Transmission Device Separating Function Enhancement Metadata from Encoded Streams
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Solution Overview
Problem
Existing transmission systems face challenges in efficiently transmitting and receiving function enhancement information, such as dynamic range and color gamut conversion data, across terminals with varying capabilities, making it difficult to enhance image quality appropriately.
Innovation Solution
A transmission device and method that encodes image data into base and enhanced layers, and transmits these streams along with function enhancement information, including dynamic range and color gamut conversion metadata, outside the encoded streams, allowing receivers to process the data based on their capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If function enhancement information is transmitted inside the encoded stream, then the transmission structure is maintained, but the reception side cannot easily acquire the information for appropriate processing
Solution Approach 1:
The patent segments the transmission content into two distinct parts: the encoded stream containing image data and a separate metadata structure containing function enhancement information. This segmentation allows the reception side to independently access and process the function enhancement information without having to parse through the encoded stream structure, thereby resolving the contradiction between maintaining transmission structure and enabling easy information acquisition.
Solution Approach 2:
The patent introduces a metadata structure as an intermediary between the encoded stream and the reception processing. This metadata acts as a bridge that carries function enhancement information in a standardized, easily accessible format, allowing receivers to acquire and apply the information without direct interaction with the complex encoded stream structure.
2Adaptability or versatility
If multiple encoded streams are transmitted to support various terminal capabilities, then adaptability is improved, but transmission complexity increases
Solution Approach 1:
The patent creates a universal metadata structure that can serve multiple terminal capabilities simultaneously. Rather than creating separate transmission structures for different terminals, the single metadata structure contains function enhancement information that can be applied across various terminal types, reducing transmission complexity while maintaining broad adaptability.
Solution Approach 2:
The patent enables adaptability through parameter changes in the metadata rather than through multiple encoded streams. By varying the function enhancement parameters (such as dynamic range transfer characteristics, color space conversion parameters) in the metadata, the system can adapt to different terminal capabilities without increasing the structural complexity of the transmission.
Data Source
AI summary
The reception side can easily acquire at least function enhancement information inside a codec.Image data of each picture of a base layer is encoded to generate a first encoded stream, and image data of each picture of an enhanced layer is encoded to generate a second encoded stream. The first encoded stream and the second encoded stream are transmitted. Function enhancement information including at least function enhancement information inside a codec is transmitted outside the encoded stream. For example, the function enhancement information further includes function enhancement information outside the codec.