Patent ID: 7483577
Filing Date: 2009-01-27
Classification: G09G,H04N

Abstract:
1. A method for processing a compressed input video, comprising: decoding the compressed input video to produce pixels of an interlaced picture, the interlaced picture having a first spatial resolution, and a top-field and a bottom-field; producing, for each macroblock of pixels in the interlaced picture, a macroblock coding type, in which the macroblock coding type includes a macroblock motion type and a macroblock transform type; filtering adaptively the top-field and the bottom-field of the interlaced picture according to the macroblock coding type and the macroblock transform type to produce a progressive picture with a second spatial resolution less than the first spatial resolution, in which the filtering jointly performs de-interlacing and downsampling of the interlaced picture; wherein, the filtering includes frame-based filtering and field-based filtering, in which the filtering is frame-based when the macroblock coding type is inter-coding and the macroblock motion type is frame-based, and an absolute value of motion vectors corresponding to the macroblock are greater than a threshold; and encoding the progressive picture.