DocumentCode
2874498
Title
Robust Image Watermarking against Brightness and Contrast Change
Author
Gong Daofu ; Liu Fenlin ; Luo Xiangyang ; Wang Ping
Author_Institution
Zhengzhou Inf. Sci. & Technol. Inst., Zhengzhou, China
fYear
2012
fDate
2-4 Nov. 2012
Firstpage
995
Lastpage
998
Abstract
The brightness and contrast changes are common image processing, so a robust watermarking algorithm against them is presented based on image edge detection in this article. Firstly Prewitt operator is used for image edge detection. Secondly watermark is embedded into the gradient amplitude and direction of the edge point. The invisibility of our algorithm is better for the masking effect of human vision. And the robustness is also better for the stability of the edge.
Keywords
brightness; differentiation; edge detection; gradient methods; image watermarking; mathematical operators; Prewitt operator; brightness change; contrast change; edge point direction; edge stability; gradient amplitude; human vision masking effect; image edge detection; image processing; robust image watermarking algorithm; watermark embedding; Brightness; Discrete cosine transforms; Image edge detection; PSNR; Robustness; Watermarking; brightness change; contrast change; image edge; robust watermarking;
fLanguage
English
Publisher
ieee
Conference_Titel
Multimedia Information Networking and Security (MINES), 2012 Fourth International Conference on
Conference_Location
Nanjing
Print_ISBN
978-1-4673-3093-0
Type
conf
DOI
10.1109/MINES.2012.252
Filename
6405748
Link To Document