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Intra-prediction encoding/decoding apparatus and method for omitting the transmission of prediction mode information using characteristics of reference pixels

A technology of intra-frame predictive coding and predictive mode, applied in image communication, digital video signal modification, television, etc., can solve the problems of low coding and decoding efficiency, and achieve the effect of reducing overhead

Active Publication Date: 2013-07-03
SK TELECOM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0023] However, the encoder has various additional information different from such prediction mode information to transmit to the decoder via the bit stream, wherein, due to the overhead of the bit stream, the greater the amount of additional information transmitted via the bit stream, the greater the number of encoding and decoding. less efficient

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  • Intra-prediction encoding/decoding apparatus and method for omitting the transmission of prediction mode information using characteristics of reference pixels
  • Intra-prediction encoding/decoding apparatus and method for omitting the transmission of prediction mode information using characteristics of reference pixels
  • Intra-prediction encoding/decoding apparatus and method for omitting the transmission of prediction mode information using characteristics of reference pixels

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Embodiment Construction

[0059] Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In the following description, like reference numerals refer to like elements even though these elements are shown in different drawings. Also, in the following description of the embodiments, a detailed description of known functions and configurations contained herein will be omitted for clarity.

[0060] Also, terms like first, second, A, B, (a) and (b) may be used when describing components of the present disclosure. These terms are only used to distinguish one component from another, but do not imply or imply the substance, order or sequence of these components. If components are described as being "connected," "coupled" or "linked" to another component, it may mean not only that the components are directly "connected," "coupled" or "linked" to the other component, but also that These components are indirectly "connected", "coupled" or "linked" to ano...

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Abstract

Disclosed are an intra-prediction encoding / decoding apparatus and a method for omitting the transmission of prediction mode information using characteristics of reference pixels. The intra-prediction encoding apparatus according to one embodiment of the present invention comprises: a characteristic information calculation unit, which selects at least one of the reference pixels close to the current block to be encoded so as to calculate characteristic information on a direction; a comparison unit comparing the characteristic information on the direction calculated by the characteristic information calculation unit with a predetermined reference value; a prediction mode determination unit determining a prediction mode of the current block as a mode corresponding to the selected reference pixel, when a result of the comparison by the comparison unit meets a predetermined condition; ; and an encoding unit encoding a residual value between the current block and prediction block according to a determined mode, if the result of the comparison meets the predetermined condition, and omitting encoding mode information on the determined mode.

Description

technical field [0001] The present disclosure relates, in some embodiments, to intra-prediction encoding / decoding apparatus and methods. More specifically, the present disclosure relates, in some embodiments, to an intra prediction encoding / decoding apparatus and method that omits information about the current block using characteristics of reference pixels adjacent to the current block. The transmission of the additional information of the prediction mode of the block, therefore, can reduce the overhead that occurs when bitstream is generated, and can improve the efficiency of image encoding and decoding while maintaining the accuracy of intra prediction. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] With the development of information and communication technologies including the Internet, video communication is increasing in addition to text an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/34H04N19/593
CPCH04N19/176H04N19/46H04N19/593H04N19/11H04N19/14H04N19/105H04N19/182H04N19/44
Inventor 宋振翰林晶娟郑太荣李爀郑济昌
Owner SK TELECOM CO LTD