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Bibliographic record number: 577976

Journal

Authors: Poljičak, Ante; Mandić, Lidija; Strgar Kurečić, Maja
Title: Improvement of the Watermark Detector Perfomance Using Image Enhancement Filters
Source: PROCEEDINGS IWSSIP 2012 / Rupp, Markus ; Wistawel, Bernhard (ed). - Beč :
Meeting: 19th International Conference on Systems, Signals and Image Processing, IWSSIP 2012
Location and date: Beč, Austrija, 11-13.4.2012
Keywords: Image Watermarking; unsharp filter; deconvolution; PS process; watermark detection rate
Abstract:
In this paper we consider the influence of some image processing techniques on the watermark detection rate. Even today’s state of the art watermarking methods are still very sensitive to complex degradation attacks such are JPEG compression, or printscan process, so the detection rate of a watermark method decreases considerably after such attacks on a watermarked image. To improve the detection rate we reduce the degradation of the image by using unsharp, Laplacian or deconvolution filter. For the experiment dataset of 1000 images were watermarked and then compressed or printed and scanned. Degraded images were enhanced using unsharp, Laplacian and blind deconvolution filter. The watermark detection rate before and after enhancement was measured and compared. The results show that the enhancement filtering improves the watermark detection rate for almost 10 % for print scan attack and 8 % for JPEG compression.
Type of meeting: Predavanje
Type of presentation in a journal: Full-text (1500 words and more)
Type of peer-review: International peer-review
Project / theme: 128-1201785-2228, 128-1281957-1958
Original language: ENG
Category: Znanstveni
Research fields:
Graphic technology
Contrib. to CROSBI by: apoljica@grf.hr (apoljica@grf.hr), 25. Tra. 2012. u 12:24 sati



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