Video processing method and device for depth extraction

摘要

The present invention provides an improved method and device for generating a depth map (112) by extracting three-dimensional depth information from the movement vectors of an encoded video bit stream (102) to display two-dimensional video sequences onto three-dimensional displays. In particular, the invention performs depth extraction (110) by means of a post-processing of the movement vectors of the inter-coded macroblocks, which have been already encoded in the video bit stream, thereby significantly reducing the heavy processing requirements associated with conventional motion estimation techniques.

主权项

1. A method of processing video images, wherein the method comprises:
receiving an encoded video bit stream of a two-dimensional video application having video images; decoding movement associated with a plurality of frames of the encoded video bit stream to extract a plurality of movement vectors by block units of the plurality of frames; generating a movement map based on the extracted plurality of movement vectors by block units of the plurality of frames; processing the movement map generated using the plurality of movement vectors by grouping block units having similar types of movement vectors into respective areas such that block units having the similar types of movement vectors are grouped together into said respective areas, wherein said block units in said respective areas comprise a respective depth information; applying a depth extraction step by integrating the depth information of the respective areas of the movement map based on the types of movement vectors associated with the block units of the video images; and generating a depth map to render two-dimensional video applications onto a three-dimensional display.