System and method for depth from defocus imaging
US8340456B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2011 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Oct 13, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V2201/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging system includes a positionable device configured to axially shift an image plane, wherein the image plane is generated from photons emanating from an object and passing through a lens, a detector plane positioned to receive the photons of the object that pass through the lens, and a computer programmed to characterize the lens as a mathematical function, acquire two or more elemental images of the object with the image plane of each elemental image at different axial positions with respect to the detector plane, determine a focused distance of the object from the lens, based on the characterization of the lens and based on the two or more elemental images acquired, and generate a depth map of the object based on the determined distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.