Optics: measuring and testing – By polarized light examination – With polariscopes
Reexamination Certificate
2007-10-15
2009-12-08
Lauchman, L. G (Department: 2877)
Optics: measuring and testing
By polarized light examination
With polariscopes
C358S302000, C358S302000
Reexamination Certificate
active
07630077
ABSTRACT:
An underwater imaging system includes an underwater imaging polarimeter that captures images of the water surface. The captured images are indicative of the captured light, and are equivalent to four-component Stokes vector S=(I,Q,U,V) data. Advantageously, the passive imaging technique of the present invention utilizes polarmetric data. In contrast, conventional optical remote sensing techniques rely on light amplitude and frequency to carry information about the scattering surface. The imaging technique of the present invention exploits these properties, as well as the polarization properties of light to sense information about the scattering media. The two-dimensional slope field of surface wave can be recovered from a distance without interfering with the fluid dynamics of the air or water. By employing the physics of light scattering by a specular surface, the geometry of the surface can be found by measuring the polarimetric properties of the reflected and/or refracted light. The derived two-dimensional slope field in then used to remove the image distortion caused by light passing through the wavy surface. The undistorted images have the appearance of images taken through a flat water surface.
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Oleg Konstantinov: “Measurements of sea level, wave height and slopes by analysis of sea surface image sequence from polarization camera”, 2003.
Corrada-Emmanuel Andres
Schultz Howard
Lauchman L. G
O'Shea Getz P.C.
University of Massachusetts
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