A content dependent spatially localized video watermark forresistance to collusion and interpolation attacks
Su, K.
Kundur, D.
Hatzinakos, D.
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont.;
This paper appears in: Image Processing, 2001. Proceedings. 2001 International Conference on
Publication Date: 2001
Volume: 1,
On page(s): 818-821 vol.1
Meeting Date: 10/07/2001 - 10/10/2001
Location: Thessaloniki, Greece
ISBN: 0-7803-6725-1
References Cited: 11
INSPEC Accession Number: 7210985
Digital Object Identifier: 10.1109/ICIP.2001.959171
Current Version Published: 2002-08-07
Abstract
This paper presents a novel video watermarking algorithm based on
two key ideas: statistical invisibility and content-synchronized
placement. We argue that statistical invisibility is essential to
protect video watermarks from statistical collusion, and present a
natural way to induce this property using a content-dependent spatially
localized watermarking framework. We introduce the notion of a watermark
footprint, the spatial locations over which its energy is spread. By
defining localized footprints with regular structures, e.g., a set of
subframes within each frame, current image watermarking techniques can
immediately be applied at the subframe-level. We address the issue of
reduced spatial redundancy by proposing an attack model based on
bilinear interpolation, and embedding the watermark into regions with
lower expected distortions. Results are presented to demonstrate the
effectiveness of the algorithm
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