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Method for concealing time-domain errors on basis of inter-frame modes and movement repair

An inter-frame mode and motion patching technology, applied in the field of video coding, can solve the problem of high complexity, and achieve the effect of ensuring real-time performance, suitable algorithm complexity, and improving effect.

Inactive Publication Date: 2013-09-18
ACAD OF BROADCASTING SCI SARFT +1
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Problems solved by technology

However, the complexity of the two algorithms is high, and there is still room for improvement in the correctness of motion vector prediction and the effect of error concealment

Method used

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  • Method for concealing time-domain errors on basis of inter-frame modes and movement repair
  • Method for concealing time-domain errors on basis of inter-frame modes and movement repair
  • Method for concealing time-domain errors on basis of inter-frame modes and movement repair

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0042] A method for temporal error concealment based on inter-mode and motion inpainting, such as figure 1 shown, including the following steps:

[0043]Step 1. Classify the error concealment method according to the inter-frame mode information of the correctly received blocks adjacent to the upper, lower, left, and right of the current damaged macroblock, and repair the motion vectors respectively;

[0044] Step 2. Using the method of motion compensation, the reconstructed value of the damaged block is obtained in its reference frame by using the motion vector obtained after repair.

[0045] Now explain according to different inter-frame modes:

[0046] (1) If there is an inter-frame mode with a minimum division of 4×4, 4×8, 8×4 in the sub-block of the adjacent correctly received macroblock or an inter-frame mode with Intra, then divide the current damaged...

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Abstract

The invention relates to a method for concealing time-domain errors on the basis of inter-frame modes and movement repair. The method is mainly technically characterized by comprising steps of classifying processes for concealing the errors according to inter-frame mode information of upper, lower, left and right correct receive blocks adjacent to a current damaged macro block and respectively repairing damaged movement vectors; acquiring reconstruction values of the damaged block in reference frames by the aid of a movement compensation process and repaired movement vectors. The method has the advantages that the inter-frame mode information of the correct receive blocks adjacent to the damaged macro block is sufficiently utilized, the movement vectors of the damaged block are repaired by the aid of the different processes for concealing the errors, the movement compensation process on the basis of sub-blocks is used for complicated areas, a boundary matching process is used for relatively flat areas, a zero movement vector process is used for static areas, accordingly, the movement vectors of the damaged block can be accurately recovered, an error concealment effect is improved, the algorithm complexity is proper, and the instantaneity of the method in mobile application can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of video coding, in particular to a time-domain error concealment method based on an inter-frame mode and motion patching. Background technique [0002] In recent years, with the rapid development of third-generation mobile communication and multimedia technology, video communication technology has been widely used in many aspects and has become an indispensable part of people's work, study and life. Such as using video communication technology to realize the exchange of real-time on-site information, broadcasting video on the Internet, using satellite video transmission system to establish a remote combat command system, and so on. However, there are also many kinds of redundancy in video data, including time domain redundancy, spatial redundancy, statistical redundancy, structural redundancy, and visual redundancy. The amount of information data is very large, and the bandwidth of the transmission channel ...

Claims

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Application Information

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IPC IPC(8): H04N7/68H04N7/26H04N19/895
Inventor 郭晓强解伟王强王毅门爱东杨波叶锋周银河
Owner ACAD OF BROADCASTING SCI SARFT
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