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AssigneeThe United States of America as represented by the Secretary of the Navy
InventorWei Chen
Estimating the term…
A computer based method for estimating surface velocity based on a time series of at least two images of a same portion of the ocean surface by solving a heat equation having unknown parameters of heat source s and surface velocity components u and v. The images can be infrared or thermal images from the AVHRR or other images. Assign a pattern of sub-arrays with number of pixels in each sub-array sufficient to overdetermine the heat equation without the need to apply divergence and vorticity constraints. Define the heat equation for each interior pixel using bilinear interpolation at each interior based on solutions at the corner pixels. Use linear regression to solve for the unknown parameters u, v, and s for each corner pixel by minimizing total error of the heat equation in finite difference form at all pixels, and find the parameters at each remaining point with bilinear interpolation.
A computer based method for estimating surface velocity based on a time series of at least two images of a same portion of the ocean surface, with a heat equation having unknown parameters being a heat source term, an x-component of the surface velocity, and a y-component of the surface velocity, the method comprising:
A computer based method for estimating velocity based on a time series of at least two images of a same portion of the ocean surface, with an optical flow equation having unknown parameters including an x-component of the surface velocity and a y-component of the surface velocity, the method comprising:
A non-transitory computer readable medium including programmed instructions stored thereon, said instructions configured for estimating surface velocity based on a time series of at least two images of a same portion of the ocean surface, with a heat equation having unknown parameters being a heat source term, an x-component of the surface velocity, and a y-component of the surface velocity, said instructions comprising:
A computer based method for estimating velocity based on a time series of at least two images of a same portion of the ocean surface, with an optical flow equation having unknown parameters including an x-component of the surface velocity and a y-component of the surface velocity, the method comprising:
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