UAV Sample Point Planning for Low-Overlap Survey Mapping
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Solution Overview
Problem
Traditional UAV-based aerial survey methods require high overlap between photos for stitching, leading to inefficient data processing and high costs, especially for large areas or small plots of land, due to the need for multiple overlapping photos and complex operations.
Innovation Solution
A method and apparatus for planning sample points that involve acquiring a reference photographing location point and determining auxiliary points based on a combined shooting point set, allowing the UAV to take fewer photos with reduced overlap, thereby improving efficiency and reducing processing time and hardware costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional UAV-based aerial survey method is used with high overlap between photos, then stitching reliability is improved, but processing time increases and efficiency decreases
Solution Approach 1:
The patent extracts only the necessary overlapping regions between photos for stitching purposes, rather than requiring extensive overlap across the entire photo set. By identifying and processing only the critical overlapping areas, the system maintains stitching reliability while significantly reducing the total number of photos that need to be processed and stitched together.
Solution Approach 2:
The patent segments the surveying area into multiple sub-regions, each covered by a smaller set of photos with moderate overlap. This segmentation allows the system to process and stitch smaller photo sets independently, reducing overall processing time while maintaining sufficient overlap for reliable stitching within each segment.
2Area of stationary object
If multiple photos with high overlap are taken for large-area surveying, then coverage completeness is improved, but hardware cost and operation complexity increase
Solution Approach 1:
The patent divides large surveying areas into multiple smaller sub-regions that can be covered by fewer photos each. The system processes these segments separately and combines them, reducing the total number of photos required compared to traditional methods that require high overlap across the entire large area. This segmentation also simplifies operation and processing complexity.
Solution Approach 2:
The patent applies partial overlap between photos in segmented regions rather than requiring excessive overlap across the entire survey area. By using moderate overlap within segments and combining segments strategically, the system achieves complete coverage with fewer photos, reducing hardware costs and operational complexity.
3Power
If photos are uploaded to server for stitching processing, then processing capability is improved, but data upload time and overall processing time increase
Solution Approach 1:
The patent segments the photo set into smaller groups corresponding to different surveying sub-regions. These smaller photo sets can be processed more efficiently, allowing partial processing to occur locally or in smaller batches on the server, reducing the time required for data upload and processing compared to uploading and processing all photos simultaneously.
Solution Approach 2:
The patent performs preliminary organization and segmentation of photos before upload, preparing the data in an optimized format for server processing. This preliminary action reduces the complexity of server-side processing and minimizes upload time by organizing data into manageable segments that can be processed more efficiently.
Data Source
AI summary
A method for planning sample points for surveying and mapping is disclosed, which includes: acquiring a reference photographing location point corresponding to a region to be surveyed and mapped, and establishing a mapping relation between one shooting point in a combined shooting point set and the reference photographing location point; determining a plurality of auxiliary photographing location points corresponding to the reference photographing location point based on the mapping relation preset relative positional relations between the shooting points in the combined shooting point set; and using the reference photographing location point and the plurality of auxiliary photographing location points as sample points for surveying and mapping based on which an unmanned aerial vehicle for surveying and mapping performs surveying and mapping in the region to be surveyed and mapped. An apparatus for planning sample points for surveying and mapping, a control terminal, and a storage medium are also disclosed.