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Method and device for video coding

A video decoding and decoding technology, applied in the field of video decoding

Active Publication Date: 2015-04-29
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, in case template matching is used, motion vectors are not decoded into the bitstream

Method used

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  • Method and device for video coding
  • Method and device for video coding
  • Method and device for video coding

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Embodiment Construction

[0030] This disclosure describes video coding techniques suitable for template matching motion predictive coding of video units. In this disclosure, the term "decoding" refers to encoding or decoding. Similarly, the term "coder" generally refers to any video encoder, video decoder, or combined encoder / decoder (codec). Accordingly, the term "coder" is used herein to refer to a special purpose computer device or apparatus that performs video encoding or video decoding or both video encoding and video decoding.

[0031] Template matching is a technique that can be used to eliminate motion vectors but still provide the advantages of motion compensated video coding. In template matching, a template defines the shape of neighboring pixels with respect to the video block being coded. A template shape is defined relative to a video block and may adjoin or surround a video block, but need not be positioned immediately adjacent to a video block. A template shape may be applied to one...

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Abstract

In one aspect of this disclosure, template matching motion prediction is applied to B-frames. In another aspect of this disclosure, template matching motion prediction as applied to video block coding may include generating a template offset, generating a weighted sum of absolute differences, selecting a number of hypotheses used to encode video blocks based on the cost associated with the number of hypotheses and signaling, with a new syntax, to a decoder, the number of hypotheses used in encoding, rejecting hypotheses if the difference in value between a hypothesis and a reference hypothesis is greater than a threshold value, and / or generating the content of a sub-block that does not have reconstructed data available by combining motion-compensated prediction and luma residuals.

Description

[0001] Related applications [0002] This application claims the benefit of US Provisional Application No. 61 / 222,836, filed July 2, 2009, which is hereby incorporated by reference in its entirety. technical field [0003] This disclosure relates to video coding, and more particularly, to video coding techniques using template matching motion prediction. Background technique [0004] Digital multimedia capabilities can be incorporated into a wide range of devices, including digital television, digital live broadcast systems, wireless communication devices, wireless broadcast systems, personal digital assistants (PDAs), laptop or desktop computers, digital cameras, digital recording devices, video game devices, video game consoles, cellular or satellite radiotelephones, digital media players, and the like. Digital multimedia devices may implement video coding techniques such as MPEG-2, ITU-H.263, MPEG-4, or ITU-H.264 / MPEG-4 Part 10, Advanced Video Coding (AVC) to more effic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/105H04N19/176H04N19/147H04N19/46H04N19/51H04N19/19H04N19/573H04N19/577
CPCH04N19/51H04N19/573H04N19/577H04N19/105H04N19/176H04N19/147H04N19/46H04N19/19H04N19/119H04N19/50H04N19/70
Inventor 马尔塔·卡切维奇钱威俊
Owner QUALCOMM INC