone image. In data extraction, only exclusive-OR operation is needed. Experimental results show the effectiveness of our scheme.
Keywords :
cryptography; image coding; watermarking; gray level image; halftone image encryption; multiple watermarking; nonexpansion visual cryptography; secret image halftoning; visual secret sharing; Authentication; Bandwidth; Cryptography; Data mining; Humans; Image reconstruction; Pixel; Stacking; Variable structure systems; Watermarking; digital halftoning; lossless reconstruction; multiple watermarking; non-expansion; visual cryptography;
Conference_Titel :
Signal Design and Its Applications in Communications, 2007. IWSDA 2007. 3rd International Workshop on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-1074-3
Electronic_ISBN :
978-1-4244-1074-3
DOI :
10.1109/IWSDA.2007.4408406
