3D Image Rendering via Virtual Viewpoint Mapping
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Solution Overview
Problem
Current methods for providing three-dimensional (3D) images, particularly in augmented reality, face challenges in accurately rendering depth perception without the need for glasses, as they often rely on optical systems that require complex calculations and can result in artifacts due to approximations in refractive index differences.
Innovation Solution
A method that calculates virtual viewpoints based on eye position information and optical system characteristics, generating stereo images within a graphic space coordinate system, and rendering 3D images using these viewpoints through an optical system, which includes determining frustum information and object poses to create a seamless depth perception experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical systems (mirror or lens) are used to provide 3D images, then depth perception is enabled, but the direction of light must be changed which complicates rendering calculations
Solution Approach 1:
The patent creates virtual viewpoints that represent the optical transformation of real viewpoints through the optical system. Instead of performing complex ray-tracing calculations for each pixel, the system pre-calculates and stores virtual viewpoint positions that already account for the optical system's light direction changes. This copying approach replaces complex computational processes with pre-computed reference data.
Solution Approach 2:
The patent performs preliminary calculation of virtual viewpoints based on the optical system's characteristics before actual 3D image rendering. By pre-computing the transformed viewpoint positions that account for mirror or lens light direction changes, the system prepares rendering parameters in advance, avoiding complex real-time calculations during the rendering process.
2Device complexity
If approximations in refractive index differences are used in optical systems, then device complexity is reduced, but artifacts appear in the rendered 3D image
Solution Approach 1:
The patent creates accurate virtual viewpoints that copy the precise optical transformation effects without using approximations. By calculating virtual viewpoint positions that exactly represent how light passes through the optical system, the system avoids artifacts while maintaining computational feasibility through pre-computed reference data rather than real-time complex physics calculations.
3Measurement precision
If physical control of optical elements is implemented, then optical precision is improved, but device complexity and control requirements increase
Solution Approach 1:
The patent replaces physical control of optical elements with computational control through virtual viewpoints. Instead of mechanically adjusting mirrors or lenses to achieve precise light direction, the system uses software-based virtual viewpoint calculations that represent the desired optical transformation, eliminating complex mechanical control systems while maintaining optical precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables the accurate and efficient rendering of 3D images, reducing artifacts and eliminating the need for physical control of optical elements, thereby providing a more intuitive and realistic augmented reality experience without the requirement for glasses.
Implementation Method 1
A 3D image is provided through an optical system such as a mirror or a lens. In this example, a direction of light is changed by the optical system.
Data Source
AI summary
A method and apparatus for outputting a three-dimensional (3D) image are provided. To output a 3D image, a stereo image is generated based on viewpoints of a user and rendered into a 3D image. Since the stereo image is generated based on the viewpoints of the user, the user views a different side of an object appearing in the 3D image depending on a viewpoint of the user.