Patent ID: 8456570

Claim:
A method for a motion detection in an interlaced field sequence, comprising: selecting two initial fields from the interlaced field sequence, each of said two initial fields having different scan lines, interpolating each of said two initial fields to generate two respective new fields, said new fields having raster lines that are congruent, a number of the raster lines being larger than a number of the scan lines, generating a value of a pixel of each new field using pixel values of at least two scan lines of a corresponding initial field of the interlaced field sequence, the initial field surrounding said pixel, and performing a motion detection based on the new fields; and obtaining a first set of raster lines by shifting up scan lines of one initial field by half a distance between two scan lines and obtaining a second set of raster lines by shifting down the same scan lines the initial field by half of said distance between two scan lines.