Dataset
FineAir is a high-resolution optical image dataset specifically designed for fine-grained airplane classification. The dataset leverages transponder data (TD) from FlightRadar24 to provide accurate labels for aircraft at various levels of granularity, including Finest-Grained Class (FtGC). FineAir is the first dataset to offer detailed airplane categorization in 30 cm spatial resolution optical images, addressing the limitations of existing datasets by enhancing annotation accuracy.
FineAir is created by matching satellite imagery with airplane transponder from FlightRadar24 data collected around the image acquisition time. This allows for accurate airplane labeling, including FtGC, which provides detailed information such as aircraft model variations (e.g., Airbus A320-200). The dataset comprises images from 29 airports, including major hubs such as Denver International Airport (DEN), covering an area 50 km². The images are sourced from different satellites with varying ground sample distances (GSD), which are normalized to 30 cm through upsampling and pansharpening. The images are processed using proprietary high-pass Laplacian filters to enhance edge details, ensuring superior object recognition and classification.
FineAir provides a hierarchical class structure:
Annotations are obtained from two primary sources:
Additionally, aircraft that cannot be labeled via TD or templates are assigned a general role (e.g., airliner, private jet, propeller). Military-related aircraft are tagged with the suffix "-Military."
To address imbalanced class distributions, FineAir introduces FineAir Class (FAC), a simplified categorization ensuring all airplanes have at least one class label. Rare classes (fewer than 50 instances) are merged into broader roles, and military aircraft are merged into their parent roles.
FineAir is divided into train, validation, and test sets, ensuring:
A random sampling process is performed to minimize the class distribution differences between the splits, ensuring reliable model evaluation.
1Institute for Applied Computer Science, University of the Bundeswehr Munich
2European Space Imaging, Germany
3Stuttgart University of Applied Sciences, Germany
In progress...
European Space Imaging (EUSI)
