Three-dimensional imaging using a single camera

Patent metadata

Field	Value
Publication number	US-8976263-B2
Application number	US-201314019072-A
Country	US
Kind code	B2
Filing date	Sep 5, 2013
Priority date	Jul 24, 2008
Publication date	Mar 10, 2015
Grant date	Mar 10, 2015

Abstract

The attenuation and other optical properties of a medium are exploited to measure a thickness of the medium between a sensor and a target surface. Disclosed herein are various mediums, arrangements of hardware, and processing techniques that can be used to capture these thickness measurements and obtain three-dimensional images of the target surface in a variety of imaging contexts. This includes general techniques for imaging interior/concave surfaces as well as exterior/convex surfaces, as well as specific adaptations of these techniques to imaging ear canals, human dentition, and so forth.

First claim

What is claimed is:

1. A system comprising:
an inflatable membrane having a surface including a fluorescent substance that fluoresces over a range of wavelengths;
a supply of a medium that absorbs a first wavelength of light within the range of wavelengths more than a second wavelength of light within the range of wavelengths, the supply being coupled to the inflatable membrane to permit selective delivery of the medium into the inflatable membrane;
a light source positioned w…

Assignees

• Massachusetts Inst Technology

Inventors

• Hart Douglas P
• Frigerio Federico
• Marini Davide M

Classifications

• G01N2021/6439

  Physics · mapped topic

• A61B5/0088

  Human Necessities · mapped topic

• G01N2021/6491

  Physics · mapped topic

• A61B1/043

  Human Necessities · mapped topic

• G01B11/06

  Physics · mapped topic