3D Content Disparity Embedding for Healthy Viewing
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Solution Overview
Problem
Current 3D content capture and delivery methods fail to ensure healthy 3D viewing experiences due to unpredictable 3D characteristics and lack of mechanisms to adjust for varying viewing conditions, leading to discomfort and eye strain.
Innovation Solution
A new method for 3D content creation, packaging, and consumption that embeds 3D characteristics such as minimum and maximum disparity values into the content, allowing for accurate rendering and adjustment to match viewing conditions, ensuring a healthy 3D experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If 3D content is captured with fixed camera parameters (baseline and convergent angle), then the content can be delivered efficiently, but the 3D characteristics may not match various viewing conditions causing unhealthy viewing experience
Solution Approach 1:
The patent calculates and embeds minimum and maximum disparity values into the 3D content during the content creation or packaging stage. This preliminary calculation allows the content to carry essential 3D characteristic information that can be used later by terminals to adjust rendering parameters according to actual viewing conditions, thus resolving the contradiction between efficient delivery and adaptability.
2Object-affected harmful factors
If disparity values are calculated from 3D content to ensure healthy viewing, then viewing health can be improved, but the computation becomes intensive
Solution Approach 1:
The patent performs the computationally intensive disparity calculation (using methods like depth buffer analysis or stereo matching) during content creation or packaging rather than during terminal rendering. The results are embedded as metadata in the content stream, shifting the computational burden from the terminal to the content preparation stage, thus improving viewing health without excessive terminal power consumption.
Solution Approach 2:
Instead of calculating disparity values in real-time at the terminal, the patent creates a copy of the essential 3D characteristic information (minimum and maximum disparity values) and embeds it in the content stream. The terminal then uses this pre-calculated information to guide rendering adjustments, avoiding intensive real-time computation while still achieving healthy viewing outcomes.
3Speed
If 3D content is rendered without knowing content characteristics, then rendering can be performed quickly, but the 3D experience becomes unhealthy due to mismatched disparity values
Solution Approach 1:
The patent embeds minimum and maximum disparity values into the 3D content stream as metadata. The terminal extracts these values and uses them to provide feedback to the rendering process by adjusting disparity compensation parameters. This feedback mechanism ensures that rendering remains relatively fast while producing healthy 3D viewing experiences, as the terminal only needs to apply pre-calculated guidance rather than performing complex real-time analysis.
Data Source
AI summary
The current invention provides methods for 3D content capturing, 3D content coding and packaging at content production side, and 3D content consuming and rendering at display or terminal side, in order to ensure healthy and effective 3D viewing all the time. According to the current invention, maximum disparity and 3D budget, which are scene dependent, are calculated, utilized for coding and embedded in the coded streams or media file, and checked against the allowable values during the content rendering, so to determine if the same 3D content can be shown to the user according to the viewing condition which the user has. In the case where a healthy 3D viewing guideline cannot be met, it is suggested to adjust the 3D content for its new maximum disparity and 3D budget to be within the allowable range, to achieve healthy and effective 3D viewing for that user with his/her viewing condition.