Title :
Extension of epipolar image analysis to circular camera movements
Author :
Feldmann, Ingo ; Eisert, Peter ; Kauff, Peter
Author_Institution :
Fraunhofer Inst. for Telecommun., Heinrich-Hertz-Inst., Berlin, Germany
Abstract :
Epipolar image analysis is a robust method for 3D scene depth reconstruction that uses all available views of an image sequence simultaneously. It is restricted to horizontal, linear, and equidistant camera movements. In this paper, we present a concept for an extension of epipolar image analysis to other camera configurations like, e.g., circular movements. Instead of searching for straight lines in the epipolar image, we explicitly compute the trajectories of particular points through the image cube. Variation of the unknown depth leads to different curves. From those, the one corresponding to the true depth is selected by evaluating color constancy along the curve. In order to handle occlusions correctly an explicit occlusion compatible ordering scheme is derived for the case of circular movements. To compensate the influence of perspective projection we introduce a depth corrected epipolar image analysis algorithm which we call image cube trajectory analysis (ICT).
Keywords :
cameras; image reconstruction; image sequences; 3D scene depth reconstruction; circular camera movements; epipolar image analysis algorithm; equidistant camera movements; horizontal camera movements; image cube trajectory analysis; image sequence; linear camera movements; occlusions; Algorithm design and analysis; Cameras; Image analysis; Image color analysis; Image reconstruction; Image sequence analysis; Image sequences; Layout; Page description languages; Piecewise linear approximation;
Conference_Titel :
Image Processing, 2003. ICIP 2003. Proceedings. 2003 International Conference on
Print_ISBN :
0-7803-7750-8
DOI :
10.1109/ICIP.2003.1247340