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

A technology of spatial prediction and intra-frame, applied in the field of video encoding and decoding, which can solve the problems of complex algorithm calculation, low error probability, high error probability, etc.

Inactive Publication Date: 2010-01-06
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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 spatial prediction methods generally do not provide a staged approach that minimizes computational complexity while also providing a relatively low probability of error in the estimation process

Method used

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

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Embodiment Construction

[0028] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any configuration or design described herein as "exemplary" should not necessarily be construed as preferred or advantageous over other configurations or designs, and the terms "core", "engine", "machine", "processor" and "processor" are used interchangeably. "Processing Unit".

[0029] The following detailed description is directed to some sample embodiments. However, the present invention can be embodied in many different ways as defined and covered by the claims. In this description, reference is made to the drawings, in which the same numbers are used throughout the text to denote the same parts.

[0030] The video signal may be characterized according to a series of pictures, frames, and / or fields (any of which may further include one or more segments). As used herein, the term "frame" is a broad term that can encompass one or more of frames, fields, pictures, and / or segme...

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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...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/46H04N19/11H04N19/14H04N19/176H04N19/194H04N19/59
Inventor 塞伊富拉·哈利特·奥古兹阿南德·D·苏布拉马尼亚姆
Owner QUALCOMM INC
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