Auflistung nach Autor:in "Frese, Christian"
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- KonferenzbeitragFusion of combined stereo and focus series for depth estimation(INFORMATIK 2006 – Informatik für Menschen, Band 1, 2006) Gheta, Ioana; Frese, Christian; Heizmann, MichaelEstimating depth maps is an important step towards 3D reconstruction. In order to compensate the insufficiencies that different image based methods impose, a fusion of multiple information sources for depth estimation is proposed. This article concentrates on obtaining depth information by fusing combined stereo and focus series, which are efficiently gained using a multivariate camera array.
- KonferenzbeitragA New Approach for Estimating Depth by Fusing Stereo and Defocus Information(Informatik 2007 – Informatik trifft Logistik – Band 1, 2007) Gheţa, Ioana; Frese, Christian; Heizmann, Michael; Beyerer, JürgenSeveral algorithms are common for estimating depth from stereo series, but many of them have difficulties when determining depth of objects having periodical structure. This contribution proposes a method to overcome the impediments by using defocus as additional information. The algorithm fuses depth from stereo and depth from defocused edges by analyzing and evaluating image series with simultaneously varied camera and focus positions. The problem is formulated by a comprehensive notation using energy functionals, which can be solved e. g. by applying graph cuts minimization.