Multi-Spectral Calibration Tool for Simultaneous Sensor Alignment
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Solution Overview
Problem
Current calibration methods for multiple sensors, such as visual, thermal, and range sensors, are inefficient and less accurate due to the need for multiple different checkerboard targets.
Innovation Solution
An unpowered calibration tool with a plurality of geometric objects configured to be perceived in different ways by various sensors, allowing for simultaneous calibration of visual spectrum, thermal, and range sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple different checkerboard targets are used for calibrating different sensors, then each sensor can be calibrated, but the calibration process becomes time-consuming and less accurate due to multiple reference units
Solution Approach 1:
The patent combines multiple calibration targets for different sensors into a single integrated calibration target. This target includes multiple geometric patterns (e.g., checkerboard patterns, circular patterns, triangular patterns) that can be simultaneously detected by different sensor types (visual, thermal, range sensors), eliminating the need for separate calibration targets for each sensor and reducing calibration time while maintaining accuracy
Solution Approach 2:
The calibration target is designed with multi-functionality to serve multiple sensor types simultaneously. Different regions of the target provide reference information for different sensor modalities (visual, thermal, range), allowing one target to perform the calibration function for multiple sensors that would traditionally require separate specialized targets
2Adaptability or versatility
If multiple different checkerboard targets are used for different sensors, then each sensor type can be calibrated, but the device complexity and number of reference units increases
Solution Approach 1:
The patent merges multiple calibration reference units into a single integrated target structure. This unified target includes multiple geometric patterns and reference markers that can be detected by different sensor types, reducing the number of separate reference units needed while maintaining comprehensive sensor calibration coverage
Solution Approach 2:
The calibration target is designed as a universal reference that can be detected and interpreted by multiple sensor types simultaneously. Different portions of the target provide calibration information for visual, thermal, and range sensors, allowing a single target to serve multiple calibration functions that would traditionally require separate specialized targets
Data Source
AI summary
Disclosed herein is an unpowered calibration tool, a system, and a method for performing multi-sensor calibration. An unpowered calibration tool includes a plurality of geometric objects disposed adjacent to each other, the geometric objects are configured to be perceived in one of two different ways for a first type of sensor and one of two different ways for a second type of sensor.