Stereoscopic Modeling Effective Inter-ocular Distance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing stereoscopic modeling systems cannot account for the outward divergence of human eyes, limiting the maximum positive parallax that can be achieved in computer-generated scenes, which restricts the depth perception and 3D effect.
Innovation Solution
Computing an effective inter-ocular distance based on a maximum ocular divergence angle, viewing distance, and inter-ocular distance, allowing for greater positive parallax without requiring outward divergence of the viewer's eyes, by using the formula e′=e+2Vz tan(γ), where e is the inter-ocular distance, Vz is the viewing distance, and γ is the maximum ocular divergence angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the positive parallax is increased to enhance the 3D effect and depth perception, then the stereoscopic effect is improved, but the viewer's eyes require outward divergence which causes discomfort
Solution Approach 1:
The patent changes the parameter of inter-ocular distance from a fixed value to a variable value that depends on the viewing distance. By using the formula e' = e + 2*Vz*tan(γ), where e is the standard inter-ocular distance, Vz is the viewing distance, and γ is the maximum ocular divergence angle, the system dynamically adjusts the effective inter-ocular distance to accommodate increased positive parallax without requiring actual eye divergence, thus enhancing the 3D effect while preventing viewer discomfort
2Measurement precision
If the distance between left and right images is increased to improve depth perception, then the parallax is increased, but the system cannot account for outward divergence of human eyes
Solution Approach 1:
The patent introduces a new parameter called 'effective inter-ocular distance' that incorporates the viewing distance and maximum ocular divergence angle. This parameter allows the system to accurately model the relationship between camera positions and viewer perception, enabling precise control of parallax while accounting for the physiological limits of human eye divergence
Solution Approach 2:
The patent uses the effective inter-ocular distance as an intermediary parameter that mediates between the camera configuration and the viewer's physiological constraints. This intermediary allows the system to translate camera positions into accurate stereoscopic images that respect human visual capabilities
Data Source
AI summary
A computer-implemented method for computing an effective inter-ocular distance for a modeled viewer based on a maximum ocular divergence angle. A maximum ocular divergence angle, viewing distance, and an inter-ocular distance are obtained for the modeled viewer. An effective inter-ocular distance is computed based on the viewing distance, the inter-ocular distance, and the maximum ocular divergence angle. The effective inter-ocular distance represents the maximum positive parallax for the modeled viewer having the defined maximum ocular divergence angle. The effective inter-ocular distance may be used in a stereoscopic modeling system in place of the inter-ocular distance, the stereoscopic modeling system relating a set of parameters in a camera space to a set of parameters in viewer space. The stereoscopic modeling system may be a stereoscopic transformation.