May 25, 2011
Conference Paper

Calibration, Reconstruction, and Rendering of Cylindrical Millimeter-Wave Image Data

Abstract

Cylindrical millimeter-wave imaging systems and technology have been under development at the Pacific Northwest National Laboratory for many years. This technology has been commercialized, and systems are currently being deployed widely across the United States and internationally. These systems are effective at screening for concealed items of all types, however, new sensor designs, image reconstruction techniques, and image rendering algorithms, could potentially improve performance. At PNNL, a number of specific techniques have been developed recently to improve cylindrical imaging methods including wideband techniques, combining data from full 360 degree scans, polarimetric imaging techniques, calibration methods, and 3-D data visualization techniques. Many of these techniques exploit the three-dimensionality of the cylindrical imaging technique by optimizing the depth resolution of the system and using this information to enhance detection. Other techniques, such as polarimetric methods, exploit scattering physics of the millimeter-wave interaction with concealed targets on the body. In this paper, calibration, reconstruction, and three-dimensional rendering techniques will be described that optimize the depth information in these images and the display of the images to the operator.

Revised: October 15, 2012 | Published: May 25, 2011

Citation

Sheen D.M., and T.E. Hall. 2011. Calibration, Reconstruction, and Rendering of Cylindrical Millimeter-Wave Image Data. In Passive Millimeter-Wave Imaging Technology XIV, April 25, 2011, Orlando, Florida. Proceedings of the SPIE, edited by DA Wikner and AR Luukanen, 8022, Paper No. 80220H. Bellingham, Washington:SPIE. PNNL-SA-78822. doi:10.1117/12.887922