Digital image watermarking scheme based on histogram in DWT domain

UM > Faculty of Science and Technology > DEPARTMENT OF COMPUTER AND INFORMATION SCIENCE

Status	已發表Published
	Digital image watermarking scheme based on histogram in DWT domain
	Yuan X.-C.; Pun C.-M.
	2010-10-26
Source Publication	Proceeding - 6th International Conference on Digital Content, Multimedia Technology and Its Applications, IDC2010
Pages	395-399
Abstract	A robust and geometric invariant digital watermarking scheme for gray-level images is proposed in this paper. The scheme carries out watermark embedding and extraction based on histogram in DWT domain. For watermark embedding, the original image is decomposed into the approximation and details sub-bands. Pixels of the approximation sub-band are grouped into m blocks, each of which has the same number of intensity-levels, thus the block histogram is generated; with the block histogram, pixels are moved to form a specific pattern in the intensity-level histogram distribution, indicating the watermark. For watermark extraction, the watermarked image is decomposed into the approximation and details sub-bands; then the pixels in the approximation sub-band are grouped into blocks in the similar manner. According to the histogram distribution in each block, the watermark is extracted. Experimental results show that the proposed scheme is highly robust against JPEG compression, geometric attacks and some common signal processing.
Keyword	Discrete wavelet transform Geometric invariant Histogram Robust watermarking
URL	View the original
Language	英語English
Fulltext Access	View Full-Text via Scopus
Document Type	Conference paper
Collection	DEPARTMENT OF COMPUTER AND INFORMATION SCIENCE
Affiliation	Universidade de Macau
First Author Affilication	University of Macau
Recommended Citation GB/T 7714	Yuan X.-C.,Pun C.-M.. Digital image watermarking scheme based on histogram in DWT domain[C], 2010, 395-399.
APA	Yuan X.-C.., & Pun C.-M. (2010). Digital image watermarking scheme based on histogram in DWT domain. Proceeding - 6th International Conference on Digital Content, Multimedia Technology and Its Applications, IDC2010, 395-399.

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