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Moving picture decoding method

A technology of moving images and decoding methods, which is applied in image coding, image communication, image data processing, etc., and can solve problems such as low coding efficiency

Inactive Publication Date: 2007-02-14
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0067] The present invention is made to solve the above-mentioned problems, and the object is to provide a moving picture coding method that can avoid the low coding efficiency caused by the long time distance between the target picture and the reference picture, and corresponding to such avoidance. Video decoding method of video coding method with low coding efficiency

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Embodiment Construction

[0204] Next, embodiments of the present invention will be described.

[0205] (Embodiment 1)

[0206] figure 1 It is a block diagram for explaining the video coding apparatus according to Embodiment 1 of the present invention.

[0207] The moving picture encoding apparatus 10 according to the first embodiment divides a plurality of pictures constituting a moving picture into fixed data processing units (blocks), and encodes the image data of each picture for each block.

[0208] That is, the moving picture coding apparatus 10 has an input picture memory (hereinafter, also referred to as a frame memory) 101 that stores image data (input data) Id of an input picture and outputs the stored data Id for each block. Difference data between the image data Md of the target block to be encoded and the prediction data Pd of the target block output from the frame memory 101 is calculated as the prediction error data PEd of the target block. Prediction error coding section 103 that pe...

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Abstract

A moving picture coding apparatus for performing inter-picture prediction coding on a picture constituting a moving picture includes a coding unit for performing prediction error coding on image data, a decoding unit for performing prediction error decoding on the output of the coding unit, a reference picture memory for storing output data from the decoding unit, and a motion vector detector for detecting a motion vector according to the decoded image data stored in the memory. When coding a B picture as a coding object picture, information indicating whether the coding object picture is used as a reference picture upon coding of another picture is added as header information. In a decoding apparatus for decoding a code string Bs output from the moving picture coding apparatus, it is possible to simplify management of a memory for storing reference pictures according to the aforementioned header information.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of November 6, 2002, an application number of 02803477.5, and the title of the invention is "moving image coding method and moving image decoding method". technical field [0002] The present invention relates to a moving picture decoding method, and more particularly, to a method for decoding a picture constituting a moving picture with reference to other pictures of the moving picture. Background technique [0003] Generally, in the coding of pictures constituting a moving image, each picture is divided into a plurality of blocks, and the image information of each picture is compressed and encoded for each block by utilizing the redundancy in the spatial and temporal directions of the moving image ( Hereinafter, it is also simply referred to as coding). Here, in coding using the redundancy in the spatial direction, intra-screen coding using correlation of pixel valu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/36H04N7/46H04N7/50G06T9/00H04N19/176H04N19/513H04N19/52H04N19/557
Inventor 近藤敏志角野真也羽饲诚
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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