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Method and device for encoding and decoding intra-frame prediction

a technology of encoding and decoding, applied in the field of image encoding and decoding technology, can solve the problems of insufficient research and development that can meet such needs, and achieve the effects of improving the encoding efficiency of pictures, improving the accuracy of prediction, and improving the construction of reference pixel structures

Inactive Publication Date: 2018-06-07
DOLBY LAB LICENSING CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention improves image ability to predict by better creating reference pixels and most probable modes in intra prediction. This results in more accurate prediction and improved efficiency in encoding pictures.

Problems solved by technology

Therefore, in order to perform various services or tasks through image prediction in various systems, a need for improvements of performance and efficiency of the image processing system has increased considerably, but research and developments that can meet such needs are insufficient.

Method used

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  • Method and device for encoding and decoding intra-frame prediction
  • Method and device for encoding and decoding intra-frame prediction
  • Method and device for encoding and decoding intra-frame prediction

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Embodiment Construction

[0086]While the invention is capable of being variously modified and altered, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

[0087]Terms such as first, second, A, B, and the like may be used to describe various components, but the components should not be limited by these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The term “and / or” includes any combination of a plurality of related listed items or any of a plurality of related listed items.

[008...

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Abstract

A method and a device for encoding and decoding intra prediction are disclosed. An image decoding method for performing intra prediction comprises the steps of: receiving a bitstream including data on prediction modes of a current block and a block adjacent to the current block; extracting the data from the received bitstream so as to confirm the prediction mode of the adjacent block; determining whether a boundary pixel within the adjacent block can be used as a reference pixel for the current block in consideration of the prediction mode of the adjacent block; obtaining the reference pixel of the current block according to the determined result; generating a prediction block predicted in the frame on the basis of the obtained reference pixel; and decoding the current block by using the generated prediction block.

Description

TECHNICAL FIELD[0001]The present invention relates to an image encoding and decoding technology and, more particularly, to encoding and decoding method and device for performing a reference pixel construction and a most probable mode construction in intra prediction.BACKGROUND ART[0002]With the spread of an Internet and mobile terminals and the development of information and communication technology, the use of multimedia data is increasing rapidly. Therefore, in order to perform various services or tasks through image prediction in various systems, a need for improvements of performance and efficiency of the image processing system has increased considerably, but research and developments that can meet such needs are insufficient.[0003]With an image encoding and decoding method and device according to the existing art described above, there has been a demand for performance improvement of image processing, particularly image encoding or image decoding.DISCLOSURETechnical Problem[00...

Claims

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Application Information

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IPC IPC(8): H04N19/105H04N19/119H04N19/176H04N19/59H04N19/109H04N19/51H04N19/117
CPCH04N19/105H04N19/119H04N19/176H04N19/59H04N19/109H04N19/51H04N19/117H04N19/577H04N19/11H04N19/593
Inventor JEONG, JE CHANGKIM, KI BAEKHWANG, UNG
Owner DOLBY LAB LICENSING CORP
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