Michael Egan (National Geospatial-Intelligence Agency)
Keywords: Imaging
Abstract:
Super-resolution of images, particularly the separation of point sources within the Rayleigh limit of an optical system, has been empirically and theoretically proved. Issues remain, however, around the ability to perform true super-resolution of structure within extended objects. Puschmann and Kneer [1] conclude that “super-resolution cannot be achieved for extended objects which are not band limited.” They do find that sharpening by contrast enhancement was possible in extended images. Examination of the theoretical work of Donoho [2] suggests the possibility of resolving linear structures under certain conditions. The resolution enhancement is only possible in the direction normal to the feature’s length vector. I discuss here the required conditions for super-resolution of these
objects and propose a modification of the Magain, Courbin and Sohy (MCS) method [3] that allows super-resolved reconstruction of linear features.
Date of Conference: September 16-19, 2008
Track: Imaging