3D Display Calibration Using Handheld Camera Feedback
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Solution Overview
Problem
Existing 3D display calibration systems require manual adjustment and expensive, calibrated imaging colorimeters, and lack automated closed-loop measurement systems to adapt to variations in display calibration and external lighting environments, especially in consumer settings.
Innovation Solution
A method and system using a handheld camera device with an unknown sensitivity function to measure light emitted by a 3D display, generating measurement data that emulate a reference camera's measurements, allowing for automatic calibration and dynamic correction of display parameters through a feedback loop involving a processor and remote server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual adjustment and expensive calibrated imaging colorimeters are used for 3D display calibration, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent uses a camera device to capture images of test patterns displayed on the 3D display, creating a digital copy of the visual output. This captured image data is then processed to extract calibration information, replacing the need for expensive calibrated imaging colorimeters while maintaining measurement capability through computational analysis of the captured images
Solution Approach 2:
The patent replaces manual adjustment procedures with an automated computational system. The processor automatically analyzes captured images, compares them against reference data, and generates calibration parameters, eliminating the need for manual intervention and reducing system complexity despite achieving high measurement precision
2Productivity
If automated closed-loop measurement systems are implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent implements a closed-loop feedback system where the camera captures test pattern images from the display, the processor analyzes these images to determine actual display characteristics, and calibration parameters are automatically adjusted based on the difference between measured and target values. This automated feedback loop enables rapid recalibration without manual intervention
Solution Approach 2:
The calibration system performs self-calibration by automatically capturing its own test patterns, analyzing the results, and adjusting its control parameters without external intervention. The system serves itself by using its own output as the measurement target, eliminating the need for complex external calibration equipment
3Adaptability or versatility
If recalibration in diverse consumer environments is enabled, then adaptability is improved, but measurement precision deteriorates
Solution Approach 1:
The system displays test patterns with known reference values before performing calibration measurements. By presenting predetermined test content with known characteristics, the system establishes a baseline for comparison that compensates for varying environmental conditions such as ambient lighting, enabling accurate calibration across diverse consumer environments
Solution Approach 2:
The patent adjusts calibration parameters based on environmental conditions detected during measurement. The system modifies its measurement and control parameters adaptively to account for varying lighting conditions, camera characteristics, and display settings, maintaining measurement precision across different environments through dynamic parameter adjustment
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
Enables efficient, automated calibration and adaptation of 3D displays to maintain optimal image quality across varying lighting conditions without the need for expensive equipment, facilitating recalibration in diverse environments, including consumer settings.
Implementation Method 1
a camera device (e.g., a handheld camera device) to calibrate such 3D displays... using a handheld camera device with an unknown sensitivity function to measure light emitted by a 3D display
Data Source
AI summary
Several embodiments of 3D display system and systems and methods for their calibration are disclosed herein. In one embodiment, a method and system for calibrating a 3D display using feedback indicative of measurements of light, emitted from the 3D display (typically during display of a test pattern), by a camera device. In one embodiment, the camera device is a handheld camera device including an inexpensive, uncalibrated camera. In another class of embodiments, a system including a 3D display (to be recalibrated), a video preprocessor coupled to the display, and a feedback subsystem including a camera device operable to measure light emitted by the display are also disclosed.