Robust print-cam image watermarking in fourier domain

Abstract

Perspective deformation is one of the major issues in printcam attacks for image watermarking. In this paper we adapt to printcam process a Fourier watermarking method developed by our team, for print-scan attacks. Our aim is to resist to perspective distortions of print-cam image watermarking for ID images for industrial application. A first step consists of geometrical correction of the perspective distortions, then Fourier based watermarking is used. Experimental results of the improved method in Fourier domain show better robustness compared to existing print-cam methods.