3D Image Generation Using Screen Distance Parameter
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Solution Overview
Problem
Determining the positions and directions of cameras in a virtual three-dimensional space for stereoscopic display is challenging due to the dependency on camera interval and convergence angle parameters, making it difficult to intuitively align the virtual screen, which affects the recognizability of the three-dimensional image.
Innovation Solution
A three-dimensional image generation device and method that acquires a screen distance parameter and perspective parameter to determine the positions and directions of cameras, allowing for easier generation of stereoscopic images by using these parameters to calculate the camera positions and angles of view, thereby simplifying the alignment of the virtual screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If camera interval parameter and convergence angle parameter are used to determine camera positions and directions, then stereoscopic display can be achieved, but the virtual screen position becomes difficult to align intuitively
Solution Approach 1:
The patent changes the parameter system from using camera interval and convergence angle to using virtual screen position and camera-to-screen distance parameters. This transformation makes the virtual screen alignment intuitive because the virtual screen position parameter directly controls where the screen appears in the three-dimensional space, eliminating the complex indirect relationship that existed with the old parameters.
2Productivity
If camera positions are determined based on camera interval and convergence angle, then stereoscopic image generation is possible, but time and effort are required to align virtual screen correctly
Solution Approach 1:
The patent performs preliminary determination of camera positions and directions based on the intuitively specified virtual screen position and camera-to-screen distance. By pre-calculating the optimal camera configuration from these intuitive parameters, the system eliminates the need for iterative adjustment and trial-and-error alignment, significantly reducing the time required to achieve correct virtual screen alignment.
3Loss of information
If two parameters (camera interval and convergence angle) are used to define camera positions, then camera placement is determined, but the relationship between parameters and virtual screen position is not intuitive
Solution Approach 1:
The patent extracts the virtual screen position as a separate, independently controllable parameter from the camera positioning parameters. Instead of having camera interval and convergence angle indirectly determine screen position, the system now directly uses virtual screen position and camera-to-screen distance as the controlling parameters, making the relationship between parameters and screen position transparent and intuitive.
Data Source
AI summary
Three-dimensional image generation is used for generating, as images to be used for stereoscopic display, two images showing a scene within a virtual three-dimensional space viewed from two points of view set in the virtual three-dimensional space, the three-dimensional image generation includes: acquiring a value of a screen distance parameter, which indicates a distance from a representative position for the two points of view to a virtual screen position in the virtual three-dimensional space; and generating, as the images to be used for the stereoscopic display, the two images showing the scene within the virtual three-dimensional space viewed from the two points of view disposed at positions and in directions that are determined based on the acquired value of the screen distance parameter.