Improvement of the Watermark Detector Perfomance Using Image Enhancement Filters (CROSBI ID 585998)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Poljičak, Ante ; Mandić, Lidija ; Strgar Kurečić, Maja
engleski
Improvement of the Watermark Detector Perfomance Using Image Enhancement Filters
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.
Image Watermarking; unsharp filter; deconvolution; PS process; watermark detection rate
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Podaci o prilogu
74-77.
2012.
objavljeno
Podaci o matičnoj publikaciji
PROCEEDINGS IWSSIP 2012
Rupp, Markus ; Wistawel, Bernhard
Beč:
978-3-200-02588-2
Podaci o skupu
19th International Conference on Systems, Signals and Image Processing, IWSSIP 2012
predavanje
11.04.2012-13.04.2012
Beč, Austrija