Depth recovery through active control of focal length

Bijan G. Mobasseri; Siva Doraiswamy

doi:10.1117/12.167485

1 February 1994 Depth recovery through active control of focal length

Bijan G. Mobasseri, Siva Doraiswamy

Proceedings Volume 2058, Mobile Robots VIII; (1994) https://doi.org/10.1117/12.167485
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

In this work, we have proposed the use of flow not induced by motion but by active manipulation of the lens focal length. The sequence of images thus obtained are to a great extent equivalent to those generated by camera translation with several distinct advantages: (1) the platform undergoes no perturbation while capturing the image sequences, (2) focus of expansion (FOE) is theoretically constrained to be at the center of the image or close proximity for camera imperfection, and (3) the flow is radial and as a result the correspondence problem, so difficult elsewhere, reduces to a 1-D search problem.

Citation Download Citation

Bijan G. Mobasseri and Siva Doraiswamy "Depth recovery through active control of focal length", Proc. SPIE 2058, Mobile Robots VIII, (1 February 1994); https://doi.org/10.1117/12.167485

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