Optic flow modeling under shifting center of zoom

Bijan G. Mobasseri; Siva Doraiswamy

doi:10.1117/12.198982

9 January 1995 Optic flow modeling under shifting center of zoom

Bijan G. Mobasseri, Siva Doraiswamy

Proceedings Volume 2352, Mobile Robots IX; (1995) https://doi.org/10.1117/12.198982
Event: Photonics for Industrial Applications, 1994, Boston, MA, United States

Abstract

It has been demonstrated recently that images obtained under varying focal lengths contain information on the 3D structure of the scene. This depth-from-zoom approach relies on the knowledge of `center of zoom'. Under zoom, image flow expands radially outward from the image center. In real lenses, however, this center is itself moving on a trajectory determined by the zoom action as well as lens manufacture. Therefore, optic flow vectors will follow an arbitrary curvilinear path in the image plane. In this paper we develop a general model for the determination of image flow given a corresponding locus for the center of zoom.

Citation Download Citation

Bijan G. Mobasseri and Siva Doraiswamy "Optic flow modeling under shifting center of zoom", Proc. SPIE 2352, Mobile Robots IX, (9 January 1995); https://doi.org/10.1117/12.198982

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