3D scene capture using passive IR and focus diversity

Kevin Harding

doi:10.1117/12.2584761

12 April 2021 3D scene capture using passive IR and focus diversity

Kevin Harding

Proceedings Volume 11732, Dimensional Optical Metrology and Inspection for Practical Applications X; 1173206 (2021) https://doi.org/10.1117/12.2584761
Event: SPIE Defense + Commercial Sensing, 2021, Online Only

Abstract

There are many methods used today to capture general 3D scene information including laser radar, structured light and stereo imaging. For a wide, general scene, laser radar and structured light projection requires active illumination which for a wide, outdoor view may be impractical, either because of the high-power light needed, the desired to be discrete, or just to time needed to scan a wide scene using a beam or pattern that does not blind persons in the field. Stereo can use passive light, but requires a larger stereo capture separation (multiple camera separation) and good correlation points that may be had to find. This paper will present the use of passive IR imaging along with focus diversity to capture a wide scene with just a few image fields. Similar work has been reported for capturing fingerprints and hand-prints at high resolution as well as face information at large distances. The paper will review the background and theory and present some illustrative results.

Conference Presentation

Citation Download Citation

Kevin Harding "3D scene capture using passive IR and focus diversity", Proc. SPIE 11732, Dimensional Optical Metrology and Inspection for Practical Applications X, 1173206 (12 April 2021); https://doi.org/10.1117/12.2584761

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