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Bibliographic record number: 509287

Journal

Authors: Poljičak, Ante; Mandić, Lidija; Agic, Darko
Title: Robustness of a DFT Based Image Watermarking Method Against AM Halftoning
Source: Tehnički vjesnik : znanstveno-stručni časopis tehničkih fakulteta Sveučilišta u Osijeku (1330-3651) 18 (2011), 2; 161-166
Paper type: article
Keywords: amplitude modulated halftoning; discrete fourier transform; image; watermark
Abstract:
In this paper the robustness of a Discrete Fourier Transform (DFT) based image watermarking scheme to amplitude modulation (AM) halftoning is evaluated. Halftoning is used for reproduction of continuous images. Thus, it is important that a watermarking method is robust to halftoning. Three different shapes of clustered dots of AM (Amplitude Modulation) halftones are used (round, ellipse and line) with five different halftone frequencies (10, 13, 15, 40, and 60 line/cm). The tests where done on a dataset of 1000 images. As the metric of robustness, watermark detection rate, distribution of detection values, and ROC (Receiver Operation Characteristic) curves were used. The results showed that the watermarking scheme is robust to halftoning for halftone frequencies greater than 15 line/cm. Also, the type of AM halftone used has almost no effect on a detection rate.
Project / theme: 128-1201785-2228, 128-1281957-1958
Original language: ENG
Citation databases: Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Category: Znanstveni
Research fields:
Graphic technology,Computer science
URL cjelovitog rada:
Google Scholar: Robustness of a DFT Based Image Watermarking Method Against AM Halftoning
Contrib. to CROSBI by: apoljica@grf.hr (apoljica@grf.hr), 6. Tra. 2011. u 14:34 sati



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