Patent ID: 6304664
Filing Date: 2001-10-16
Classification: G06K,G06T

Abstract:
A multispectral imagery method suitable for use in detecting small low contrast objects present in the ocean, the multispectral imagery method operable to decrease detection interference arising from upwelling and reflected light information present in pixel based image data, the multispectral imagery method comprising the operations of:providing an image data including a plurality of pixels;applying a two-component de-glinting process to the image data, wherein the two component de-glinting process comprises the operations of:estimating a spectrum of component 1 from the brightest pixels in said image data;estimating a spectrum of component 2 from the dimmest pixels in said image data; andsubtracting the amounts of said spectrum of component 1 and said spectrum of component 2 present in each said pixel.