Task-based imaging systems
US8144208B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2010 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Sep 14, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0075
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for generating an output image of a scene is disclosed. A detector of a task-based imaging system includes a plurality of pixels, and the scene includes at least one object located at a given object distance within a range of object distances between the object and the imaging system. The method includes capturing a high resolution image of the scene, converting the high resolution image into an image spectrum of the scene, determining a defocused optical transfer function (OTF) of the imaging system over the range of object distances and determining a pixel modulation transfer function (MTF) over the plurality of pixels. The method also includes multiplying the image spectrum with the OTF and the MTF to generate a modified image spectrum of the scene, converting the modified image spectrum into a modified image of the scene, and generating the output image from the modified image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.