360-Degree Video Region Metadata for Efficient Sub-Picture Transmission
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Solution Overview
Problem
Current methods for processing and transmitting 360-degree video data are inefficient, lacking effective solutions for independent processing and transmission of region information, which hinders the delivery of high-quality virtual reality experiences.
Innovation Solution
A method and device for processing 360-degree video data that involves acquiring, processing, and transmitting 360-degree video data by converting it into 2D pictures, dividing them into sub-pictures, generating metadata with positional information, encoding the sub-pictures, and transmitting the encoded data along with metadata, enabling efficient storage and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If 360-degree video data is processed as a whole, then the completeness of the video content is maintained, but the processing and transmission efficiency deteriorates
Solution Approach 1:
The patent divides the 360-degree video data into multiple sub-pictures based on region information, allowing independent processing of each sub-picture. This segmentation enables parallel processing and reduces the computational complexity of handling the entire video data as a single unit, thereby improving processing efficiency while maintaining data completeness through proper reconstruction.
2Adaptability or versatility
If region information is transmitted independently, then the flexibility and adaptability of video processing is improved, but the data transmission volume increases
Solution Approach 1:
The patent extracts only the essential region information (positional coordinates and dimensions) from the complete video data structure. By taking out only the necessary metadata required for sub-picture identification and reconstruction, the system achieves region-level processing flexibility without transmitting redundant data, thus avoiding excessive data volume increase.
3Productivity
If the entire 2D picture is transmitted as a single unit, then the simplicity of transmission is maintained, but the rendering efficiency and user experience deteriorates
Solution Approach 1:
The patent segments the 2D picture into multiple sub-pictures with associated region information, enabling the receiving device to render only the relevant sub-pictures based on user viewport or priority. This segmentation improves rendering efficiency by avoiding unnecessary processing of the entire picture, while the transmission mechanism maintains simplicity through standardized metadata inclusion.
Data Source
AI summary
A 360-degree video data processing method performed by a 360-degree video transmission device, according to the present invention, comprises the steps of: acquiring 360-degree video data; processing the 360-degree video data so as to acquire a 2D picture; dividing the 2D picture so as to derive sub-pictures; generating metadata for the 360-degree video data; encoding at least one of the sub-pictures; and performing processing for storing or transmitting the encoded at least one sub-picture and the metadata, wherein the metadata includes position information of the sub-picture on the 2D picture.