SDP Signaling for 360-Degree Video Stream Alignment
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Solution Overview
Problem
Current 360-degree video stitching technologies lack standardization in alignment methods, requiring users to design platform-specific solutions and often result in unsatisfactory stitching quality, especially when stitching videos across remote servers, which complicates data transportation and customization.
Innovation Solution
The implementation of Session Description Protocol (SDP)-based signaling for camera calibration parameters enables standardized alignment and synchronization of multiple video streams, allowing for network-based stitching and remote server analysis, supporting immersive video content creation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If platform-specific stitching methods are designed, then customization capability is improved, but device complexity and alignment precision deteriorate
Solution Approach 1:
The patent applies universality by establishing a standardized alignment method that works across different camera configurations and platforms. The method uses calibration patterns and feature point matching that can be universally applied to various multi-camera systems, eliminating the need for platform-specific custom alignment algorithms while maintaining customization capability through configurable parameters.
2Adaptability or versatility
If network-based stitching is used, then data processing flexibility is improved, but data transportation complexity and time loss increase
Solution Approach 1:
The patent applies preliminary action by performing camera calibration and alignment parameter computation before the actual video stitching process. The calibration patterns are captured and processed in advance to establish transformation matrices, which are then stored and applied during video processing. This pre-computation reduces real-time processing requirements and enables more efficient network-based stitching.
3Manufacturing precision
If standardized alignment methods are implemented, then manufacturing precision and stitching quality are improved, but adaptability to different platforms deteriorates
Solution Approach 1:
The patent applies local quality by allowing different calibration patterns and feature extraction methods to be selected based on specific platform requirements while maintaining the overall standardized alignment framework. The system can adapt calibration parameters and processing details to match different camera types and configurations, ensuring high stitching quality across diverse platforms without sacrificing standardization.
Data Source
AI summary
Various embodiments herein provide techniques for Session Description Protocol (SDP)-based signaling of camera calibration parameters for multiple video streams. The camera calibration parameters may be used to stitch together (e.g., align and/or synchronize) the multiple video streams. In embodiments, the stitched video streams may form an immersive video content (e.g., 360-degree video content). Other embodiments may be described and claimed.