Power: Metrics for evaluating watermarking algorithms

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Author

Radu Sion and Mikhail Atallah and Sunil Prabhakar

Tech report number

CERIAS TR 2001-55

Entry type

inproceedings

Abstract

Whereas the maximal amount of information that a certain algorithm can ``hide\" (while keeping the data within allowable distortion bounds) is certainly related to the ability to assert ownership in court, it is not directly measuring its ``power of persuasion\", in part also because it doesn\'t consider directly the existence and power of watermarking attacks. In this paper we show why, due to its particularities, watermarking requires a different metric, more closely related to its ultimate purpose, claiming ownership in a court of law. We define one suitable metric ({\\em watermarking power}) and show how it relates to derivates of hiding capacity. We prove that there are cases where considering hiding capacity is sub-optimal as a metric in evaluating watermarking methods whereas the metric of {\\em watermarking power} delivers good results.

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Date

2002 – 04

Booktitle

Proceedings of ITCC02

Institution

Purdue University

Key alpha

sion2002wmpower

Affiliation

CERIAS and Computer Sciences Department

Publication Date

1900-01-01

Language

English

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@Inproceedings{ sion2002wmpower,
	title = "Power: Metrics for evaluating watermarking algorithms",
	author = "Radu Sion and Mikhail Atallah and Sunil Prabhakar",
	year = "2002",
	month = "04",
	booktitle = "Proceedings of ITCC02",
	institution = "Purdue University",
	abstract = "Whereas the maximal amount of information that a certain algorithm
can ``hide\" (while keeping the data within allowable distortion bounds)
is certainly related to the ability to assert ownership in court,
it is not directly measuring its ``power of persuasion\",
in part also because it doesn\'t consider directly the existence and
power of watermarking attacks.
 
In this paper we show why,
due to its particularities, watermarking requires a different metric,
more closely related to its ultimate purpose, claiming ownership in
a court of law. We define one suitable metric ({\\em watermarking power}) and
show how it relates to
derivates of hiding capacity. We prove that there are cases where
considering hiding capacity is sub-optimal as a metric in evaluating
watermarking methods whereas the metric of {\\em watermarking power}
delivers good results.
",
	affiliation = "CERIAS and Computer Sciences Department",
	language = "English",
}