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Optical Engineering

Compression-watermarking scheme for MPEG-4 fine granularity scalability video recompression and authentication
Author(s): Chuen-Ching Wang; Po-Yuen Cheng
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Paper Abstract

A novel fragile watermarking scheme is proposed. This scheme not only can verify the authenticity and integrity of the video streams with fine granularity scalability, but also can reduce the size of bit streams after embedding fragile watermark information into the base-layer stream and the bit-plane coding symbol in the enhancement-layer stream. For clarifying the effectiveness of the proposed scheme, a series of experimental simulations were conducted. The results show that the scheme can detect tampering modification in the content of video streams and identify the locations at which these modifications have been made. Furthermore, the scheme can further reduce the average length of the compressed bit stream by about 12%.

Paper Details

Date Published: 1 March 2008
PDF: 13 pages
Opt. Eng. 47(3) 037010 doi: 10.1117/1.2896600
Published in: Optical Engineering Volume 47, Issue 3
Show Author Affiliations
Chuen-Ching Wang, National Changhua Univ. of Education (Taiwan)
Po-Yuen Cheng, National Changhua Univ. of Education (Taiwan)

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