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Method for decoding video signals

A technology of video signal and decoding device, which is applied in the field of image processing, can solve the problems of rising cost of transferring and storing video data, etc., and achieve the effects of enhancing video encoding/decoding performance, enhancing video encoding performance, and enhancing video decoding performance

Inactive Publication Date: 2017-08-18
KT CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the cost of transferring and storing video data rises in order to provide high-quality video compared to conventional video data processing methods

Method used

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  • Method for decoding video signals
  • Method for decoding video signals
  • Method for decoding video signals

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Embodiment Construction

[0046] The invention is susceptible to various changes and modifications and has been illustrated with reference to different exemplary embodiments, some of which will be described and illustrated in the drawings.

[0047] However, these embodiments are not intended to limit the present invention, but are understood to include all modifications, equivalents and replacements belonging to the spirit and technical scope of the present invention.

[0048] Although the terms first, second, etc. may be used to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and a second element could be termed a first element, without departing from the teachings of the present invention. The term "and / or" includes any and all combinations of a plurality of the associated listed items.

[0049] It will be understood that when an element i...

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Abstract

The invention provides a method for decoding video signals having to-be-decoded current blocks by using a decoding device. The method comprises the steps of: obtaining a residual coefficient of current blocks from video signals; obtaining an inverse quantification residual coefficient through inverse quantification of the residual coefficient; obtaining residual samples of the current blocks through inverse transformation on the inverse quantification residual coefficient of the current blocks; selecting reference frames of the current blocks by using a reference index of the current blocks; determining reference blocks in the reference frames by using a movement vector of the current blocks; generating reference samples in the reference blocks and obtaining prediction samples of the current blocks by using the reference samples; reconstructing the current blocks by using the residual samples and the prediction samples, wherein the coefficients of vertical interpolation filters defined for half position samples and two 1 / 4 position samples are different from each other. A first deviation value is determined based on a bit depth of a luminance component and a second deviation value is constant.

Description

[0001] This patent application is a divisional application of an invention patent application with an international filing date of November 2, 2012, a national application number of 201280066253.8, and an invention title of "Image Coding Method and Device and Image Decoding Method and Device". technical field [0002] The present invention relates to image processing, and more particularly, to an inter-frame prediction method and an inter-frame prediction device. Background technique [0003] Recently, demands for high-resolution and high-quality videos such as high-definition (HD) and ultra-definition (UHD) videos have increased. [0004] In order to provide video with higher resolution and higher quality, the amount of video data increases. Therefore, the cost of transferring and storing video data rises in order to provide high-quality video compared to conventional video data processing methods. In order to solve these problems that occur along with the increase in reso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/176H04N19/46H04N19/117H04N19/82H04N19/105H04N19/52H04N19/119H04N19/13H04N19/129H04N19/61H04N19/136H04N19/167H04N19/503
CPCH04N19/44H04N19/105H04N19/117H04N19/119H04N19/124H04N19/13H04N19/159H04N19/176H04N19/45H04N19/46H04N19/50H04N19/503H04N19/52H04N19/61H04N19/82H04N19/129H04N19/136H04N19/167H04N19/172H04N19/184H04N19/134H04N19/174H04N19/91H04N19/80H04N19/198H04N19/436H04N19/40H04N19/109
Inventor 李培根权载哲金柱英
Owner KT CORP
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