Audio-signal watermarking in 3-D space based on virtual-optics

Authors: Peng, Xiang¹; Zhang, Peng²; Niu, Hanben¹

Source: Optik – International Journal for Light and Electron Optics, Volume 114, Number 10, February 2004 , pp. 451-456(6)

Publisher: Urban & Fischer

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Abstract:

This paper presents a new approach for audio-signal watermarking in three-dimensional (3-D) space. The method proposed in this paper offers an efficient way of copyright protection of audio signal through a virtual-optical-imaging scheme (VOIS). The watermarking method presented here does not require the use of original signal for watermark detection. Besides, this scheme is of a high-strength security system with multiple locks and multiple keys. The embedding strategy of a watermark with a methodology of the VOIS is analyzed in detail under the framework of Fourier optics. The embedded watermark is robust to normal signal manipulations. Numerical simulation results show a good agreement with theoretical prediction.

Document Type: Research article

DOI: http://dx.doi.org/10.1078/0030-4026-00295

Affiliations: 1: Institute of Optoelectronics, Shenzhen University and Key Laboratory of Optoelectronics Devices and Systems, 518060 Shenzhen, Guangdong Province, China 2: College of Precision Instrumentation and Optoelectronics Engineering, Tianjin University, 300072 Tianjin, China

Publication date: 2004-02-01