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Boundary artifact correction within video units

A video unit and boundary technology, applied in the field of digital video decoding, can solve problems such as undesired spatial artifacts and visual quality damage

Inactive Publication Date: 2013-06-12
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although FRUC can enhance temporal quality by substituting frames (e.g., using interpolation or extrapolation), the substitution of some frames can introduce undesirable spatial artifacts that destroy visual quality

Method used

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  • Boundary artifact correction within video units
  • Boundary artifact correction within video units
  • Boundary artifact correction within video units

Examples

Experimental program
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Embodiment Construction

[0029] figure 1 A block diagram of an example video encoding and decoding system 10 to illustrate correcting boundary artifacts generated during video unit substitution in accordance with the techniques described in this disclosure. Video unit substitution, which may include video unit interpolation or extrapolation, typically involves the replacement of video units that are skipped by the encoder, video units that exceed the base video unit coding rate produced by the encoder, or that are lost or lost during transmission over a communication channel. An approximation of the content of the video unit that was destroyed. Video unit substitution may be used to support a process often referred to as frame rate up-conversion (FRUC). Although the techniques of this disclosure may be applied to various types of video units, such as video frames, slices, blocks, or sub-blocks, for purposes of illustration, this disclosure generally describes applying the techniques to video frames. ...

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Abstract

This disclosure describes techniques for correcting artifacts that occur along a boundary of a substitute video unit generated using video unit substitution, e.g., motion-compensated video unit interpolation or extrapolation. In accordance with the techniques described in this disclosure, a frame substitution unit identifies first locations within a substitute video unit that correspond with a boundary that exists within a reference video unit and should exist within the substitute video unit, and corrects boundary artifacts in the first locations using a first boundary artifact correction technique. The frame substitution unit also identifies second locations within the substitute video unit that correspond with a boundary that exists within the substitute video unit and does not exist within the reference video unit and corrects boundary artifacts in the second locations using a second boundary artifact correction technique.

Description

[0001] This application claims the benefit of US Provisional Application No. 61 / 047,381, filed April 23, 2008, which is hereby incorporated by reference in its entirety. technical field [0002] This disclosure relates to digital video coding, and more particularly, techniques for improving artifacts within digital video data. Background technique [0003] For encoding digital video sequences, many video encoding techniques have been developed. For example, the Motion Picture Experts Group (MPEG) has developed several technologies, including MPEG-1, MPEG-2 and MPEG-4. Other examples include the International Telecommunication Union (ITU)-T H.263 standard and the ITU-T H.264 standard and its counterpart, Part 10 of ISO / IEC MPEG-4 (ie, Advanced Video Coding (AVC)). These video coding standards support efficient transmission of video sequences by encoding data in a compressed manner. Compression reduces the total amount of data that needs to be transmitted. [0004] Video co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/01H04N7/26H04N7/46H04N7/50
CPCH04N19/00781H04N19/00751H04N19/00721H04N19/00533H04N19/00127H04N7/0127H04N19/00909H04N19/00642H04N19/61H04N19/132H04N19/44H04N19/55H04N19/587H04N19/86H04N19/577
Inventor 格克切·戴恩滕佳缘
Owner QUALCOMM INC