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Intraprediction method and apparatus using video symmetry and encoding and decoding method and apparatus

一种帧内预测、视频解码的技术，应用在视频编码和解码领域

Inactive Publication Date: 2006-12-06
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the intra prediction method according to the related art, prediction is performed only by using adjacent pixels without effectively using such symmetry

Method used

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  • Intraprediction method and apparatus using video symmetry and encoding and decoding method and apparatus
  • Intraprediction method and apparatus using video symmetry and encoding and decoding method and apparatus
  • Intraprediction method and apparatus using video symmetry and encoding and decoding method and apparatus

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Embodiment Construction

[0031] Figure 4 is a flowchart illustrating an intra prediction method using symmetry of video according to an example embodiment of the present invention, and Figure 5 An example of an input video encoded by an intra prediction method using symmetry of a video according to an exemplary embodiment of the present invention is illustrated.

[0032] In the intra prediction method according to an exemplary embodiment of the present invention, an area to be encoded in a video is predicted by using the axis symmetry of another area of ​​the video.

[0033] Specifically, in the intra prediction method according to the present invention, a symmetric region is detected from a video, and a part of the symmetric region is mirrored with respect to a symmetry axis to eliminate spatial redundancy, thereby improving compression efficiency. This mirroring is used to predict a part of the symmetric region using the axial symmetry of the already encoded part of the symmetric region with resp...

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Abstract

An intraprediction method which improves compression efficiency using the symmetry of a video image in the intraprediction of the video, and a video encoding and decoding method and apparatus using the intraprediction method. The intraprediction method includes performing intraprediction by predicting a first region to be encoded in a video based on axial symmetry of a second region of the video with respect to a predetermined axis.

Description

technical field [0001] Apparatuses and methods consistent with the present invention relate to intraprediction of video, and, more particularly, to intraprediction using symmetry of video in intraprediction of video to improve compression efficiency, and using the intraprediction Predictive methods for video encoding and decoding. Background technique [0002] In well-known video compression standards such as MPEG-1, MPEG-2, MPEG-4 Vision, H.261, H.263, and H.264, generally, a picture is divided into macroblocks for video encoding. After encoding each macroblock in all available coding modes in intra prediction and interprediction, the bit rate required to encode the macroblock in the coding mode, and the ratio between the original macroblock and the decoded macroblock Compare the rate-distortion (RD) penalty between them. Then, an appropriate encoding mode is selected according to the comparison result, and the macroblock is encoded in the selected encoding mode. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32H04N19/593
CPCH04N19/00278H04N7/26026H04N7/26244H04N19/00042H04N19/00775H04N7/26122H04N19/00139H04N7/30H04N19/11H04N19/136H04N19/176H04N19/60H04N19/51
Inventor 孙有美朴正燻李相来金昭营
Owner SAMSUNG ELECTRONICS CO LTD
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