Digital Image Multiresolution Watermark Based on Human Visual System Using Error Correcting Code

Ching-Tang  Hsieh; Yeh-Kuang Wu

doi:10.6180/jase.2001.4.3.07

Digital Image Multiresolution Watermark Based on Human Visual System Using Error Correcting Code

Ching-Tang Hsieh This email address is being protected from spambots. You need JavaScript enabled to view it.¹ and Yeh-Kuang Wu¹

¹Department of Electrical Engineering Tamkang University Tamsui, Taipei, Taiwan 251, R.O.C.

Received: July 15, 2001
Accepted: August 20, 2001
Publication Date: September 1, 2001

Download Citation: ||https://doi.org/10.6180/jase.2001.4.3.07

ABSTRACT

Digital watermarking has been proposed as a way to claim protection. In this paper, we try to use the error-correcting code skill, the multiresolution of wavelet transformation, and the human visual system to improve the traditional watermarking. Error-correcting based watermarking will have the property that corrects errors of the extracted watermark automatically. The HVS (Human Visual System) model will be presented to investigate perceptually characteristic parts of human (e.g. intensity or hue) and how to insert the watermark into the original data, where the perceptual sensitivity of human is relatively low. A multiresolution watermarking based on the wavelet transformation is selected in each frequency band of the Discrete Wavelet Transform (DWT) domain and therefore it can resist the destruction of image processing. In our experiments, the results show that the robustness of a watermark with ECC (Error Correct Coding) is much better than the traditional one without ECC.

Keywords: DWT, Watermark, HVS, Error-correcting Code, BCH

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