Study unveils the dual nature of a young stellar object

Astronomers from the Aryabhatta Research Institute of Observational Sciences (ARIES) in India and elsewhere have conducted a ...
IEEE

Reconstructing 3-D FRI shapes from tomographic projections at unknown angles

Abstract: Conventional methods for 3-D reconstruction from 2-D tomographic projections require prior knowledge of projection orientation. Without such information, reconstruction typically becomes a ...
Archaeology

Spheres of Influence

Intricately carved stone balls of unknown purpose, which date to the third millennium B.C. and have been discovered throughout the British Isles—though most frequently in northeast Scotland—continue ...
IEEE

Perfect Reconstruction of Classes of Non-Bandlimited Signals from Projections with Unknown Angles

Abstract: In this paper, we consider the 2D tomography problem for a finite number of point sources, where the line integral projections are taken at unknown angles. We address the problem of ...