Apparatuses and methods for polarization based surface normal imaging
AssigneesSony Semiconductor Solutions Corporation, University of Zurich
InventorsManasi MUGLIKAR, Diederik Paul MOEYS, Davide SCARAMUZZA
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Abstract
The present disclosure relates to an apparatus for polarization-based surface normal imaging, the apparatus comprising a linear polarizer configured to rotate and to subsequently pass light from a scene, an event-based vision sensor. EVS, configured to detect a set of events of the scene based on the rotation angle of the linear polarizer, and a shape estimation processor configured to compute surface normal information of the scene based on the set of events and the corresponding rotation angle of the polarizer.
Claims9
Apparatus for shape measurement of a scene, the apparatus comprising
- a rotatable linear polarizer configured to pass light from the scene at a first rotation angle of the linear polarizer and to subsequently pass light from the scene at a second rotation angle of the linear polarizer;
- an event-based vision sensor, EVS, configured to detect a first set of events associated with the passed light of the first rotation angle of the linear polarizer and to subsequently detect a second set of events associated with the passed light of the second rotation angle of the linear polarizer;
- a shape estimation processor configured to compute surface normal information of the scene based on the first and second set of events and the corresponding first and second rotation angles of the linear polarizer.
Method for shape measurement of a scene, the method comprising passing light from the scene at a first rotation angle of a rotatable linear polarizer;
- detecting, with an EVS, a first set of events associated with the passed light of the first rotation angle of the linear polarizer;
- passing light from the scene at a second rotation angle of the linear polarizer;
- detecting, with the EVS, a second set of events associated with the passed light of the second rotation angle of the linear polarizer;
- computing surface normal information of one or more objects in the scene based on the first and second set of events and the corresponding first and second rotation angles of the linear polarizer.
Dependencies are inferred from the claim text.