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Method and apparatus for encoding/decoding image, and recording medium in which bit stream is stored

An image and encoding technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of increased computational complexity, achieve the effect of reducing computational complexity and improving image encoding/decoding efficiency

Active Publication Date: 2019-07-16
ELECTRONICS & TELECOMM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] A disadvantage of conventional image encoding / decoding methods and devices is the increased computational complexity during calculation of weighted sums for motion compensation of overlapping blocks and derivation of motion information of neighboring blocks

Method used

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  • Method and apparatus for encoding/decoding image, and recording medium in which bit stream is stored
  • Method and apparatus for encoding/decoding image, and recording medium in which bit stream is stored
  • Method and apparatus for encoding/decoding image, and recording medium in which bit stream is stored

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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 with reference to the accompanying drawings and will be described in detail. However, the present invention is not limited thereto although the exemplary embodiments can be construed to include all modifications, equivalents or replacements within the technical idea and technical scope of the present invention. Like reference numerals refer to identical or similar functions in various 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 that 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 em...

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Abstract

The present invention relates to a method for encoding and decoding an image. The method for decoding an image may comprise the steps of: generating a first prediction block of the current block by means of movement data thereof; determining at least one movement data of the current low-level block that can be utilized to generate a second prediction block from among movement data of neighboring low-level blocks; generating at least one second prediction block of the current low-level block by means of the determined at least one movement data; and generating the final prediction block on thebasis of weighted sum of the first prediction block of the current block and at least one second prediction block of the current low-level block.

Description

technical field [0001] The present invention relates to a method and apparatus for encoding / decoding images and a recording medium storing a bit stream. More particularly, the present invention relates to a method and apparatus for encoding / decoding images using overlapping block motion compensation. Background technique [0002] Recently, demands for high-resolution quality images such as high-definition (HD) images or ultra-high-definition (UHD) images have increased in various application fields. However, the data volume of image data of higher resolution and quality has increased compared with conventional image data. Therefore, when image data is transmitted by using a medium such as a conventional wired broadband network or a wireless broadband network, or when image data is stored in a conventional storage medium, transmission costs and storage costs increase. In order to solve these problems that arise as the resolution and quality of image data increase, efficient...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/14H04N19/176H04N19/513H04N19/105H04N19/109H04N19/96H04N19/86H04N19/82H04N19/91H04N19/13
CPCH04N19/176H04N19/513H04N19/51H04N19/105H04N19/96H04N19/91H04N19/13H04N19/82H04N19/117H04N19/593H04N19/124H04N19/109H04N19/14H04N19/86H04N19/119
Inventor 赵承眩林成昶姜晶媛高玄硕李镇浩李河贤全东山金晖容崔振秀
Owner ELECTRONICS & TELECOMM RES INST
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