Effects of Spatial Domain Image Watermarking on Types of Printers and Printing Papers

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This paper presents the performance investigations of the spatial domain image watermarking for camera-captured images on different types of printers and printable materials. We examine the effects of our previous watermarking method based on the modification of image pixels on three types of printers, i.e. inkjet, laser and photo printers, and four different types of printing papers, i.e. uncoated, matte, glossy and semi-glossy papers. In the experiments, the DSLR camera is used as tool to capture the printed watermarked images, while the image registration technique based on projective transformation is used to diminish the RST and perspective distortions in the captured image. The performances in terms of extracted watermark accuracy at equivalent watermarked image quality on different types of printers and printing papers are measured and compared.

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564-567

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August 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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