Patent ID: 9639756
Date: 2017-05-02
CPC Classifications: G06K

Claim:
1. A method for deglinting comprising obtaining a first pair of images, R({right arrow over (x)}) and S({right arrow over (x)}), where {right arrow over (x)} is the two-dimensional (2D) spatial coordinate for pixels in each image, wherein a majority of pixel intensities have a near-linear relationship to surface wave height of a body of water, wherein the two images of the first pair are spatially registered, and wherein there is a time interval between the two images of the first pair; calculating a deglinted image using one of where F F {right arrow over (k)} is the 2D frequency coordinate for a 2D Fourier transform of an image, F W({right arrow over (k)}) is a wavenumber mask restricting subtraction to wavenumbers with significant wave energy, * is the convolution operator, β({right arrow over (k)}) is the ratio of the ocean surface reflected radiance in S relative to the radiance in R, which may be a constant or a function of {right arrow over (k)}, b({right arrow over (x)}) is also the ratio of ocean surface reflected radiance in S relative to the radiance in R, which may be a constant or a function of {right arrow over (x)}, Φ ψ*R({right arrow over (x)}) propagates waves in R({right arrow over (x)}) to the time of S({right arrow over (x)}), Φ printing said deglinted image S′({right arrow over (x)}) or displaying said deglinted image S′({right arrow over (x)}) on an image display device.