Stereo Camera Calibration Using a Mobile Aircraft Jig
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Solution Overview
Problem
The calibration work for stereo cameras in wide-area measurement applications is labor-intensive for operators, requiring significant manual effort for setting up calibration jigs and adjusting camera orientations.
Innovation Solution
An information processing device and method that utilize an unmanned aircraft as a mobile calibration jig, allowing cameras to capture images of the aircraft moving within their field of view, thereby automating the calibration process and reducing operator workload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual calibration methods are used for stereo cameras in wide-area measurement, then calibration accuracy can be achieved, but the work load and time consumption for operators increases significantly
Solution Approach 1:
The calibration jig performs self-calibration by autonomously moving through the measurement space and capturing images with the stereo camera. The jig's position is automatically tracked using markers and image processing, eliminating the need for manual position recording and reducing operator intervention to minimal supervision.
Solution Approach 2:
The patent replaces manual mechanical calibration operations with an automated system combining computer vision (camera image processing), marker detection algorithms, and coordinate transformation calculations. The calibration data is automatically extracted from images and processed through computational algorithms rather than manual measurement and calculation.
2Adaptability or versatility
If the measurement range is expanded for stereo camera calibration, then the applicability of the system improves, but the complexity of manual calibration operations increases
Solution Approach 1:
The calibration jig is designed as a universal platform that can be used for calibrating stereo cameras across different measurement ranges and applications. It incorporates standardized markers and positioning mechanisms that work consistently whether calibrating for a small workspace or large-area measurement, eliminating the need for application-specific calibration procedures.
Solution Approach 2:
The calibration jig transitions from static manual positioning to dynamic automated movement through the measurement space. The system captures images at multiple positions along predefined paths, automatically adapting to the required measurement range by adjusting the number and distribution of calibration positions without increasing operational complexity.
3Ease of operation
If automated calibration using mobile calibration jig is implemented, then operator workload is reduced, but the requirement for automated positioning and image processing systems increases
Solution Approach 1:
The calibration jig serves as an intermediary device that bridges the gap between simple camera installation and complex automated calibration. It provides standardized markers and positioning references that enable automatic image processing algorithms to extract calibration data, transforming a complex calibration task into a straightforward image capture and processing workflow.
Data Source
AI summary
An information processing device (100) according to an aspect of the present disclosure includes a control unit (150). A control unit (150) executes calibration processing of a plurality of cameras by using an image for calibration processing obtained by photographing a mobile body with the plurality of cameras while moving the mobile body whose movable range is not limited as a jig for calibration.