UAV Imaging Distance Calculation for Zoom-Free Accuracy
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Solution Overview
Problem
Existing methods for image capture by unmanned air vehicles require frequent adjustments in camera zoom and flight height to achieve desired measurement accuracy, leading to inefficiencies and increased battery consumption, processing load, and memory usage, while also compromising image quality due to the need for digital zoom which degrades image quality.
Innovation Solution
A system that calculates the distance between the object and the imaging device based on the rectangular size of the object and environmental factors like illumination and weather, allowing for efficient image capture without changing the camera zoom, thereby optimizing battery, processing, and memory usage while maintaining high image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the height of the unmanned air vehicle is reduced to achieve desired measurement accuracy, then the measurement precision is improved, but the data amount of images becomes massive, affecting battery capacity, processing performance, and memory capacity
Solution Approach 1:
The system performs preliminary calculation of the appropriate height before actual imaging. The calculation unit computes the optimal flight height based on the imaging requirements and object characteristics, allowing the unmanned air vehicle to fly at the pre-calculated height and capture images with the desired measurement accuracy without generating excessive data
Solution Approach 2:
Instead of capturing complete high-resolution images of the entire area, the system calculates and captures only the necessary portions at the appropriate height. The calculation unit determines the minimal required imaging parameters to achieve the desired measurement accuracy, reducing unnecessary data capture while maintaining precision
2Measurement precision
If the zoom factor of the camera is changed to achieve desired measurement accuracy, then the measurement precision is improved, but the image quality deteriorates due to digital zoom or requires more expensive optical zoom lenses
Solution Approach 1:
The system changes the flight height parameter instead of changing the camera zoom factor. By adjusting the distance between the camera and the object through height control, the system achieves the desired measurement accuracy while maintaining optimal image quality. The calculation unit determines the appropriate height that provides the required precision without requiring zoom operations
3Use of energy by moving object
If the unmanned air vehicle flies at higher altitude to reduce battery consumption and data amount, then the energy usage is reduced, but the measurement precision decreases
Solution Approach 1:
The system performs preliminary calculation to determine the optimal flight height that balances energy consumption and measurement precision. The calculation unit computes the appropriate height before flight, allowing the unmanned air vehicle to fly at the most energy-efficient altitude that still achieves the required measurement accuracy, avoiding both excessive height (which reduces precision) and unnecessary low-altitude flight (which increases energy consumption)
Data Source
AI summary
The present invention is to provide a system to take an image efficiently at a measurement accuracy which the user desires without changing the zoom factor of the camera. The system for calculating a distance 1 of the present invention includes an airborne imaging device 2 and a controller 3. The control unit 40 of the airborne imaging device 2 performs the rectangular size acquisition module 41 and acquires the rectangular size of an object to be imaged that is computer analyzable. Then, the control unit 40 performs the distance calculation module 42 and calculates the distance between the object to be imaged and the imaging device based on the rectangular size acquired by the processing of the rectangular size acquisition module 41.