Systems and methods for comprehensive focal tomography

摘要

A method and system for forming a three-dimensional image of a three-dimensional scene using a two-dimensional image sensor are disclosed. Formation of a three-dimensional image is enabled by locating a coded aperture in an image field provided by a collector lens, wherein the coded aperture modulates the image field to form a modulated image at the image sensor. The three-dimensional image is reconstructed by deconvolving the modulation code from the image data, thereby enabling high-resolution images to be formed at a plurality of focal ranges.

主权项

1. A method for imaging a three-dimensional scene, the method comprising:
providing a reference structure that is physically adapted to modulate an image field, wherein the reference structure includes a first element that is selected from the group consisting of a two-dimensional coded aperture, a volume distribution of lenslets having a size based on the first resolution, an array of lenslets that are focused at a plurality of focal ranges within the focal volume, a three-dimensional array of optical fibers, a volume hologram, a volume distribution of particles, and a three-dimensional graded index material; modulating the image field via the reference structure to provide a modulated image; receiving the modulated image at a camera comprising a focal-plane array; generating a plurality of electrical signals based on the modulated image; and processing the plurality of electrical signals to reconstruct the image field at a plurality of focal ranges.