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Intra block copy-based encoding/decoding method, device, and bitstream storage medium

A technology of intra-frame block copy and block copy, which is applied in the field of bit stream recording medium and storage bit stream recording medium, can solve limitations and other problems, and achieve the effect of improving compression efficiency

Pending Publication Date: 2022-01-18
ELECTRONICS & TELECOMM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Conventional image encoding / decoding methods and devices use restricted intra block copy-based encoding / decoding techniques, and thus have limitations in improving encoding efficiency

Method used

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  • Intra block copy-based encoding/decoding method, device, and bitstream storage medium
  • Intra block copy-based encoding/decoding method, device, and bitstream storage medium
  • Intra block copy-based encoding/decoding method, device, and bitstream storage medium

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Embodiment Construction

[0059] 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, the present invention is not limited thereto although the exemplary embodiments can be construed as including all modifications, equivalents or substitutions within the technical idea and technical scope of the present invention. Like reference numerals refer to the same or similar functionality 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 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 emb...

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PUM

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Abstract

Provided are an image encoding / decoding method and device. An image decoding method according to the present invention is characterized by including: a step for acquiring prediction mode information about the current block from a bitstream; a step for deriving an intra block copy prediction mode of the current block by using the prediction mode information about the current block; and a step for recovering the current block on the basis of the intra block copy prediction mode, wherein the intra block copy prediction mode is at least one among a block copy-based skip mode, a block copy-based merge mode, and a block copy-based AMVP mode.

Description

technical field [0001] The present invention relates to an image encoding / decoding method and device and a recording medium for storing bit streams. More particularly, the present invention relates to a method and apparatus for encoding / decoding an image based on intra block copy and a recording medium for storing a bitstream generated by the image encoding method or apparatus of the present invention. Background technique [0002] Recently, demands for high-resolution and high-quality images such as high-definition (HD) or ultra-high-definition (UHD) images have increased in various applications. As the resolution and quality of images increase, the amount of data increases accordingly. This is one of the reasons for the increase in transmission cost and storage cost when image data is transmitted through an existing transmission medium such as a wired or wireless broadband channel or when image data is stored. In order to solve these problems of high-resolution and high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/105H04N19/109H04N19/119H04N19/137H04N19/176H04N19/186H04N19/513H04N19/593H04N19/70
CPCH04N19/105H04N19/109H04N19/119H04N19/137H04N19/176H04N19/186H04N19/513H04N19/593H04N19/70H04N19/52
Inventor 李河贤姜晶媛林成昶李镇浩金晖容
Owner ELECTRONICS & TELECOMM RES INST