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Outlier Aggregation to Pick Up Scattered Watermark Energy

Abstract: 

Correlation-based watermark detection inherently assumes that a pseudo-random watermark pattern is present in the cover signal at a given location. However, disparity-coherent watermarks for stereo video content are broken into pieces which are offset one with respect to the others. Acoustic transmission yields echoes due to multi-path propagation and may thus introduce watermark replicates in the recorded audio track. In such cases, the watermark energy is not concentrated in a single element of the cross-correlation array but rather distributed over a number of them. As a result, it is necessary to devise aggregation strategies to recover these scattered watermarks. In this paper, we present a method that relies on outlier detection to identify which elements of the correlation array are associated to the embedded watermark and should be aggregated. Experimental results clearly demonstrate the ability of this technique to recover the watermark without introducing undesired false positives, even in noisy conditions.

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Paper Details

Authors:
Hasan Sheikh-Faridul
Submitted On:
23 February 2016 - 1:43pm
Short Link:
Type:
Poster
Event:
Presenter's Name:
Gwenaël Doërr

Document Files

ICIP2015_poster_landscape.pdf

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[1] Hasan Sheikh-Faridul, "Outlier Aggregation to Pick Up Scattered Watermark Energy", IEEE SigPort, 2015. [Online]. Available: http://sigport.org/228. Accessed: Dec. 17, 2017.
@article{228-15,
url = {http://sigport.org/228},
author = {Hasan Sheikh-Faridul },
publisher = {IEEE SigPort},
title = {Outlier Aggregation to Pick Up Scattered Watermark Energy},
year = {2015} }
TY - EJOUR
T1 - Outlier Aggregation to Pick Up Scattered Watermark Energy
AU - Hasan Sheikh-Faridul
PY - 2015
PB - IEEE SigPort
UR - http://sigport.org/228
ER -
Hasan Sheikh-Faridul. (2015). Outlier Aggregation to Pick Up Scattered Watermark Energy. IEEE SigPort. http://sigport.org/228
Hasan Sheikh-Faridul, 2015. Outlier Aggregation to Pick Up Scattered Watermark Energy. Available at: http://sigport.org/228.
Hasan Sheikh-Faridul. (2015). "Outlier Aggregation to Pick Up Scattered Watermark Energy." Web.
1. Hasan Sheikh-Faridul. Outlier Aggregation to Pick Up Scattered Watermark Energy [Internet]. IEEE SigPort; 2015. Available from : http://sigport.org/228