Scannerless loss modulated flash color range imaging
US7495748B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2007 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Oct 30, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C3/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Scannerless loss modulated flash color range imaging methods and apparatus are disclosed for producing three dimensional (3D) images of a target within a scene. Apparatus and methods according to the present invention comprise a light source providing at least three wavelengths (passbands) of illumination that are each loss modulated, phase delayed and simultaneously directed to illuminate the target. Phase delayed light backscattered from the target is spectrally filtered, demodulated and imaged by a planar detector array. Images of the intensity distributions for the selected wavelengths are obtained under modulated and unmodulated (dc) illumination of the target, and the information contained in the images combined to produce a 3D image of the target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.