Stereoscopic Camera Toe-In Angle Control for Visual Fatigue Reduction
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Solution Overview
Problem
Current stereoscopic camera devices suffer from visual vergence-accommodation conflict (VAC), leading to visual fatigue and discomfort, and are not suitable for capturing objects close-range or displaying stereoscopic images behind a screen.
Innovation Solution
A stereoscopic camera device comprising a first and second camera, and a controller that synthesizes images and controls the cameras to achieve toe-in angles greater than 0, or processes images to simulate such angles, allowing for the capture and display of stereoscopic images in front of or behind a 3D screen and suitable for close-range capturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the stereoscopic camera device uses two cameras with parallel optical axes to capture objects, then the device structure is simple and easy to manufacture, but visual vergence-accommodation conflict occurs causing visual fatigue and discomfort
Solution Approach 1:
The patent changes the optical parameters of the camera system by introducing toe-in angles for the optical axes of the two cameras. Instead of maintaining parallel optical axes (zero toe-in angle), the cameras are angled inward toward the optical axis, creating non-zero toe-in angles. This parameter change resolves the visual vergence-accommodation conflict while maintaining manufacturing feasibility through controlled optical alignment.
Solution Approach 2:
The patent introduces dynamic adjustment capability for the toe-in angles of the camera optical axes. The cameras can adjust their angular positions to achieve optimal toe-in angles for different capturing scenarios, transforming a static parallel-axis configuration into a dynamic adjustable system that adapts to reduce visual fatigue.
2Ease of operation
If the stereoscopic camera device uses parallel optical axes, then the device is easy to operate, but it cannot display stereoscopic images behind the screen and is not suitable for close-range capturing
Solution Approach 1:
The patent modifies the operational parameters by enabling adjustment of toe-in angles. This allows the device to adapt to different operating conditions including close-range capturing and behind-screen display scenarios, expanding versatility while maintaining ease of operation through automated or guided adjustment mechanisms.
Solution Approach 2:
The system transitions from a fixed parallel-axis configuration to a dynamic configuration where toe-in angles can be adjusted based on capturing distance and display requirements. This dynamic adaptability enables the device to handle both close-range and far-range scenarios, as well as front and behind-screen display modes.
Data Source
AI summary
A stereoscopic camera device, including a first camera, a second camera, and a controller, is provided. The first camera is configured to capture toward an object to obtain a first image of the object. The second camera is configured to capture toward the object to obtain a second image of the object. The controller synthesizes the images to generate a stereoscopic image of the object. By the controller, the cameras are controlled, so that toe-in angles of an optical axis of the first camera and an optical axis of the second camera are greater than 0. The controller image processes the first image and the second image, so that the processed first image and the processed second image are equivalent to images captured when the toe-in angles of the optical axis of the first camera and the optical axis of the second camera are greater than 0.