The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2013
Filed:
Jul. 21, 2009
Mingtao Zhao, Durham, NC (US);
Hansford Hendargo, Durham, NC (US);
Joseph a Izatt, Raleigh, NC (US);
Mingtao Zhao, Durham, NC (US);
Hansford Hendargo, Durham, NC (US);
Joseph A Izatt, Raleigh, NC (US);
Duke University, Durham, NC (US);
Abstract
In accordance with this disclosure, methods, systems, and computer readable media for synthetic wavelength-based phase unwrapping in optical coherence tomography are provided. Synthetic wavelength phase unwrapping can be applied to OCT data and can correctly resolve sample motions that are larger than λ/2. A method for phase unwrapping of an OCT signal can include acquiring raw OCT signal data, interpolating and processing the OCT signal data to obtain a DC spectrum, comparing the raw OCT signal data to the DC spectrum to generate an interference signal, applying Gaussian windows to the interference signal to generate a two separate signals, extracting phase information from the two signals, and comparing the phase information of the two signals to produce unwrapped phase data. A value of 2π can be added to the phase data if the difference between the phase information of the two signals is less than zero.