Louis J. Denes

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In October 2001 we started to collect hyperspectral face images covering the spectral range from 450nm to 1100 nm. To date the database contains 54 diverse faces at multiple sessions over a period of about two months. The data was obtained using a prototype (limited performance) CMU-developed spectropolarimetric camera. We present some experimental results(More)
We have built a portable spectro-polarimetric machine vision system that operates at video frame rates. Our system contains only electronically controllable components, including an imaging acousto-optic tunable filter (AOTF), a phase retarder, acceptance and imaging optics, and a standard CCD-based camera. The device operates like an ordinary camera,(More)
INTRODUCTION The assessment of joints with active arthritis is a core component of widely used outcome measures. However, substantial variability exists within and across examiners in assessment of these active joint counts. Swelling and temperature changes, two qualities estimated during active joint counts, are amenable to quantification using noncontact(More)
A prototype portable hyperspectral imager that operates in the visible and near-infrared ranges of the electromagnetic spectrum was field tested at an open-pit mine. The tests were sponsored by the Spokane Research Laboratory, National Institute for Occupational Safety and Health, as part of an investigation of remote sensing technologies for use in(More)
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