Method and system for quickly selecting HEVC intra-frame prediction mode

Abstract

The invention provides a method and a system for quickly selecting an HEVC intra-frame prediction mode. The system comprises a video frame input module, a video frame interception module, a target frame segmentation unit, a target frame prediction unit, a prediction module evaluation unit and a prediction mode selection unit. A video frame interception module intercepts N continuous frame images from the video images each time; a target frame segmentation unit obtains a plurality of target frame images; the target frame prediction unit includes a frame image segmentation unit, a frame image prediction encoding unit, and a frame image conversion unit. And the prediction mode selection unit is used for selecting a prediction mode meeting a predetermined condition based on the performance index values of the plurality of prediction modes related to the frame image prediction coding unit. And the target frame segmentation unit and the video frame interception module establish data communication through a data pipeline technology. According to the technical scheme, the HEVC intra-frame prediction mode rapid selection efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of image and video encoding and decoding, and in particular relates to a method and system for fast selection of an HEVC intra-frame prediction mode. Background technique [0002] HEVC (HIGH EFFICIENCY VIDEO CODDING) is a new generation video coding standard being planned by ISO / IEC MPEG and ITU-T VCEG. [0003] With the widespread popularity of high-definition video and ultra-high-definition video in the past ten years, the huge amount of information of high-definition video has brought a sharp increase in data transmission pressure on communication networks, and has also adversely affected the continued development of high-definition video. In order to solve this problem, JCT-VC, which is composed of VCEG and MPEG, formally collected the proposal for the next-generation video coding standard (CFP) in January 2010, and launched a new video coding standard, called High Efficiency Video Coding Standard (High ...

AI Technical Summary

Problems solved by technology

[0008] However, the HEVC video coding standard improves the coding efficiency by at least 40% based on H.264 / AVC, but it also greatly increases the algorithm complexity of the encoder

The increase in complexity significantly increases the implementation cost of HEVC's overall algorithm, which makes the design of the system particularly complicated

The problems include: the search range of inter-frame prediction is expanded, which further increases the computational complexity of motion estimation; the use of multiple reference frames in inter-frame prediction makes the computational complexity increase linearly with the number of reference frames

That is to say, although HEVC introduces many advanced coding techniques to improve its coding efficiency, the improvement of coding efficiency is at the cost of high computational complexity.

Images