Incoherent Fourier ptychographic super-resolution imaging system with priors

US11689821B2 · kind B2 · utility

Assignee

• The Government of the United States of America, as represented by the Secretary of the Navy · US

Inventors

• Shawn Divitt · Gaithersburg, US
• Samuel Park · McLean, US

Key dates

• Filing date: Jul 27, 2021
• Grant date: Jun 27, 2023
• Expiry date: Dec 21, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N23/951
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

An Incoherent Fourier ptychographic imaging system. Multiple known light patterns are projected sequentially onto a target and images of the combined pattern and target are recorded by a camera, with the images being processed using an optical transfer function (OTF). The camera and projection system are aligned along the same optical axis. The known illumination patterns and the optical transfer function (OTF) are combined in an iterative algorithm to generate an image with resolution greater than would be achieved by uniform illumination of the target and imaging with the camera.