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1. (WO2015116307) A METHOD FOR ELECTRONIC ZOOM WITH SUB-PIXEL OFFSET

Pub. No.:    WO/2015/116307    International Application No.:    PCT/US2014/066451
Publication Date: Fri Aug 07 01:59:59 CEST 2015 International Filing Date: Thu Nov 20 00:59:59 CET 2014
IPC: G06T 3/40
Applicants: RAYTHEON COMPANY
Inventors: GOHLKE, Mark
BAKER, Christopher J.
JACOBS, Trent A.
Title: A METHOD FOR ELECTRONIC ZOOM WITH SUB-PIXEL OFFSET
Abstract:
A system and method for interpolating between pixels of an image for providing zoom and pan features. A piecewise cubic spline is used to find the values of each of four provisional interpolation points in each of four rows of an image and, similarly, a piecewise cubic spline is used to interpolate between the provisional interpolation points to find the value of a point in the output image. Boundary conditions used to constrain the coefficients of the piecewise cubic spline provide enhanced quality in the output image.