Anamorphic 3D Display Rendering via Accelerometer Pose Tracking
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Solution Overview
Problem
Handheld devices struggle to render realistic 3D graphics without external sensors, as existing technologies rely on remote head tracking, which increases latency and requires glasses for holographic displays.
Innovation Solution
The method involves using accelerometer data to determine the handheld device's pose and generate an asymmetric anamorphic projection matrix, allowing for real-time rendering of 3D geometry that appears holographic without external sensors, by distorting the display image based on device orientation, and optionally using eye-tracking software for enhanced accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If remote head tracking is used for holographic displays, then 3D rendering accuracy is improved, but latency increases and external sensors are required
Solution Approach 1:
The patent extracts the head tracking functionality from external remote sensors and relocates it to the device's built-in accelerometer, eliminating the need for external tracking equipment while reducing latency by using locally available sensor data
Solution Approach 2:
The device uses its own built-in accelerometer to perform head tracking and pose estimation, making the system self-sufficient without requiring external sensors or tracking equipment, thereby reducing system complexity and latency
2Reliability
If asymmetric anamorphic projection is applied, then holographic effect is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic adjustment of the asymmetric anamorphic projection parameters based on real-time accelerometer data, allowing the rendering to adapt to device orientation changes while maintaining computational efficiency through optimized projection matrices
Solution Approach 2:
The system changes rendering parameters (projection matrix, view orientation) based on accelerometer readings, dynamically adjusting the anamorphic distortion to create the holographic effect without requiring complex hardware modifications
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 a holographic-style display on handheld devices with reduced latency, as it relies solely on device accelerometer data, allowing objects to appear in front of or behind the screen plane, and smoothly switches between landscape and portrait orientations, providing a realistic 3D experience without the need for external tracking or glasses.
Implementation Method 1
handheld devices have been introduced which include tilt sensors (accelerometers). The accelerometers allow applications to sense and respond to changes in spatial orientation as the device is tilted in different axes
Data Source
AI summary
Techniques are disclosed for rendering an anamorphic projection of 3D scene geometry on a handled device using a correct asymmetric perspective geometry projection. Once pose of the handheld device is determined, a relative eye position may be inferred when the device is tilted away from an initial or default pose, based on data supplied by accelerometers. Thus, embodiments of the invention result in a holographic style display without the need for glasses or external sensing attachments.