Robust Object-Based Watermarking Using Feature Matching

Authors:
Viet-Quoc Pham;Takashi Miyaki;Toshihiko Yamasaki;Kiyoharu Aizawa
Affiliations:
-;-;-;-
Venue:
IEICE - Transactions on Information and Systems
Year:
2008

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Abstract

We present a robust object-based watermarking algorithm using the scale-invariant feature transform (SIFT) in conjunction with a data embedding method based on Discrete Cosine Transform (DCT). The message is embedded in the DCT domain of randomly generated blocks in the selected object region. To recognize the object region after being distorted, its SIFT features are registered in advance. In the detection scheme, we extract SIFT features from the distorted image and match them with the registered ones. Then we recover the distorted object region based on the transformation parameters obtained from the matching result using SIFT, and the watermarked message can be detected. Experimental results demonstrated that our proposed algorithm is very robust to distortions such as JPEG compression, scaling, rotation, shearing, aspect ratio change, and image filtering.