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An Efficient Image Watermarking Method Based on Fast Discrete Cosine Transform Algorithm
Joint Authors
Tsai, S. E.
Liu, K. C.
Yang, S. M.
Source
Mathematical Problems in Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-08-16
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
This paper proposes an image watermarking method based on the fast discrete cosine transform (DCT) algorithm for implementation in digital signal processor.
A digital watermark can be effectively embedded and efficiently extracted without the host image.
The keys in watermarking process include four frequency coefficients in DCT, two random permutation vectors, and a quantization matrix for normalizing the watermark and the host image.
The fast DCT algorithm has been shown to reduce the complexity of two-dimensional image transformation so that embedding/decoding an image watermark can be completed in real time within 0.33 seconds.
The quality of both watermarked image and extracted (retrieved) watermark remains excellent.
It is shown that the watermarking method is efficient in and robust to data cropping, transmission loss, and compression/decompression.
American Psychological Association (APA)
Tsai, S. E.& Liu, K. C.& Yang, S. M.. 2017. An Efficient Image Watermarking Method Based on Fast Discrete Cosine Transform Algorithm. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1190197
Modern Language Association (MLA)
Tsai, S. E.…[et al.]. An Efficient Image Watermarking Method Based on Fast Discrete Cosine Transform Algorithm. Mathematical Problems in Engineering No. 2017 (2017), pp.1-10.
https://search.emarefa.net/detail/BIM-1190197
American Medical Association (AMA)
Tsai, S. E.& Liu, K. C.& Yang, S. M.. An Efficient Image Watermarking Method Based on Fast Discrete Cosine Transform Algorithm. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1190197
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1190197