Title :
An adaptive spread spectrum watermarking algorithm based on orthogonal Walsh codes
Author :
Jun, Fu ; Shou-huai, Wang
Author_Institution :
Inst. of Electron. & Inf. Eng., JinChu Univ. of Technol., Jingmen, China
Abstract :
This paper presents a Walsh code orthogonal spread spectrum watermarking algorithm. First, the watermark is modulated by two orthogonal Walsh codes. Then the watermark is embedded into the medium frequency and low frequency of the carrier block, according to the visual masking effect of the human visual system. The extraction of the watermark without the original image, using correlation detection to despreading. Experimental results show that the algorithm is robust variety of attacks.
Keywords :
Walsh functions; orthogonal codes; spread spectrum communication; watermarking; adaptive spread spectrum watermarking; carrier block; human visual system; modulated watermark; orthogonal Walsh codes; visual masking effect; Adaptation model; Correlation; Digital images; Discrete cosine transforms; Transform coding; Visualization; Watermarking; Chaotic Encryption; HVS; JND;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on
Conference_Location :
XianNing
Print_ISBN :
978-1-61284-458-9
DOI :
10.1109/CECNET.2011.5768209
