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Image encoding/decoding method, apparatus and an image processing method, system

An image coding and image technology, which is applied in the field of image processing, can solve the problems of low image coding efficiency, low coding efficiency, and inability to make full use of multi-reference frame technology, and achieve the effect of improving flexibility and coding efficiency

Inactive Publication Date: 2009-03-18
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] However, in the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: since the images after the IDR image do not use the images before the IDR as a reference, that is to say, the images after the IDR image cannot make full use of multiple Reference frame technology, so will result in lower coding efficiency
Under the premise of ensuring the performance of random access, the existing technology reduces the efficiency of image coding and makes the flexibility of random access poor

Method used

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  • Image encoding/decoding method, apparatus and an image processing method, system
  • Image encoding/decoding method, apparatus and an image processing method, system
  • Image encoding/decoding method, apparatus and an image processing method, system

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Embodiment Construction

[0054] Embodiments of the present invention provide an image encoding / decoding method and device, which are used to further improve image encoding efficiency and improve random access flexibility on the premise of ensuring random access performance.

[0055] The first coded picture after RAP is an I picture. In the prior art, the P picture after RAP only refers to the I picture, but in the embodiment of the present invention, the P picture after RAP not only refers to the I picture, but also can refer to the distance through the RAP The reconstructed image obtained by decoding the most recent B image. The B-picture closest to the RAP mentioned in the embodiments of the present invention refers to the B-picture closest to the RAP in a display order.

[0056] In the embodiment of the present invention, the encoding and decoding process of the I picture, the B picture, and the P picture after the RAP that does not need to refer to the picture before the RAP is the same as that of...

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Abstract

This invention discloses an image coding / decoding method and device for further improving the image coding efficiency and improving the flexibility of random access on the premises of guaranteeing the random access performance. The method comprises: hiding errors of a reference image in the front of a random access point and decoding a bidirectional prediction coding image behind the random access point so as to obtain a re-constructed image, wherein the reference image is the direct or indirect reference image of the bidirectional prediction coding image; or hiding errors of the bidirectional prediction coding image behind the random access point to obtain the re-constructed image; referencing a first intra-frame coding image behind the random access point and the re-constructed image; coding at least one forward prediction coding image behind the random access point. This invention further provides an image processing method and system. This invention is used for coding and decoding.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image encoding / decoding method and device, and an image processing method and system. Background technique [0002] Video image compression coding is a very active research field at present. In the past 20 years, video compression coding technology has been continuously developed, and new video compression coding standards are also emerging. The MPEG-1 standard formulated by the MPEG (Moving Picture Experts Group) organization in 1991 was oriented to the application of VCD storage discs and achieved great success in the market; the MPEG standard jointly formulated by MPEG and the International Telegraph Union (ITU, International Telegraph Union) in 1994 -2 standard for digital TV broadcasting and DVD laser video disc applications. This standard is currently the most widely used, mature and far-reaching video compression standard in the fields of digital vide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/64H04N7/68H04N19/89H04N19/895
Inventor 林永兵
Owner HUAWEI TECH CO LTD
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