Patent ID: 9270985
Filing Date: 2016-02-23
CPC Classification: H04N

Claim Text:
1. A method for selecting a frame/field coding mode per frame picture, the method comprising: receiving a frame picture of a signal to be encoded; determining a sum of an absolute frame vertical pixel difference over the frame picture according to: wherein i and j are a pixel horizontal and vertical indices, X determining a sum of an absolute field vertical pixel differences over the same frame picture according to: represents a difference between even field lines in the same frame picture and represents a difference between odd field lines in the same frame picture; comparing the sum of the absolute frame vertical pixel differences with the sum of the absolute field vertical pixel difference; selecting a field coding mode for encoding the frame picture if the sum of the frame vertical pixel difference is greater than the sum of the field vertical pixel differences, else selecting a frame coding mode for encoding the frame picture.