Multi-resolution Aerial Camera System for Survey Efficiency
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Solution Overview
Problem
Existing aerial camera systems require high overlap in aerial photos for accurate photomosaics, which is costly in terms of flying time and processing, and are often aircraft-specific, limiting operational parameters and image resolution.
Innovation Solution
The HyperCamera system employs a compact multi-resolution camera setup with five detail cameras and a wider-angle overview camera, allowing for reduced overlap and increased efficiency while maintaining accuracy, and is adaptable to various aircraft through a standardized installation method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high overlap (60% longitudinal, 40% lateral) is used to ensure accurate photomosaic creation, then photomosaic accuracy is improved, but flying time and processing time increase significantly
Solution Approach 1:
The camera system is segmented into multiple cameras with different focal lengths (e.g., 28mm and 85mm lenses), where each camera captures images at different resolutions and coverage areas. This segmentation allows the system to use lower overlap for the wide-angle overview camera while maintaining accuracy through the combination of multiple views, thereby reducing total flying time and processing requirements compared to traditional single-camera high-overlap systems.
2Measurement precision
If an external camera pod is used to achieve multi-resolution imaging, then photomosaic accuracy is improved through better overlap utilization, but the system becomes highly aircraft-specific and requires significant design and certification effort
Solution Approach 1:
The camera system is designed with universal mounting capabilities that can be installed in various aircraft types without requiring aircraft-specific custom pods. The system uses standardized mounting brackets and interfaces that can accommodate different aircraft configurations, thereby achieving multi-functionality across various survey platforms while reducing design and certification efforts compared to dedicated external pods.
3Volume of moving object
If constrained space within an external pod is used, then the pod remains compact and attachable, but the size and focal length of camera lenses are limited, restricting operating altitude range
Solution Approach 1:
The system merges multiple cameras with different focal lengths into a single integrated mounting structure, eliminating the need for a large external pod. By combining the overview camera (wide-angle) and detail camera (telephoto) in one compact unit mounted within the aircraft fuselage, the system achieves multi-resolution imaging without the space constraints of external pods, thereby enabling a broader operating altitude range while maintaining a compact form factor.
Data Source
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AI summary
A system for capturing aerial images, the system comprising at least one overview camera, a plurality of detail cameras, and a frame for holding the cameras, each detail camera having a longer focal length than the at least one overview camera, each detail camera mounted at a different angle laterally so that the fields of view of the detail cameras overlap to form an extended lateral field of view, the frame attachable to the floor of an aircraft above a camera hole, thereby providing the cameras with a view of the ground below the aircraft through the camera hole.