SPATIOTEMPORAL PREDICTION FOR BIDIRECTIONALLY PREDICTIVE (B) PICTURES AND MOTION VECTOR PREDICTION FOR MULTI-PICTURE REFERENCE MOTION COMPENSATION

摘要

Several improvements for use with Bidirectionally Predictive (B) pictures within a video sequence are provided. In certain improvements Direct Mode encoding and/or Motion Vector Prediction are enhanced using spatial prediction techniques. In other improvements Motion Vector prediction includes temporal distance and subblock information, for example, for more accurate prediction. Such improvements and other presented herein significantly improve the performance of any applicable video coding system/logic.

主权项

1. A method for use in encoding video data within a sequence of video frames, the method comprising:
identifying at least a portion of at least one video frame to be a Bidirectionally Predictive (B) picture; and selectively encoding said B picture using at least spatial prediction to encode at least one motion parameter associated with said B picture.