Video coding method and device, video decoding method and device and storage medium

Abstract

The embodiment of the invention discloses a video coding method and device, a video decoding method and device and a storage medium, and belongs to the technical field of multimedia. In the embodiment of the invention, the to-be-coded coefficients in a plurality of transformation coefficient matrixes can be quantized by using a vector quantization method so as to obtain the corresponding first indication information, and then the video code stream of a target video is generated according to the plurality of code word indication information containing the first indication information. Subsequently, a decoding end can decode the vector quantized coefficient according to the first indication information. Therefore, the embodiment of the invention provides the video coding and decoding method based on the vector quantization, the application of the vector quantization in video coding and decoding is realized, and compared with scalar quantization and network coding quantization, the quantization performance is improved, and the video coding and decoding performance is further improved.

Description

technical field [0001] The present application relates to the field of multimedia technologies, and in particular to a video encoding and decoding method, device and storage medium. Background technique [0002] With the development of multimedia technology, video coding technology has been widely valued. When encoding a video, it is necessary to perform a discrete cosine transform on the residual signal of the video, so as to obtain a transformation coefficient matrix. Afterwards, the transform coefficients included in the transform coefficient matrix are quantized, and then the video code stream is determined according to the quantization result. At present, quantization techniques mainly include scalar quantization, vector quantization and trellis coding quantization. Among them, scalar quantization and trellis coding quantization have been widely used in video coding and decoding, but vector quantization has not yet been applied in video coding and decoding. Based on t...

AI Technical Summary

Problems solved by technology

At present, quantization techniques mainly include scalar quantization, vector quantization and trellis coding quantization. Among them, scalar quantization and trellis coding quantization have been widely used in video coding and decoding, but vector quantization has not yet been applied in video coding and decoding. Based on this, it is urgent to provide a video encoding and decoding method based on vector quantization technology

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