Method, device, equipment and storage medium for determining index value of coding unit

Abstract

The present application provides a method, device, device, and storage medium for determining an index value of a coding unit, and relates to the technical field of video coding and decoding. The method includes: dividing the target coding block by using a target division method to obtain multiple coding units; for the target coding units in the multiple coding units, determining the position information of the target coding unit relative to a reference point in the target coding block; obtaining The scan step size corresponding to the target coding unit, the scan step size refers to the step size used to scan the target coding block, and the scan step size is less than or equal to half of the block size of the target coding unit; according to the position information and the scan step size , to determine the index value of the target coding unit. The technical solution provided by the embodiment of the present application scans to establish the corresponding relationship between the index value and the memory location where the pattern information is stored, and then according to the location information and the scan step size, the index value of the coding unit can be quickly determined, which improves the accuracy of the pattern information. Access efficiency.

Description

technical field [0001] The embodiments of the present application relate to the field of video coding and decoding technologies, and in particular, to a method, device, device, and storage medium for determining an index value of a coding unit. Background technique [0002] A video signal refers to a sequence of images comprising a plurality of frames. Because the data bandwidth of the video signal is very high after digitization, it is difficult for computer equipment to directly store and process it, so video compression technology is needed to reduce the data bandwidth of the video signal. [0003] The video compression technology is implemented through video coding. During video coding, an image block to be encoded is divided into multiple image blocks. In the H.265 / HEVC (High Efficient Video Coding, high-efficiency video compression coding) standard, an image block to be encoded can be divided into multiple CU (Coding Unit, coding unit) by QT (Quad Tree, quadtree) divi...

AI Technical Summary

Problems solved by technology

[0004] However, when the related technology needs to access the mode information of a certain CU, it is necessary to re-list the possible positions and sizes of all CUs in the image block to be encoded in order to determine the index value of the CU. The determination process of the index value is complicated and low-cost. efficiency, which is not conducive to the improvement of access efficiency

Images