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.

Date of Patent:
Jul. 30, 2019

Filed:

Jul. 02, 2018
Applicant:

The United States of America, As Represented BY the Secretary of the Navy, Washington, DC (US);

Inventors:

Carlo C. Zuniga Zamalloa, Urbana, IL (US);

Blake J. Landry, St. Martinville, LA (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06T 7/246 (2017.01); G06K 9/62 (2006.01); G06K 9/46 (2006.01); H04N 13/15 (2018.01); H04N 13/257 (2018.01); H04N 13/167 (2018.01); G06T 17/05 (2011.01);
U.S. Cl.
CPC ...
G06T 7/251 (2017.01); G06K 9/6276 (2013.01); G06T 17/05 (2013.01); H04N 13/15 (2018.05); H04N 13/167 (2018.05); H04N 13/257 (2018.05); G06K 9/4642 (2013.01); G06K 9/4671 (2013.01); G06K 9/6215 (2013.01); G06T 2207/10021 (2013.01); G06T 2207/30192 (2013.01);
Abstract

Embodiments relate to characterizing a water flow. Initially, a camera targeted at the water flow obtains images. An image pyramid is generated for each image, and a first level of each image pyramid is tiled at an initial scale to identify initial features. The initial features are matched across the first level of the image pyramids at a pixel-level to obtain a first set of feature displacements. A second level of each image pyramid is tiled at a decreased scale to identify a scaled set of features. The scaled features are matched across the second level of the image pyramids at the pixel-level to obtain a second set of feature displacements. Optical flow algorithms are applied to modify each feature displacement to account for a corresponding subpixel registration. A stereo reconstruction is applied to the feature displacements to generate a three dimensional (3D) displacement map.


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Zamalloa, Carlo C. Zuniga. (2019). Autonomous characterization of water flow from surface water velocity (U.S. Patent No. 10366500). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10366500

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