High-efficiency video coding inter-frame mode judging method based on temporal relativity

Abstract

The invention discloses a high-efficiency video coding (HEVC) inter-frame mode judging method based on temporal relativity, which comprises the steps of forecast method configuration and forecast mode selection. The forecast mode selection adopts the temporal relativity between two adjacent frames; the similarity of PU (Physical Unit) modes of a large size CU (Control Unit) of a corresponding piece in the previous frame and a small size CU in the current piece is analyzed according to the relativity; and finally, a PU mode selection method of the current CUs in various dimension is designed for the corresponding pieces in various dimensions according to the similarity. Compared with the HEVC standard in the prior art, with the adoption of the HEVC inter-frame mode judging method, the complexity of codding computation is reduced to a greater extent on the premise that the bit rate and video quality are almost unchanged.

Description

technical field [0001] The invention relates to the technical problem of video coding inter-frame mode in the field of image communication, in particular to a high-performance video coding inter-frame mode judgment method. Background technique [0002] The current international video coding standard is Advanced Video Coding (H.264 / AVC). Compared with previous video coding standards, this video coding standard has greatly improved video coding performance. With the wide application of high-definition video technology, the maximum block size of 16×16 in H.264 / AVC is no longer suitable for encoding high-definition video. To this end, the International Organization for Standardization-International Electrotechnical Commission / Moving Picture Experts Group (ISO-IEC / MPEG) and the International Telecommunication Union Telecommunication Standardization Organization / Video Coding Experts Group (ITU-T / VCEG) have been established. Video Coding Joint Development Team (JCT-VC), and is dev...

AI Technical Summary

Problems solved by technology

All of the above methods have reduced the computational complexity of HEVC video coding to a certain extent, but the current inter-frame prediction mode of HEVC video coding still has a large redundancy in the time domain.

[0005] Compared with H.264 / AVC, HEVC has greatly improved the video compression ratio, but the computational complexity of video coding has increased a lot. Although many scholars have proposed some fast video coding methods for H.264 / AVC , and a fast video coding method for HEVC, but the fast video coding method of H.264 / AVC is not suitable for HEVC, and the current fast video coding method of HEVC still has some distance to the goal of applying it to real-time communication

Images