Patent Number: 7,356,081

Title: Bidirectionally predicted pictures or video object planes for efficient and flexible video coding

Abstract: A method is provided for decoding a bit stream representing an image that has been encoded. The method includes the steps of: performing an entropy decoding of the bit stream to form a plurality of transform coefficients and a plurality of motion vectors; performing an inverse transformation on the plurality of transform coefficients to form a plurality of error blocks; determining a plurality of predicted blocks based on bidirectional motion estimation that employs the motion vectors, wherein the bidirectional motion estimation includes a direct prediction mode and a second prediction mode; and, adding the plurality of error blocks to the plurality of predicted blocks to form the image. The second prediction mode may include forward, backward, and interpolated prediction modes.

Inventors: Haskell; Barin Geoffry (Tinton Falls, NJ), Puri; Atul (Riverdale, NY), Schmidt; Robert Louis (Howell, NJ)

Assignee: AT&T Corp.

International Classification: H04N 7/12 (20060101); G06K 9/36 (20060101)

Expiration Date: 2020-04-08 0:00:00