Fast selection method and device for interframe mode based on Merge technical movement vector

An inter-frame mode and motion vector technology, applied in the field of video coding, can solve problems such as not applicable to practical applications, high computational complexity, and unsuitable video coding standards

Active Publication Date: 2017-11-24
CENT SOUTH UNIV
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Problems solved by technology

However, since the new generation of video coding standards adopts the coding structure of QTBT (quad fork and binary division) and cancels the concept of prediction unit PU, the above algorithm is not

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  • Fast selection method and device for interframe mode based on Merge technical movement vector
  • Fast selection method and device for interframe mode based on Merge technical movement vector

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[0055] The technical solution of the present invention will be described in detail below with a preferred embodiment in conjunction with the accompanying drawings. The encoder used in the selected embodiment is the test model released by the Next Generation Video Coding Standards Expert Group——JEM4.0. The configuration of the specific encoding parameters uses the JEM standard configuration file: encoder_randomaccess_jvet10.cfg, and the standard configuration file corresponding to the test sequence.

[0056] In order to reduce encoding time and improve work efficiency, the technical solution specifically adopted in the present invention is: project the motion vector MV of the current CU (coding block) to the reference frame, thereby finding the projected block corresponding to the current CU in the reference frame, which can be approximated in theory It is considered that the projected block moves to the position of the current coding CU of the current frame through the displace...

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Abstract

The invention discloses a fast selection method and device for an interframe mode based on a Merge technical movement vector. The method comprises the steps that the movement vector MV of a current encoding unit CU is projected on a reference frame, accordingly a projection block corresponding to the current CU in the reference frame is found, and by using the correlation between the reference frame and the projection block on a prediction mode and the characteristics of the projection block, whether or not to jump over the CU is judged, and whether or not to jump over the interframe mode of movement estimation and movement compensation is judged; compared with the prior art, through information of the known projection block, the current encoding unit is predicted, the calculation complex rate of interframe prediction of a video encoder is lowered, the encoding time is reduced, and the encoding efficiency is improved; the fast selection method is easy in algorithm and low in calculated amount and can be put into practical application conveniently.

Description

technical field [0001] The invention belongs to the field of video coding, in particular to a method and device for fast selection of an inter-frame mode based on motion vectors of Merge technology. Background technique [0002] In the coding framework, predictive coding is one of the core technologies of video coding, and predictive coding is divided into intra-frame prediction and inter-frame prediction. Intra prediction is based on the spatial correlation of the video image, using the encoded adjacent pixels in the image to predict the current pixel. Inter-frame coding is based on the time correlation of video images, using the encoded image to predict the image to be encoded. After intra-frame and inter-frame prediction, the encoder can eliminate the spatiotemporal correlation of the video, and perform transformation, quantization, and entropy coding on the predicted residual instead of the original pixel value, thereby greatly improving the coding efficiency. [0003]...

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Application Information

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IPC IPC(8): H04N19/109H04N19/147H04N19/503
Inventor 张昊符婷
Owner CENT SOUTH UNIV
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