Wireless Image Metadata Signaling for 360-Degree Video Stitching
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Solution Overview
Problem
Current wireless communication systems lack an efficient method for transmitting and receiving metadata about images, particularly for stitching and processing 360-degree videos, which hinders the seamless delivery of high-quality VR content.
Innovation Solution
A method and apparatus for acquiring and transmitting metadata about image stitching in a wireless communication system, enabling efficient signaling of image information between terminals and networks, including the generation and processing of metadata for 360-degree video stitching, packing, and synchronization functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple image streams are transmitted separately for 360-degree video stitching, then image quality and stitching accuracy are improved, but transmission bandwidth consumption and system complexity increase
Solution Approach 1:
The patent combines multiple image streams into a single transmitted stream by embedding metadata about multiple images within one image data structure. This allows the receiver to extract and process multiple images without requiring separate transmission channels for each image, thereby reducing bandwidth consumption while maintaining the ability to perform accurate stitching operations.
Solution Approach 2:
The transmitted image stream is designed to serve multiple functions simultaneously: it carries the actual image data for display, embedded metadata for stitching operations, and information about additional images that can be extracted and processed separately. This multi-functional design eliminates the need for separate dedicated streams for each purpose.
2Measurement precision
If comprehensive metadata about image stitching is transmitted, then processing accuracy and VR content quality are improved, but data transmission volume and processing complexity increase
Solution Approach 1:
The metadata is segmented into distinct functional components including stitching parameters, image acquisition information, and processing instructions. This segmentation allows the receiving device to parse and process only the specific metadata elements relevant to its capabilities, reducing overall processing complexity while maintaining high processing accuracy for each individual function.
Solution Approach 2:
The metadata is prepared and organized in advance during the image capture and preprocessing stage, with all necessary stitching information and image characteristics pre-calculated and embedded. This preliminary preparation reduces the computational burden on the receiving device, as the complex analysis and organization of metadata has already been performed by the transmitting device.
3Productivity
If stitching is performed at the network side rather than terminal side, then processing efficiency is improved, but network infrastructure complexity and latency increase
Solution Approach 1:
The network side performs stitching operations in advance and stores the stitched results, so that when a user requests content, the pre-stitched images are immediately available for transmission. This eliminates real-time stitching latency during content delivery, though it does require upfront processing time and network infrastructure capability.
Data Source
AI summary
A communication method for an image transmission device in a wireless communication system, in accordance with the present invention, comprises the steps of: acquiring information on at least one image for which stitching is to be performed; generating metadata for the stitching, on the basis of the information on the at least one image; and transmitting the metadata for the stitching to an image reception device.


