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Directional interpolation method and video encoding/decoding apparatus and method using the directional interpolation method

一种设备、视频数据的技术，应用在视频编码/解码领域，能够解决不考虑视频的特征、准确度内插运动补偿变差等问题

Inactive Publication Date: 2007-08-01
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0041] As can be understood from FIGS. 2 and 3 , the sub-pixel interpolation of the related art is performed only horizontally or vertically without considering the characteristics of the video, thus causing deterioration in the accuracy of the interpolation and motion compensation using the interpolation.

Method used

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  • Directional interpolation method and video encoding/decoding apparatus and method using the directional interpolation method
  • Directional interpolation method and video encoding/decoding apparatus and method using the directional interpolation method
  • Directional interpolation method and video encoding/decoding apparatus and method using the directional interpolation method

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Embodiment Construction

[0073] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0074] FIG. 4 is a block diagram of a video encoder using an interpolation method according to an example embodiment of the present invention. The video encoder of Figure 4 may be an MPEG-2, MPEG-4 or H.264 encoder.

[0075] First, the input video data is divided into multiple 16×16 macroblocks.

[0076] The encoder control unit 410 acts as a bit rate controller to determine the quantization coefficients for each block in order to achieve the required bit rate for the entire sequence and the target bits for each picture.

[0077] The transform / quantization unit 420 transforms the input image data to remove spatial redundancy of the input image data. The transform / quantization unit 420 quantizes transform coefficients obtained by transform encoding using a predetermined quantization step, thereby obtaining two-dimensional N×M data compo...

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Abstract

A directional interpolation method and a video encoding / decoding apparatus and method using the directional interpolation method. The directional interpolation method includes selecting one of a plurality of directional interpolation modes for a predetermined-size block based on the characteristics of input image data, performing directional interpolation on the predetermined-size block based on the selected directional interpolation mode, and generating mode information indicating the selected directional interpolation mode.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to Korean Patent Application No. 10-2006-0006804 filed in the Korean Intellectual Property Office on Jan. 23, 2006, the entire disclosure of which is hereby incorporated by reference. technical field [0003] The methods and apparatus of the present invention relate to motion compensation, and more particularly, to video encoding / decoding using directional interpolation for improved motion compensation accuracy. Background technique [0004] According to the Moving Picture Experts Group (MPEG)-1, MPGE-2, MPEG-3, and H.264 coding standards, P picture coding in which the current picture is coded by referring to the previous picture, and P picture coding in which the previous picture and the future picture are coded by referring to the Both encode the B picture that encodes the current picture, and perform motion compensation according to the P picture encoding and the B picture encoding. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32
CPCG06T3/403H04N19/00781H04N19/00278H04N19/00303H04N19/00157H04N7/364H04N19/00896H04N19/00066H04N19/00024H04N19/00739H04N19/00545H04N19/105H04N19/117H04N19/14H04N19/176H04N19/182H04N19/46H04N19/523H04N19/61H04N19/82E05Y2800/428E06B7/14
Inventor 宋秉哲
Owner SAMSUNG ELECTRONICS CO LTD
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