Point Cloud Media Track Quality Indication for Decoding Efficiency
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Solution Overview
Problem
Current point cloud media packaging technologies cannot determine which track in an alternative group to consume, leading to low decoding efficiency due to the lack of clear quality indicators for interchangeable media tracks.
Innovation Solution
Incorporating quality indication information into at least one media track within an alternative group, allowing the unpackaging device to selectively consume tracks based on quality information, thereby conserving network resources and improving decoding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple interchangeable media tracks are packaged without quality indication information, then the alternative group provides coding mode and code rate differentiation, but the unpackaging device cannot determine which track to consume, resulting in low decoding efficiency
Solution Approach 1:
The patent applies the principle of making tracks distinguishable by adding quality indication information (analogous to color changes) to each media track. This allows the unpackaging device to identify and select appropriate tracks based on quality requirements, resolving the inability to differentiate between interchangeable tracks while maintaining decoding efficiency.
Solution Approach 2:
The patent introduces quality indication information as an intermediary element that mediates between the alternative group of tracks and the unpackaging device. This intermediary provides the necessary guidance for track selection, enabling the unpackaging device to efficiently determine which track to consume without sacrificing the adaptability of the alternative group structure.
2Productivity
If quality indication information is added to media tracks, then decoding efficiency is improved by enabling track selection, but the file structure and processing complexity increase
Solution Approach 1:
The patent applies preliminary action by adding quality indication information during the packaging phase. This allows the unpackaging device to make informed decisions about track selection before actual decoding occurs, improving decoding efficiency while keeping the additional structure minimal and predetermined rather than dynamic or complex.
3Loss of information
If the unpackaging device consumes all tracks in an alternative group, then complete quality information is available, but network resources and decoding resources are wasted
Solution Approach 1:
The patent applies the principle of extraction by enabling the unpackaging device to extract and consume only the necessary track from the alternative group based on quality indication information. This avoids the need to process all tracks, thereby conserving network resources and decoding resources while still obtaining the required quality information.
Data Source
AI summary
This application provides a packaging method and apparatus for a point cloud media file, a device and a storage medium. The method includes acquiring target point cloud; encoding the target point cloud to obtain an alternative group of the target point cloud, the alternative group comprising N interchangeable media tracks, and N being an integer greater than 1; adding quality indication information into at least one media track among the N media tracks to obtain a media file of the target point cloud, the quality indication information indicating quality of the media track; and packing the media file with first information, the first information indicating quality information of at least one media track among the N media tracks.