Patent ID: 6930728
Filing Date: 2005-08-16
Classification: H04N

Abstract:
1. A scan conversion apparatus comprising: at least one field buffer; at least one field motion estimator receiving image input of interlaced scanning format from said at least one field buffer, said image input including a current field and at least one reference field; at least one field motion compensator operatively coupled between said at least one field buffer and said at least one field motion estimator, said at least one field motion compensator adapted to restore at least one missing line of said current field using motion information from an optimally spaced adjacent reference field when said optimally spaced adjacent reference field is unevenly matched to said current field; at least one linear interpolator adapted to restore at least one missing line of said current field when said optimally spaced adjacent reference field is evenly matched to said current field; at least one edge-preserving filter operatively coupled between said at least one field motion compensator and said at least one linear interpolator, said at least one linear interpolator producing image output of progressive scanning format; at least one frame buffer adapted to store said produced image output and image input of progressive scanning format; and at least one frame motion estimator operatively coupled between said at least one frame buffer and said at least one field motion estimator and adapted to generate motion vectors between adjacent image frames.