Methods, computing devices, non-transitory computer-readable storage media, computer program products, and methods of storing a bitstream for video decoding
By using the spatial neighboring block motion vectors of the same-position picture in video encoding to reconstruct the sub-block temporal motion vector of the current coding unit, the problem of large amount of high-resolution video data is solved and more efficient encoding and decoding is achieved.
CN118433411BActive Publication Date: 2025-10-17BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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Patent Information
- Application Number
- CN202410671713.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2019-06-07
- Filing Date
- 2020-06-05
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2040-06-05
AI Technical Summary
Technical Problem
As the quality of digital video changes from HD to 4K×2K or even 8K×4K, the amount of video data to be encoded/decoded increases exponentially. It is difficult for existing technologies to encode/decode more efficiently while maintaining the image quality of the decoded video data.
Method used
The motion vector of the sub-block is predicted by determining the motion vector of the spatially adjacent block in the co-located picture of the current picture and reconstructing the temporal motion vector of the sub-block in the current coding unit.
Benefits of technology
Improves the efficiency of video encoding/decoding, reduces data volume, and maintains or improves image quality.
✦ Generated by Eureka AI based on patent content.
Abstract
A method, computing device, non-transitory computer-readable storage medium, computer program product, and method of storing a bitstream for video decoding are provided. A computing device performs a method of decoding video data by determining a collocated picture of a current coding unit, locating spatially neighboring blocks of the current coding unit corresponding to the collocated picture, determining a motion shift vector of the current coding unit from one or more motion vectors associated with the spatially neighboring blocks according to a predefined fixed order, and reconstructing a subblock-based temporal motion vector for a respective subblock of a plurality of subblocks in the current coding unit from a corresponding subblock in the collocated picture based on the motion shift vector.
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