Omnidirectional Media Viewpoint Looping Control
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Solution Overview
Problem
Omnidirectional media technologies, particularly 360° video, face fragmentation issues from capture to playback due to diverse capturing and video projection technologies, lacking a standardized format for seamless content and device compatibility.
Innovation Solution
The introduction of the Omnidirectional MediA Format (OMAF) standard and additional data structures for defining viewpoint looping information, such as ViewpointLoopingStruct, allow for precise control over looping scenarios within omnidirectional media applications, enabling multiple viewpoints and transitions, thereby addressing fragmentation and enhancing storytelling capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If omnidirectional media content is rendered with head-mounted display and headphones, then the user experiences immersive 360° video content, but the technology becomes fragmented due to various capturing and video projection technologies
Solution Approach 1:
The patent introduces a universal viewpoint looping mechanism that works across different omnidirectional media formats and devices. The ViewpointLoopingStruct data structure provides a standardized way to define looping behavior that is device-agnostic, allowing the same content to be played back consistently on various head-mounted displays and playback systems without device-specific modifications
2Ease of operation
If traditional media formats are used for omnidirectional video, then content can be played back, but precise control over looping scenarios and viewpoint transitions is lacking
Solution Approach 1:
The patent implements preliminary action by embedding viewpoint looping information directly into the omnidirectional media data during content creation. The ViewpointLoopingStruct data structure pre-defines all looping parameters (maximum loops, activation time, start time, destination viewpoint) so that precise control is automatically applied during playback without requiring real-time processing or additional user input
3Manufacturing precision
If viewpoint looping information is added to omnidirectional media data, then precise management of content timelines and transitions is enabled, but the data structure complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the viewpoint looping control into a distinct, modular data structure (ViewpointLoopingStruct) that is separate from the main omnidirectional media content. This structured approach segments the looping control information into specific fields (maximumLoops, activationTime, startTime, destinationViewpoint) that can be independently processed and managed, reducing overall system complexity
Data Source
AI summary
An omnidirectional media playback method, a terminal device and a computer readable storage medium. The method comprises: obtaining viewpoint looping information associated to a current viewpoint from omnidirectional media data (S202); and looping the current viewpoint according to the viewpoint looping information (S204). A mechanism for allowing viewpoint looping is provided and information about the viewpoint looping is defined.