Patent ID: 8144778
Filing Date: 2012-03-27
Classification: G06T,H04N

Abstract:
1. A method of converting an input video sequence at a first frame rate to an output video sequence at a second frame rate, comprising the steps of: obtaining a current video frame and a previous video frame from the input video sequence; generating a first motion field comprising a first plurality of motion vectors that predict the trajectories of blocks moving from the previous video frame to the current video frame; generating a second motion field from the first motion field, the second motion field comprising a second plurality of motion vectors that predict the trajectories of blocks moving between the previous video frame and an interpolated video frame and moving between the interpolated video frame and the current video frame; and constructing an interpolated video frame from pixel data in the current and previous video frames and from the second plurality of motion vectors; wherein generating the first motion field comprises the steps of: