Ram C. Naidu

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Various imaging sensors have been used for luggage screening for explosive detection. Recent developments in dual energy X-ray volumetric computed tomography (CT) have demonstrated its advantages over other imaging sensors for luggage screening. These advantages include higher performance in automatic explosive detection, effectiveness for weapon detection,(More)
Single energy computed tomography (CT) scanners use measurements of densities to detect explosives in luggage. It is desirable to apply dual energy techniques to these CT scanners to obtain atomic number measurements to reduce false alarm rates. However, the direct application of existing dual energy techniques has practical problems, such as, approximation(More)
We present an algorithm to reconstruct helical cone beam computed tomography (CT) data acquired at variable pitch. The algorithm extracts a halfscan segment of projections using an extended version of the advanced single slice rebinning (ASSR) algorithm. ASSR rebins constant pitch cone beam data to fan beam projections that approximately lie on a plane that(More)
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