Improving SVD-based image watermarking via block-by-block optimization on singular values

Huang Nan Huang, Der-fa Chen, Chiu Chun Lin, Shuo Tsung Chen, Wei Che Hsu

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The purpose of this paper is to improve the robustness of traditional image watermarking based on singular value decomposition (SVD) by using optimization-based quantization on multiple singular values in the wavelet domain. In this work, we divide the middle-frequency parts of discrete-time wavelet transform (DWT) into several square blocks and then use multiple singular value quantizations to embed a watermark bit. To minimize the difference between original and watermarked singular values, an optimized-quality formula is proposed. First, the peak signal-to-noise ratio (PSNR) is defined as a performance index in a matrix form. Then, an optimized-quality functional that relates the performance index to the quantization technique is obtained. Finally, the Lagrange Principle is utilized to obtain the optimized-quality formula and then the formula is applied to watermarking. Experimental results show that the watermarked image can keep a high PSNR and achieve better bit-error rate (BER) even when the number of coefficients for embedding a watermark bit increases.

Original languageEnglish
Article number25
JournalEurasip Journal on Image and Video Processing
Volume2015
Issue number1
DOIs
Publication statusPublished - 2015 Dec 22

Fingerprint

Image watermarking
Singular value decomposition
Signal to noise ratio
Watermarking
Bit error rate
Wavelet transforms

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Information Systems
  • Electrical and Electronic Engineering

Cite this

Huang, Huang Nan ; Chen, Der-fa ; Lin, Chiu Chun ; Chen, Shuo Tsung ; Hsu, Wei Che. / Improving SVD-based image watermarking via block-by-block optimization on singular values. In: Eurasip Journal on Image and Video Processing. 2015 ; Vol. 2015, No. 1.
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Improving SVD-based image watermarking via block-by-block optimization on singular values. / Huang, Huang Nan; Chen, Der-fa; Lin, Chiu Chun; Chen, Shuo Tsung; Hsu, Wei Che.

In: Eurasip Journal on Image and Video Processing, Vol. 2015, No. 1, 25, 22.12.2015.

Research output: Contribution to journalArticle

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