Patent ID: 6771835
Filing Date: 2004-08-03
Classification: G06T,H04N

Abstract:
An interpolation system comprising:an edge detector for detecting edge information among pixels from a video signal applied through an input terminal; an edge direction modifier for converting the edge information detected by the edge detector on the basis of a center point among peripheral pixels of an interpolation position and outputting modified edge information; a near-edge coefficient generator for converting the coordinates of the interpolation position based on the modified edge information to generate a converted interpolation position, generating edge patterns corresponding to the converted interpolation position, and generating a plurality of two-dimensional interpolation coefficients in response to predetermined one-dimensional non-linear interpolation filter coefficients; a filter coefficient generator for generating the one-dimensional non-linear interpolation filter coefficients in response to the coordinates of the converted interpolation position, the edge patterns and predetermined one-dimensional filter coefficients; and a non-linear interpolation unit for multiplying data values associated with the peripheral pixels by the plurality of two-dimensional non-linear interpolation coefficients to perform non-linear interpolation.