Techniques For Resource Conservation During Performance Of Intra Block Copy Prediction Searches

a technology of resource conservation and prediction search, applied in the field of video coding, can solve the problems of inefficient video coding techniques, large memory and/or bandwidth consumption, complex algorithms,

Inactive Publication Date: 2016-12-08
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional video coding techniques are inefficient in that they are...

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  • Techniques For Resource Conservation During Performance Of Intra Block Copy Prediction Searches
  • Techniques For Resource Conservation During Performance Of Intra Block Copy Prediction Searches
  • Techniques For Resource Conservation During Performance Of Intra Block Copy Prediction Searches

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Embodiment Construction

[0015]Methods and systems of the present disclosure provide techniques for video coding, including but not limited to screen content coding. In an embodiment, techniques for intra block copying (IBC) define a search area of previously-coded blocks in the picture, tile, or slice currently being encoded, that can be used for prediction of a block that is currently being coded. The search area may be defined by a height and / or a number of preceding blocks. The methods and systems of the present disclosure may improve efficiency of intra prediction by reducing space used for memory storage and computational complexity. The same concepts can also enable an encoder or decoder to better schedule / pipeline some processing components, such as in-loop deblocking and the sample adaptive offset (SAO) operation, given the information that they provide. In another embodiment, techniques for deblocking filtering (DBF) provide improved chroma DBF by optionally applying and controlling a different, e...

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Abstract

Methods are described for encoding and decoding blocks of image data using intra block copying (IBC). A source block for intra block copying is selected from a source region of a current image that is closer to the current block than a threshold, wherein the source region does not include a portion of the current image that is further from the current block than the threshold.

Description

CLAIM FOR PRIORITY[0001]This application claims benefit under 35 U.S.C. §119(e) of Provisional U.S. patent application No. 62 / 170,373, filed Jun. 3, 2015, the contents of which are incorporated herein by reference in its entirety.BACKGROUND[0002]The present disclosure relates to video coding techniques. In particular, the present disclosure relates to video coding, such as, but not limited to, the case of screen content coding, i.e. coding of screen content video. Screen content may include a mixture of content such as video, text, and graphics and, in some cases, non-camera captured content. In one aspect, the present disclosure relates to intra block copying (IBC). In another aspect, the present disclosure relates to deblocking filtering (DBF).[0003]Modern video codecs such as MPEG-4 AVC / H.264 or HEVC (currently published as ISO / IEC 23008-2 MPEG-H Part 2 and ITU-T H.265) may include techniques such as IBC and deblock filtering to handle video coding, including screen content codin...

Claims

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Application Information

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IPC IPC(8): H04N19/593H04N19/182H04N19/176
CPCH04N19/593H04N19/182H04N19/176H04N19/117H04N19/156H04N19/174H04N19/44
Inventor TOURAPIS, ALEXANDROS MICHAELSINGER, DAVID WILLIAMGUO, HAITAOWU, HSI-JUNGCISMAS, SORIN C.YANG, XIAOHUASU, YEPINGZHANG, DAZHONG
Owner APPLE INC
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