7 June 2013 Moving beyond flat earth: dense 3D scene reconstruction from a single FL-LWIR camera
Author Affiliations +
Abstract
In previous work an automatic detection system for locating buried explosive hazards in forward-looking longwave infrared (FL-LWIR) and forward-looking ground penetrating radar (FL-GPR) data was presented. This system consists of an ensemble of trainable size-contrast filters prescreener coupled with a secondary classification step which extracts cell-structured image space features, such as local binary patterns (LBP), histogram of oriented gradients (HOG), and edge histogram descriptors (EHD), from multiple looks and classifies the resulting feature vectors using a support vector machine. Previously, this system performed image space to UTM coordinate mapping under a flat earth assumption. This limited its applicability to flat terrain and short standoff distances. This paper demonstrates a technique for dense 3D scene reconstruction from a single vehicle mounted FL-LWIR camera. This technique utilizes multiple views and standard stereo vision algorithms such as polar rectification and optimal correction. Results for the detection algorithm using this 3D scene reconstruction approach on data from recent collections at an arid US Army test site are presented. These results are compared to those obtained under the flat earth assumption, with special focus on rougher terrain and longer standoff distance than in previous experiments. The most recent collection also allowed comparison between uncooled and cooled FL-LWIR cameras for buried explosive hazard detection.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
K. Stone, K. Stone, J. M. Keller, J. M. Keller, D. T. Anderson, D. T. Anderson, "Moving beyond flat earth: dense 3D scene reconstruction from a single FL-LWIR camera", Proc. SPIE 8709, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVIII, 87091C (7 June 2013); doi: 10.1117/12.2014967; https://doi.org/10.1117/12.2014967
PROCEEDINGS
15 PAGES


SHARE
RELATED CONTENT

Design of three-dimensional imaging system based on SFM
Proceedings of SPIE (March 07 2017)
Model-based object classification using fused data
Proceedings of SPIE (April 29 1992)
Detection of surfaces for projection of texture
Proceedings of SPIE (May 28 2007)
Three-dimensional imaging with the Argus sensor array
Proceedings of SPIE (November 26 2002)

Back to Top