Feature-based image watermarking method using scale-invariant keypoints

Authors:
Hae-Yeoun Lee;Choong-hoon Lee;Heung-Kyu Lee;Jeho Nam
Affiliations:
Department of EECS, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea;Department of EECS, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea;Department of EECS, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea;Broadcasting Media Research Group, Electronics and, Telecommunications Research Institute, Daejeon, Republic of Korea
Venue:
PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part II
Year:
2005

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Abstract

This paper addresses feature-based image watermarking methods for digital contents. Most previous watermarking algorithms suffer from geometric distortion attacks that desynchronize the location of the inserted watermark. In order to synchronize the watermark location, watermark synchronization should be performed. One solution for watermark synchronization is to use image features. This paper describes a feature-based watermarking method based on scale-invariant keypoints. We extract feature points from the scale-invariant keypoint extractor and then decompose feature points into a set of disjoint triangles. These triangles are watermarked by an additive spread-spectrum method on the spatial domain. We perform an intensive simulation in comparison with other feature-based watermarking methods using 100 test images. Results show that the proposed method is considerably robust against both geometric distortion attacks and signal processing attacks listed in Stirmark 3.1.