Multi-view Display Calibration via Beamlet Visibility Matrix
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Solution Overview
Problem
Multi-view displays face challenges in achieving precise alignment and calibration due to uncertainties in installation and environment geometry, making it difficult to show different images to various viewers without extensive adjustments, which limits their wider adoption.
Innovation Solution
A multi-view display system that uses multi-view pixels capable of independently controlling the spatial distribution of emitted light, with a calibration process involving a camera to record images and derive lists of beamlets visible from different locations, allowing for precise adjustment and alignment of beamlets to display distinct images to different viewers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-view displays are installed in different environments with varying geometry, then the display can be deployed in diverse locations, but precise alignment and calibration become difficult requiring extensive adjustments
Solution Approach 1:
The system performs preliminary calibration by capturing images of the display from multiple predetermined viewer positions during installation. These images are used to pre-calculate beamlet visibility matrices and determine which beamlets are visible from each position, storing this information for later use without requiring real-time adjustments
Solution Approach 2:
The system creates a digital model (copy) of the physical display geometry and viewing environment by capturing images and processing them into a computational representation. This digital model includes the beamlet visibility matrix that replicates the optical properties of the physical display, allowing virtual calibration and testing before actual deployment
2Manufacturing precision
If traditional calibration methods are used for multi-view displays, then the process requires extensive manual adjustments, but achieving precise alignment is necessary for different viewers to see distinct images
Solution Approach 1:
The system replaces manual mechanical adjustment procedures with an automated computational method. Instead of physically adjusting beamlet positions through trial and error, the system uses image processing algorithms to calculate the optimal beamlet configuration based on captured images, automatically generating the beamlet visibility matrix without mechanical intervention
Solution Approach 2:
The display system performs self-calibration by automatically capturing its own images from multiple positions, processing these images to determine beamlet visibility, and generating the calibration data without requiring external operators to manually adjust each beamlet. The system calibrates itself through the calibration controller and processing pipeline
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
The system enables efficient calibration and alignment of multi-view displays, allowing different viewers to see distinct images without the need for extensive adjustments, enhancing the usability and image quality of multi-view displays.
Implementation Method 1
A multi-view display system that uses multi-view pixels capable of independently controlling the spatial distribution of emitted light, with a calibration process involving a camera to record images
Data Source
AI summary
A multi-view display is display capable of simultaneously showing different images to viewers that see the display from different locations. Viewers do not see the images intended for other viewers at other locations. A multi-view display forms images via a collection of multi-view pixels, which are the devices that make such image customization possible. A multi-view pixel is able to emit different light in different directions; in each direction, parameters of emitted light such as brightness, contrast, etc., can be controlled independently of the light emitted in other directions. In order for the display to generate good-quality images, it is useful to perform a calibration of the display that will yield accurate information about the relationships of light emitted by multi-view pixels and locations where images are to be made viewable. Embodiments of the present invention provide calibrations that achieve the desired result efficiently and accurately.