3D Video Service Signaling via Segmented Descriptors
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Solution Overview
Problem
Current broadcast systems primarily support 2D services, and there is a need for efficient methods to process and switch between 2D and 3D services, particularly in digital broadcasting, where 3D services require specific signaling and formatting to ensure proper reception and display.
Innovation Solution
The method involves encoding video data for 3D services, generating service information with descriptors indicating the video stream type, format, and frame rate, and using linkage descriptors to signal 3D services, allowing for smooth 2D-to-3D or 3D-to-2D switching in receivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If broadcast systems support only 2D services, then system simplicity is maintained, but 3D service capability is lost
Solution Approach 1:
The service information is segmented into multiple descriptors: a first descriptor indicating video stream type, a second descriptor indicating component type (2D or 3D video component), and optionally a third descriptor in the service description table indicating service type. This segmentation allows receivers to progressively identify 3D services without overwhelming complexity at any single processing stage.
Solution Approach 2:
Service information including 3D service indicators is transmitted in advance along with the video stream. The first descriptor, second descriptor, and service description table are prepared and embedded in the broadcast signal before reception, allowing receivers to identify and prepare for 3D service processing without requiring complex real-time analysis.
2Adaptability or versatility
If 3D services are added to broadcast systems, then service functionality is improved, but processing complexity in receivers increases
Solution Approach 1:
The receiver processing is divided into sequential stages corresponding to the descriptor structure: first parsing the video stream type indicator, then checking the component type descriptor, and finally verifying the service type in the description table. This segmentation reduces receiver complexity by breaking down 3D service identification into manageable steps.
Solution Approach 2:
All necessary service identification information is preliminarily prepared in the transmitted signal through structured descriptors. The receiver does not need to perform complex analysis but can simply parse the pre-organized service information, significantly reducing processing complexity while maintaining full 3D service capability.
3Measurement precision
If detailed service information is transmitted for 3D services, then service identification accuracy is improved, but signal bandwidth consumption increases
Solution Approach 1:
Service identification information is segmented into three compact descriptors rather than transmitting redundant comprehensive service information. The first descriptor identifies video stream type, the second identifies component type, and the third (optional) identifies service type. This segmentation achieves accurate 3D service identification with minimal data volume.
Solution Approach 2:
The service information is transformed into a compact parameter-based descriptor structure with specific field definitions and length constraints. This parameterization allows precise service identification while maintaining efficient bandwidth utilization through optimized data representation.
Data Source
AI summary
The disclosure is disclosed an apparatus of processing an image and a method thereof. According to the present invention, the method of transmitting a broadcast signal for 3-dimensional, 3D, service, may include encoding video data for a 3D service into a stream, generating first service information including a first descriptor including first information for specifying that a type of the stream is a video stream and second information for specifying a type of a component included in the video stream is a 3D video component and transmitting a broadcast signal including the encoded stream and the generated service information.