3D Video Overlay Embedding via Layer Separation
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Solution Overview
Problem
Existing scalable 3D video systems face challenges in efficiently embedding subtitles and graphic overlays, particularly in frame compatible systems, as current methods either complicate the design with additional hardware or require reprocessing of base layer information, which is costly and less flexible.
Innovation Solution
The method involves providing subtitles and graphic overlays separately for each layer in a scalable 3D video system, using a base layer and enhancement layers, where overlays are added before multiplexing, and utilizing a predictor module to generate enhancement layer overlays from base layer data, ensuring full resolution reconstruction without significant design penalties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods are used to embed subtitles and graphic overlays in scalable 3D video systems, then the design becomes more complex with additional hardware requirements, but this increases the device complexity and reduces ease of manufacture
Solution Approach 1:
The patent extracts the subtitle and graphic overlay embedding function from the video encoding process itself, treating it as a separate post-processing operation. This allows the embedding functionality to be implemented in software rather than requiring additional hardware within the encoding device, thereby reducing hardware complexity while maintaining reliable embedding capability.
Solution Approach 2:
The patent introduces a separate embedding module that acts as an intermediary between the video encoder and the final output. This module receives encoded video frames and independently processes subtitle and graphic overlay insertion, eliminating the need for complex integrated hardware and simplifying the overall system architecture.
2Manufacturing precision
If base layer information is reprocessed to embed subtitles and overlays, then full resolution reconstruction is achieved, but this increases processing cost and reduces flexibility
Solution Approach 1:
The patent performs the embedding of subtitles and graphic overlays at the enhanced layer level before the final reconstruction process. By preparing the overlay information in advance at the appropriate resolution level, the system avoids the need to reprocess the entire base layer information, thereby maintaining full resolution reconstruction while improving processing efficiency.
Solution Approach 2:
The patent segments the embedding process into separate operations: first embedding subtitles and overlays at the enhanced layer level, then performing the reconstruction process independently. This segmentation allows each operation to be optimized separately, avoiding the computational burden of reprocessing base layer information while still achieving full resolution output.
3Adaptability or versatility
If additional hardware is added to support subtitles and overlays, then embedding capability is improved, but this reduces ease of manufacture and increases device complexity
Solution Approach 1:
The patent replaces the need for additional physical hardware with a software-based embedding solution. The embedding functionality is implemented through software modules that process video frames computationally, eliminating the requirement for extra hardware components and thereby simplifying manufacturing while maintaining versatile embedding capability.
Data Source
AI summary
Full resolution graphic overlays (e.g., graphics, menus, arrows, buttons, captions, banners, picture in picture information) and subtitles in frame compatible 3D delivery for a scalable system are described.