Patent ID: 7245326
Filing Date: 2007-07-17
Classification: H04N

Abstract:
1. A method for generating an interpolated picture element (pixel) at a target pixel position between two successive lines of an interlace scan image, comprising the steps of: determining a first gradient intensity value in a first direction in a predetermined region about the target pixel position and a first magnitude value for the determined first gradient intensity value; determining a second gradient intensity value in a second direction in the predetermined region about the target pixel position, the second direction being different from the first direction, and a second magnitude value for the determined second gradient intensity value; determining if at least one of the first magnitude value and the second magnitude value exceeds a predetermined threshold to define the target pixel location as an edge pixel location; if the target pixel location is an edge pixel location, if the target pixel location is an edge pixel location, interpolating a value for the target pixel location from the values of pixels in the interlace scan image adjacent to the target pixel and lying along the determined approximate angle.