Perceptual quality evaluation of geometrically distorted images using relevant geometric transformation modeling

Iwan Setyawan; Damien Delannay; Benoit M. M. Macq; Reginald L. Lagendijk

doi:10.1117/12.476853

20 June 2003 Perceptual quality evaluation of geometrically distorted images using relevant geometric transformation modeling

Iwan Setyawan, Damien Delannay, Benoit M. M. Macq, Reginald L. Lagendijk

Author Affiliations +

Proceedings Volume 5020, Security and Watermarking of Multimedia Contents V; (2003) https://doi.org/10.1117/12.476853
Event: Electronic Imaging 2003, 2003, Santa Clara, CA, United States

Abstract

One of the most active research area in the watermarking community is the research in dealing with geometric distortion. The geometric distortion problem has two aspects, namely its effect on watermark detectability and its effect on the perceptual quality of the watermarked data. Most research in this area has been concentrated on addressing the first aspect of the problem, and research on objective visual quality assessment of geometrically distorted images is not widely discussed in the literature. As a consequence, there is a lack of objective visual quality measurement for this class of distortion. In this paper we propose a method of objectively assessing the perceptual quality of geometrically distorted images. Our approach is based on the modeling of a complex, global geometric distortion using local, simpler geometric transformation models. The locality of this simpler geometric transformation determines the visual quality of the distorted images.

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Iwan Setyawan, Damien Delannay, Benoit M. M. Macq, and Reginald L. Lagendijk "Perceptual quality evaluation of geometrically distorted images using relevant geometric transformation modeling", Proc. SPIE 5020, Security and Watermarking of Multimedia Contents V, (20 June 2003); https://doi.org/10.1117/12.476853

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