Method and device for image encoding/decoding, and recording medium having bitstream stored thereon

An image and encoding technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problem of small transformation coefficients, reduce computational complexity, and improve image encoding and decoding efficiency

Pending Publication Date: 2021-02-26
ELECTRONICS & TELECOMM RES INST +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art, the method of binary coding the transform coefficient mainly considers the case that the value of the transform coefficient is not large

Method used

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  • Method and device for image encoding/decoding, and recording medium having bitstream stored thereon
  • Method and device for image encoding/decoding, and recording medium having bitstream stored thereon
  • Method and device for image encoding/decoding, and recording medium having bitstream stored thereon

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Embodiment Construction

[0055] Various modifications can be made to the invention, and there are various embodiments of the invention, examples of which will now be provided and described in detail with reference to the accompanying drawings. However, although the exemplary embodiments can be interpreted as including all modifications, equivalents, or substitutions within the technical idea and technical scope of the present invention, the present invention is not limited thereto. Like reference numerals refer to identical or similar functions in all respects. In the drawings, the shapes and sizes of elements may be exaggerated for clarity. In the following detailed description of the invention, reference is made to the accompanying drawings which show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure. It should be understood that the various embodi...

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Abstract

The present specification discloses a method for image decoding. The method for image decoding may comprise the steps of: determining a zero out area in a current block; dividing an area excluding thezero out area from the current block into transform coefficient group units; and decoding transform coefficients in the transform coefficient group units.

Description

technical field [0001] The present invention relates to a method and apparatus for encoding / decoding images and a recording medium for storing bitstreams. In particular, the present invention relates to an improved transform coefficient encoding / decoding method. Background technique [0002] Recently, in various application fields, demands for high-resolution and high-quality images such as high-definition (HD) images and ultra-high-definition (UHD) images have increased. However, image data of higher resolution and quality has an increasing amount of data compared to conventional image data. Therefore, when image data is transmitted by using a medium such as a conventional wired and wireless broadband network, or when image data is stored by using a conventional storage medium, the cost of transmission and storage increases. In order to solve these problems that arise as the resolution and quality of image data increase, efficient image encoding / decoding techniques are re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/18H04N19/129H04N19/119H04N19/48H04N19/176
CPCH04N19/119H04N19/129H04N19/132H04N19/176H04N19/18H04N19/60H04N19/48
Inventor 李镇浩姜晶媛李河贤林成昶金晖容金旲衍朴都铉金在坤尹庸旭李英烈
Owner ELECTRONICS & TELECOMM RES INST
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