LCMP3D System for Reducing Geometric Distortion in 3D Displays
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Solution Overview
Problem
Current virtual reality systems fail to provide realistic three-dimensional displays with minimal geometric distortion, especially when users move, due to excessive overall delay in image rendering and tracking, which causes visual discomfort and limits their application to static or distant use.
Innovation Solution
The implementation of a Lag Compensated MP3D (LCMP3D) system that predicts viewer position and compensates for overall delay using active controlled markers, smart cameras, tracing windows, increased tracking cameras, ALAP rendering, and calibrated tracking means to ensure accurate and timely image rendering for multiple users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional visualization means are used with flat panels, then the device complexity is reduced, but the realism of three-dimensional display deteriorates due to inability to provide true depth perception
Solution Approach 1:
The patent segments the display system into multiple independent components: multiple display devices arranged in space, optical sensor arrays for tracking, and separate processing units for rendering. This segmentation allows each component to be optimized independently while achieving realistic 3D display through their coordinated operation.
Solution Approach 2:
The patent transitions from two-dimensional flat panel displays to three-dimensional spatial display by arranging multiple display devices in three-dimensional space. This dimensional change enables true depth perception and realistic 3D visualization by presenting images at different spatial positions and depths.
2Adaptability or versatility
If image rendering is performed in real-time for moving users, then the adaptability to user movement is improved, but the overall delay increases causing geometric distortions
Solution Approach 1:
The patent applies preliminary action by predicting user position before actual image rendering. The system estimates where the user will be based on current movement data and prepares the image in advance, then adjusts the image after rendering to compensate for the delay. This allows real-time adaptability while minimizing geometric distortions.
Solution Approach 2:
The patent implements feedback by continuously tracking user position and movement, comparing it with the rendered image, and adjusting subsequent images based on the discrepancy. This closed-loop feedback system compensates for rendering delay and maintains geometric accuracy despite real-time requirements.
3Measurement precision
If multiple optical sensor arrays are used for precise tracking, then the measurement precision of user position is improved, but the device complexity increases
Solution Approach 1:
The patent divides the tracking system into multiple distributed optical sensor arrays positioned at different locations. Each array independently tracks user position, and the results are fused to provide comprehensive precision. This segmentation enables high measurement precision while keeping each individual sensor unit simple.
Solution Approach 2:
The patent makes the optical sensor arrays universal by using them for multiple functions: tracking user position, determining orientation, and providing data for image rendering adjustments. This multi-functionality justifies the complexity by delivering multiple benefits from the same hardware components.
4Adaptability or versatility
If images are displayed for multiple users simultaneously, then the adaptability to multiple users is improved, but the loss of time for processing increases
Solution Approach 1:
The patent segments the image processing into separate parallel processing streams, with each user's image rendered independently. This allows simultaneous processing of multiple user images without significant time penalty, as the operations can be executed in parallel rather than sequentially.
Solution Approach 2:
The patent applies preliminary action by pre-processing common elements for multiple users before individual rendering. Shared computational tasks are performed once and reused for all users, reducing the overall processing time required to generate images for multiple users simultaneously.
Data Source
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AI summary
A system for displaying three-dimensional objects using two-dimensional visualization means simultaneously providing at least effects of binocular parallax and motion parallax, the system comprising: at least one display configured to display a sequence of images; at least one pair of glasses configured to provide stereoscopic separation of images, the glasses comprising at least two optical shutters and at least two markers; at least two optical sensor arrays; at least two reading and processing devices configured to read data from an area of the optical sensor array and to determine 2D coordinates of the markers; at least one marker coordinates prediction device configured to extrapolate coordinates of the markers so as effective overall delay does not exceed 5 ms; a marker 3D coordinates calculation device; a 3D scene formation device; and at least one image output device. The invention also includes a corresponding method of displaying three-dimensional objects and provides realistic representation of three-dimensional objects for one or more viewers.