Interactive Media Systems, TU Vienna

Parameterized Sketches from Stereo Images

By Danijela Markovic, Efstathios Stavrakis, and Margrit Gelautz


In this paper we present an algorithm to automatically generate sketches from stereo image pairs. Stereo analysis is initially performed on the input stereo pair to estimate a dense depth map. An Edge Combination image is computed by localising object contour edges, as indicated by the depth map, within the intensity reference image. We then approximate these pixel-represented contours by devising a new parametric curve fitting algorithm. The algorithm successfully recovers a minimum number of control points required to fit a Bézier curve onto the pixel-edge dataset in the Edge Combination image. Experiments demonstrate how the Edge Combination algorithm, used for dominant edge extraction, can be combined with a curve fitting algorithm to automatically provide parameterized artistic sketches or concept drawings of a real scene.


D. Markovic, E. Stavrakis, M. Gelautz: "Parameterized Sketches from Stereo Images"; Poster: SPIE Electronic Imaging Conference, San Jose, USA; 01-16-2005 - 01-20-2005; in: "Proceedings of SPIE - Image and Video Communications and Processing 2005, Volume 5685", (2005), 783 - 791.


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