Improvement of watermark detection ability based on blockwise image compensation for geometrical distortions

Ryuji Hisanaga; Minoru Kuribayashi; Hatsukazu Tanaka

doi:10.1002/ecjc.20235

Improvement of watermark detection ability based on blockwise image compensation for geometrical distortions

Ryuji Hisanaga, Minoru Kuribayashi, Hatsukazu Tanaka

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

One of the important problems of watermarking techniques is the weakness against geometrical distortions because of synchronization loss. In this paper, we propose an image compensation scheme against geometrical distortions in order to extract watermarks correctly. Our scheme collects the feature points in an image so as to recover the distortions caused by geometrical distortion attacks. Such feature points are selected by the local maximal value of partitioned regions which can be obtained by several filtering operations. Based on the computer simulated results, we have searched the optimal filtering operation and interpolation, and then studied the validity of our scheme.

Original language	English
Pages (from-to)	1-9
Number of pages	9
Journal	Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi)
Volume	89
Issue number	12
DOIs	https://doi.org/10.1002/ecjc.20235
Publication status	Published - Dec 2006
Externally published	Yes

Keywords

Affine transformations
Feature points
Geometrical distortions
Image compensation
Watermarking

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1002/ecjc.20235

Cite this

Improvement of watermark detection ability based on blockwise image compensation for geometrical distortions. / Hisanaga, Ryuji; Kuribayashi, Minoru; Tanaka, Hatsukazu.
In: Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi), Vol. 89, No. 12, 12.2006, p. 1-9.

Research output: Contribution to journal › Article › peer-review

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Improvement of watermark detection ability based on blockwise image compensation for geometrical distortions

Abstract

Keywords

ASJC Scopus subject areas

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