Methods and apparatus for reduced resolution partitioning

Abstract

There are provided methods and apparatus for reduced resolution partitioning. An apparatus includes an encoder (300) for encoding video data using adaptive tree-based frame partitioning, wherein partitions are obtained from a combination of top-down tree partitioning and bottom-up tree joining.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application 60 / 823,567, filed August 25, 2006, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates generally to video encoding and decoding, and more particularly to methods and apparatus for reduced resolution partitioning. Background technique [0004] Prior art video encoders employ adaptive block partitioning to optimally classify visual data for efficient encoding. To achieve this, most coding algorithms divide each frame on a uniform grid of given dimensions (macroblocks), and then based on the video data, these algorithms further divide each block into smaller divisions to best fit the video data. An inherent limitation of this approach is that, in existing standards such as the International Organization for Standardization / International Electrotechnical Commission (ISO / IEC) Moving Picture Exper...

AI Technical Summary

Problems solved by technology

The first problem is that encoder and decoder implementations usually need to be redesigned to cope with this structural change

The second problem is that there is a loss in the partition resolution

However, motion information is not optimal for all regions on the encoder side

Also, the shape and structure of the directly predicted region based on the direct prediction model is not controllable

Images