Systems and methods for efficient spatial intra predictabilty determination (or assessment)

Abstract

Techniques for efficient determination of a macroblock's spatial predictability quality with respect to the H.264 specification are provided. A device comprises a processor operable to estimate a first subset of spatial prediction modes based on a first pixel subset of a current subblock of an intra-frame. The processor is also operable to estimate a second subset of spatial prediction modes based on a second pixel subset of the current subblock. The first subset of prediction modes is different from the second subset of prediction modes.

Description

[0001] This application claims the rights of U.S. Provisional Application No. 60 / 871,648 filed on December 22, 2006, the entire content of which is incorporated herein by reference. Technical field [0002] The present invention generally relates to video encoding and decoding, and more specifically, to a technique for efficiently determining the spatial predictability quality of macroblocks relative to the H.264 specification. Background technique [0003] Independently decodable intra-coded frames are the most common forms of random access to video signals. The MPEG-x and H.26x standards use what is called a group of pictures (GOP), which includes intra-coded frames (also called I-frames) and temporarily predicted P-frames or I-frames in a reference GOP and / Or bi-predicted B frames of other P and / or B frames. A longer GOP is ideal for an increased compression ratio, but a shorter GOP allows faster acquisition and random access. Increasing the number of I frames will allow fa...

AI Technical Summary

Problems solved by technology

However, these algorithms are computationally complex and, in particular, algorithms based on edge detection produce estimates with a relatively high probability of error

[0005] Known spati

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