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Device and method for performing transform by using singleton coefficient update

A technology of coefficients and transform blocks, applied in the field of encoding/decoding video signals, which can solve the problems of ineffectiveness and high complexity of KLT, and achieve the effect of enhanced transform design, low complexity, and rapid implementation.

Inactive Publication Date: 2018-05-11
LG ELECTRONICS INC
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Problems solved by technology

However, because of its high complexity, KLT is not very efficient

Method used

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  • Device and method for performing transform by using singleton coefficient update
  • Device and method for performing transform by using singleton coefficient update
  • Device and method for performing transform by using singleton coefficient update

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Embodiment Construction

[0035] The present invention provides a method for encoding a video signal, comprising: selecting a transformation parameter set via an optimization process for a target block, the transformation parameter set including a vertical transformation set, a horizontal transformation set and a transformation order parameter set; based on the selected transformation parameter set Updating the transform block with a singleton coefficient representing a single coefficient obtained by using a transform order parameter set; obtaining a transform coefficient for a target block based on the updated transform block; quantizing the transform coefficient; and entropy encoding the quantized transform coefficient.

[0036] Furthermore, in the present invention, the transformation order parameter set may include at least one of a direction parameter, a position index parameter, or a frequency parameter.

[0037] In addition, in the present invention, the transform order parameter set can be selec...

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Abstract

The present invention provides a method for encoding a video signal, the method comprising: a step of selecting a transform parameter set via an optimization process for a target block, wherein the transform parameter set comprises a vertical transform set, a horizontal transform set and a transform order parameter set; a step of updating, on the basis of the selected transform parameter set, a transform block having a singleton coefficient, wherein the singleton coefficient represents a single coefficient obtained on the basis of the transform order parameter set; a step of obtaining a transform coefficient for the target block on the basis of the updated transform block; a step of quantizing the transform coefficient; and a step of entropy encoding the quantized transform coefficient.

Description

technical field [0001] The present invention relates to methods for encoding / decoding video signals, and in particular, to techniques for performing transformations in an encoder using singleton coefficient updates, and in a decoder based on the singleton coefficient updates to which the singleton coefficient updates have been applied. Transform A technique that performs the inverse transform. Background technique [0002] Compression coding refers to a series of signal processing techniques for transmitting digitized information via a communication line, or techniques for storing information in a form applied to a storage medium. Media including pictures, images, audio, and the like can be targets for compression encoding, and in particular, a technique of performing compression encoding on pictures is called video image compression. [0003] Next-generation video content is assumed to be characterized by high spatial resolution, high frame rate, and high dimensionality of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/90H04N19/124H04N19/176H04N19/91H04N19/44H04N19/13H04N19/105
CPCH04N19/176H04N19/159H04N19/12H04N19/105H04N19/124H04N19/13H04N19/44H04N19/90H04N19/91H04N19/196H04N19/60G06N7/01
Inventor 奥努尔·G·居莱尔于兹赫尔米·E·埃吉尔麦斯亚娜·埃曼
Owner LG ELECTRONICS INC
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