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Publication details
Authors M.BarniF.BartoliniF.SaluccoA.Piva
Title Robust Watermarking of Cartographic Images
Abstract In this work, we present a method (Text-Based Geometric Normalization - TBGN) which, by exploiting the particular content of cartographic images, namely text content, permits to cope with global geometric transformations. First text is extracted from the to-be-marked map, then text orientation and size are exploited to normalize the image geometry prior to watermark insertion. Watermarking is performed by means of any of the existing algorithms ensuring good robustness against image processing tools. At the decoder side, text is extracted again from the map and used to normalize image geometry. Owing to the robustness of text features with respect to common image manipulations, and to the likely spreading of text all across the digital map, the proposed system exhibits an excellent robustness.
Publication EURASIP Journal on Applied Signal Processing
Typology International Journal Papers
Date February 2002
Other info vol. 2002, no. 2, pp. 197-208, 
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