Video encoding and decoding method, video encoding and decoding device

Abstract

The embodiment of the invention discloses a video encoding and decoding method, and a video encoding and decoding device. The method in the embodiment of the present invention includes: acquiring the current image, and acquiring the motion vector accuracy of the current image according to the current image, the motion vector accuracy includes a set of search steps, and each search step in the set of search steps is smaller than One pixel unit; obtain the current block and the reference image of the current block; determine the search starting point in the reference image, and search for the target integer pixel point with a pixel unit as the search step from the search starting point; according to the motion Search for the matching block of the current block starting from the target integer pixel with vector accuracy; obtain the motion vector information and the prediction residual signal, and write the information of the reference image, the motion vector information and the prediction residual signal The input stream, the information of the reference image is used to indicate the reference image. The embodiments of the present invention can perform encoding and decoding in combination with video characteristics.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a video encoding and decoding method, and a video encoding and decoding device. Background technique [0002] With the rapid development of Internet technology and the increasingly rich material and spiritual culture of people, there are more and more requirements for video applications on the Internet, especially for high-definition video applications, and the data volume of high-definition video is very large. To be able to transmit in the Internet with limited bandwidth, the problem that must be solved first is the problem of high-definition video compression and encoding. Currently, there are two international organizations dedicated to the formulation of video coding standards, namely the International Organization for Standardization (ISO) / International Electrotechnical Commission (IEC) The Motion Picture Experts Group (Motion Picture Experts Group, referr...

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Problems solved by technology

[0006] However, the inventors of the present application found that for video sequences with different content characteristics, the use of fixed motion vector precision is not conducive to the encoding of video sequences

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