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DVC-HEVC video transcoding method based on key frame coding unit (CU) partition mode

A technology of DVC-HEVC and division mode, applied in digital video signal modification, electrical components, image communication, etc., can solve the problem of less research work

Active Publication Date: 2017-08-04
SICHUAN UNIV
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Problems solved by technology

The above methods are all research results for the optimization of DVC to H.264 transcoding or H.264 to HEVC transcoding, but there are very few related research works on DVC to HEVC transcoding

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  • DVC-HEVC video transcoding method based on key frame coding unit (CU) partition mode
  • DVC-HEVC video transcoding method based on key frame coding unit (CU) partition mode
  • DVC-HEVC video transcoding method based on key frame coding unit (CU) partition mode

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail, it is necessary to point out that following embodiment is only used for further description of the present invention, can not be interpreted as the restriction to protection scope of the present invention, those skilled in the art According to the content of the invention above, making some non-essential improvements and adjustments to the present invention for specific implementation shall still belong to the protection scope of the present invention.

[0022] figure 2 Among them, the DVC-HEVC video transcoding method based on the key frame coding unit division mode comprises the following steps:

[0023] (1) At the DVC decoding end, carry out intra-frame decoding to K frames, and extract its CU partition mode;

[0024] (2) According to the fusion algorithm based on statistical laws, the CU division mode of the K frame is fused once to obtain the CU div...

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Abstract

The invention provides a DVC-HEVC video transcoding method based on a key frame coding unit (CU) partition mode and a transcoder thereof, mainly relating to the partition of high efficiency video coding (HEVC) modes in transcoders. As the CU partition depth of a non-key frame is generally less than the partition depth of a key frame, the method comprises the following steps: firstly performing a fusion operation on the basis of the K frame partition mode, partitioning a WZ frame according to the fused CU partition mode, and then determining whether the CU needs to be further partitioned according to the motion vector of the WZ, and finally obtaining the CU partition mode of the WZ frame. According to the method provided by the invention, a layer-by-layer rate distortion optimization process with higher computational complexity in an HEVC module can be skipped, and thus the purpose of reducing the complexity of HEVC can be achieved; and experimental results show that by adopting the method provided by the invention, the computational complexity and transcoding time of video coding can be greatly reduced and the transcoding efficiency can be effectively increased in case of very small transcoding distortion.

Description

technical field [0001] The present invention relates to the technical problem of video transcoding in the field of image communication, in particular to a video transcoding technology between Distributed Video Coding (DVC) and Traditional Video Coding (HEVC) standards. Background technique [0002] With the rapid development of mobile communication and information technology, new video communication technologies are more and more widely used, such as mobile video calls, remote video sharing, drone video surveillance, etc. In these video communication devices, as the demand continues to increase, people are paying more and more attention to the quality and real-time performance of the video. Therefore, video compression coding puts forward higher requirements for the computing power of the device. The compression efficiency of video and the power consumption of the device The contradiction between them became more and more prominent. [0003] Due to the diversity of video co...

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Application Information

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IPC IPC(8): H04N19/122H04N19/103H04N19/176H04N19/40H04N19/513H04N19/587
Inventor 卿粼波熊珊珊何小海徐胤灏周文俊滕奇志
Owner SICHUAN UNIV
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