The University of North Carolina at Charlotte

Mehrdad Abolbashari

Faramarz Farahi

Gelareh Babaie

A measurement method and system include illuminating an object to be measured with light at two different wavelengths and an incident angle; capturing an image of the object; detecting a frequency of an interference pattern from the image using Fractional Bi-Spectrum Analysis; and calculating a thickness of the object based on the Fractional Bi-Spectrum Analysis. The thickness is calculated based on a relationship between the thickness and the frequency of the interference pattern. The Fractional Bi-Spectrum Analysis is performed on a linear medium with the two different wavelengths being known.

Noise reduction techniques, fractional bi-spectrum and fractional cross-correlation, and applications

The present disclosure provides wavelength discriminating imaging systems and methods that spatially separate (over different depths) the wavelength constituents of an image using a dispersive lens system or element, such that this spectral information may be exploited and used. The wavelength constituents of an image are deconstructed and identified over different depths using a dispersive lens system or element.

Wavelength discriminating imaging systems and methods

The present disclosure provides wavelength discriminating imaging systems and methods that spatially separate (over different depths) the wavelength constituents of an image using a dispersive element or lens, such that this spectral information may be exploited and used. The wavelength constituents of an image are deconstructed and identified over different depths using the dispersive element or lens.

Selective wavelength imaging systems and methods

The present disclosure provides distributed sensor grid, surface, and skin systems and methods that utilize compressive sampling systems and methods for reading and processing the outputs of sensor arrays (serial and/or parallel) such that increased speed can be achieved. These sensor arrays can be functionalized or sensitized in any desired manner and functions are derived from the outputs, as opposed to individual data points. The sensor arrays can be made in the form of a textile, a fiber optic network, a MEMS network, or a CMOS camera, for example. In general, in accordance with the systems and methods of the present disclosure, a Code is applied to a distributed sensor as part of the compressive sampling technique and derives the functions.

Distributed sensor grid, surface, and skin systems and methods

Novel measurement techniques based on moir&#xe9; techniques and optical frequency conversion. For example, in the IR realm, the configuration can be any moir&#xe9; configuration, the detector is an IR detector, and the light source can be at any wavelength. The optical configuration, the detector, and the type of light source depend on the physical properties of object/scene and the parameter(s) to be measured.

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Charlotte, NC, United States of America

Mehrdad Abolbashari