Error concealment method and apparatus
An error concealment and error concealment technology, applied in the field of error concealment, can solve the problems of difficult to obtain satisfactory video quality and error concealment of HEVC video
Active Publication Date: 2016-10-05
ZTE CORP
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Problems solved by technology
[0007] The present invention provides an error concealment method and device to solve the problem that HEVC video is difficult to obtain satisfactory video quality
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Embodiment 1
[0085] The technical solution of the present invention combines HEVC video coding characteristics, and uses the correlation between the damaged image area and the decoded image information to repair the damaged image, so as to solve the problem that it is difficult to obtain satisfactory video quality for HEVC video.
[0086] Specific embodiments are given below in conjunction with the accompanying drawings to further illustrate the technical solution of the present invention.
[0087] Such as figure 1 As shown, the present invention provides a method for error concealment, the method comprising:
[0088] Step S101: taking each error block in the current error coding tree unit CTU as the current error block in sequence;
[0089] Step S103: Determine the spatial left adjacent block and spatial upper adjacent block of the current erroneous block;
[0090] The left adjacent block in the space space and the adjacent block in the space space are adjacent to the error block in the...
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The present invention provides an error concealment method. The method includes the following steps that: each error block in a current error coding tree unit is adopted as a current error block sequentially; a spatial-domain left adjacent block and a spatial-domain upper adjacent block of the current error block are determined, wherein the spatial-domain left adjacent block and the spatial-domain upper adjacent block are adjacent to the error block in the spatial domain; when the spatial-domain left adjacent block and the spatial-domain upper adjacent block of the current error block are available, and neither of the spatial-domain left adjacent block and the spatial-domain upper adjacent block of the current error block is an intra-frame prediction block, time-domain and spatial-domain correlation comparison is carried out; if the spatial-domain correlation of the current error block is larger than a preset intensity threshold value, spatial-domain interpolation error concealment is carried out; and if the spatial-domain correlation of the current error block is not larger than the preset intensity threshold value, time-domain error concealment is carried out. According to the error concealment method provided by the above technical schemes of the invention, based on the coding characteristics of an HEVC (high efficiency video coding) video, the correlation of error block data and spatial-domain and time-domain adjacent data is utilized to repair a damaged image, and therefore, the error concealment method has a good repair effect for the damaged code streams of the HEVC video.
Description
technical field [0001] The invention relates to the field of video, in particular to a method and device for error concealment. Background technique [0002] Tremendous advances in network technology and video coding technology have made broadcast television, Internet video, and video communications increasingly popular. The inevitable mobile channel fading and network congestion will inevitably cause video data to be damaged during transmission. Concealing video errors at the decoding end is an important method to improve user experience. [0003] Error concealment technology uses the correlation between the correctly decoded video information and the damaged data to approximate the damaged image after the video error is detected at the decoding end. According to the spatial and temporal correlation between available data and erroneous data, error concealment techniques can be divided into spatial domain error concealment and temporal domain error concealment. [0004] S...
Claims
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Login to View More IPC IPC(8): H04N19/895H04N19/593
CPCH04N19/895
Inventor 曾幸王宁
Owner ZTE CORP