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Methods and apparatus for performing fast mode decisions in video codecs.

A coding mode and codec technology, applied in the field of video coding and decoding, digital image processing, can solve the problems of consuming hardware resources, limited hardware resources, large number of instructions, etc.

Active Publication Date: 2007-08-08
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The number of instructions (measured in MIPS (million instructions per second)) required to implement the compression is large and can consume hardware resources that could otherwise be allocated to other applications
Because the compression is typically performed within small portable electronic devices, the hardware resources to implement these compression techniques may be limited

Method used

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  • Methods and apparatus for performing fast mode decisions in video codecs.
  • Methods and apparatus for performing fast mode decisions in video codecs.
  • Methods and apparatus for performing fast mode decisions in video codecs.

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Embodiment Construction

[0017] Newer generations of video compression standards employ a video phenomenon to reduce encoding complexity. Video is simply a series of still images called frames that appear in rapid succession in time. It may be observed that some video frames exhibit spatial similarity and correlation with neighboring frames, while some video frames also exhibit temporal similarity with neighboring frames. Therefore, most video compression standards implement different encoding techniques for "intra-coded frames" (frames whose spatial redundancy is detected) and "inter-coded frames" (frames whose temporal redundancy is detected). Predictive coding is often used for frames containing spatial or temporal redundancy. For ease of illustration, intra-coded frames will be referred to herein as I-frames and inter-coded frames will be referred to herein as P-frames. To encode I-frames and P-frames, a typical video codec will process macroblocks of an image frame rather than the entirety of t...

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Abstract

Methods and apparatus are presented for reducing the computational complexity of coding mode decisions by exploiting the correlations across spatially and / or temporally close coding mode decisions. A mode decision for a current macroblock is based on the mode decisions of spatially and / or temporally close macroblocks.

Description

[0001] Claim of priority under 35 U.S.C. §119 [0002] This patent application claims to be based on Serial No. 60 / 552,156, filed March 11, 2004, entitled "Low-Complexity Intra / inter Mode Decision for Video Coding" Priority to the Provisional Application is assigned to the assignee of the present invention and is hereby expressly incorporated herein by reference. technical field [0003] The present invention relates generally to the field of digital image processing, and more particularly to the field of video encoding and decoding. Background technique [0004] Video transmission via wireless or wired communication channels has become possible with the development of increased data capacity of communication channels. Also, various standards have been developed to facilitate video transmission and reception using electronic devices with digital storage media, such as mobile phones, personal computers, personal digital assistants (PDAs), and other electronic devices. Some...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/50
CPCH04N19/00375H04N19/00781H04N19/00278H04N19/00042H04N19/00236H04N19/00169H04N19/00206H04N19/00139H04N19/0003H04N19/00369H04N19/00036H04N19/0023H04N19/197H04N19/176H04N19/196H04N19/61H04N19/11H04N19/107H04N19/109H04N19/136H04N19/146H04N19/156H04N19/162H04N19/164
Inventor 梁宜哈立德·希勒米·厄勒-马列
Owner QUALCOMM INC