AIMS Multi-Modal Aerial Survey System Supports High-Precision 3D Reality Modeling in Wuhan

Dec 13, 2025

Wuhan, acclaimed as China's “Capital of Remote Sensing,” is situated at the confluence of the Yangtze and Han Rivers. The city is home to the historic poetry of the Yellow Crane Tower and the serene beauty of East Lake, while also pulsating with the momentum of modern technology.

Wuhan's central urban area, characterized by dense building clusters and complex airspace conditions near major aviation facilities, presented significant challenges for high-resolution oblique aerial photography. To successfully complete the 3D reality modeling of the 616 km² central urban area, the project utilized the AIMS Multi-Modal Aerial Survey System, independently developed by Feiyan Remote Sensing, achieving efficient, safe data acquisition and high-quality 3D modeling. The project collected 492,000 oblique images and produced outcomes including 3D Mesh models, Digital Elevation Models (DEMs), and Digital Surface Models (DSMs). All data were integrated into a spatiotemporal data platform, forming a unified citywide 3D spatial digital base. 

Technical Highlights

Multi-Modal Synchronized Acquisition: The AIMS system simultaneously acquires oblique 3D imagery, large-format digital aerial images, LiDAR point clouds, and hyperspectral data in a single flight, effectively supporting the production of various products while enhancing model accuracy and image quality.

Ultra-High-Resolution Imaging: Utilizing a 90mm/110mm focal length combination and a flight altitude of 600 meters, the system achieved a ground resolution better than 0.03 meters, exceeding project requirements by 25%.

Intelligent Data Processing: By leveraging POS data for solar radiation correction of multi-angle images and applying a self-developed color harmonization algorithm, the system significantly improved color consistency and visual quality.

Applications and Outcomes

Territorial Planning and Urban Renewal: In multiple urban renewal and key architectural projects, 3D reality models were used for site evaluation, building design comparison, and planning indicator verification, enabling precise analysis and decision-making in a 3D environment.

Integrated Urban Management: The system supported the renovation of old residential districts and area redevelopment projects, allowing for rapid building area extraction and demolition scale assessment,which significantly reducing field survey and manual verification costs.

Ecological Protection and Disaster Prevention: Applied to mining area ecological monitoring and geological hazard identification and risk assessment, multi-temporal 3D data comparisons enabled dynamic monitoring and science-based prevention and control.