EG UK Theory and Practice of Computer Graphics 2013

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Browsing EG UK Theory and Practice of Computer Graphics 2013 by Subject "Graphics Utilities"

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    StegoNPR: Information Hiding in Painterly Renderings
    (The Eurographics Association, 2013) Lord, Craig; Collomosse, John; Silvester Czanner and Wen Tang
    We present a novel steganographic technique for concealing information within an image. Uniquely we explore the practicality of hiding, and recovering, data within the pattern of brush strokes generated by a non-photorealistic rendering (NPR) algorithm. We incorporate a linear binary coding (LBC) error correction scheme over a raw data channel established through the local statistics of NPR stroke orientations. This enables us to deliver a robust channel for conveying short (e.g. 30 character) strings covertly within a painterly rendering. We evaluate over a variety of painterly renderings, parameter settings and message lengths.