Apparatus and method for encoding/decoding additional intra-information

A technology for adding frames and equipment, applied in image communication, digital video signal modification, television and other directions, can solve the problem of difficulty in improving the total compression rate, and achieve the effect of reducing the amount of information

Active Publication Date: 2013-09-11
SK TELECOM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, a higher compression rate can be achieved by performing intra prediction on a finer image, but additional information is required in order to decode it, i.e., many signals such as the block division method and the intra prediction mode, which makes it difficult to increase the overall compression ratio

Method used

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  • Apparatus and method for encoding/decoding additional intra-information
  • Apparatus and method for encoding/decoding additional intra-information
  • Apparatus and method for encoding/decoding additional intra-information

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Embodiment Construction

[0043] Hereinafter, an apparatus and method for encoding / decoding additional intra information according to an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0044] figure 2 is a schematic diagram of an additional intra-information encoding device according to at least one embodiment of the present disclosure. refer to figure 2 , the additional intra information encoding device 200 according to at least one embodiment includes an intra prediction mode selection unit 210 , a segmentation and prediction mode table lookup unit 220 , and an entropy encoding unit 230 .

[0045] The intra prediction mode selection unit 210 performs intra prediction by applying predetermined various types of splits and prediction modes for a coding unit. The intra prediction mode selection unit 210 selects an optimal division combination and an optimal prediction mode by calculating encoding overhead for each combination of the appl...

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Abstract

Disclosed are an apparatus and method for encoding / decoding additional intra-information. An apparatus for encoding / decoding additional intra-information according to one embodiment of the present invention comprises: an additional intra-information encoder, which selects an optimum segmentation combination and prediction mode for a coding unit in accordance with a variety of types of preset segmentation and prediction modes, looks up a table in accordance with the selected segmentation combination and prediction mode, and performs entropy-encoding based on the table; and an additional intra-information decoder, which looks up and parses the table based on an entropy-decoded signal, generates a segmentation and prediction mode string based on the result of the lookup and parsing, and performs intra-mode decoding on the basis of the generated segmentation and prediction mode string.

Description

technical field [0001] Embodiments of the present disclosure relate to devices and methods for encoding / decoding additional intra information. More specifically, embodiments of the present disclosure aim to efficiently encode / decode additional intra-frame information due to increasing image sizes and resolutions in video data compression devices and increasing various methods of partitioning encoded blocks. , and relates to an apparatus and method for encoding / decoding additional intra-information capable of adaptively reducing information when encoding / decoding additional information by effectively managing division information and prediction mode information patterns of previous blocks using a history table quantity. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] In an apparatus for compressing video data, intra-coding is performed to efficient...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/34H04N19/593
CPCH04N19/13H04N19/157H04N19/159H04N19/176H04N19/463H04N19/105H04N19/11H04N19/117
Inventor 宋振翰林晶娟崔荣镐金勇求崔润植
Owner SK TELECOM CO LTD
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