Automotive

HeRCULES

Heterogeneous radar SLAM and place recognition

Car-mounted 4D radar, spinning radar and FMCW LiDAR recordings with stereo imagery and GNSS/INS references across revisited urban and mountain routes.

Metadata: Complete Metadata needs review

Quick facts

Vehicle type
Automotive
Environment
Outdoor
Data origin
Real-world
Sensor count
7
Ground truth
Available
Calibration
Parameters Only
Annotations
Not reported

Sensor overview

High-level sensor availability before the detailed sensor records below.

Ground truth

Reference scope, method, rate, coverage, and provenance.

Ground-truth references for HeRCULES
Scope Method Reference system Count Rate Coverage Reference provenance
External
Measured using equipment independent of the platform’s normal onboard sensor pipeline.
Derived
Computed primarily from the dataset’s own recorded sensors.
Hybrid
Combines independent reference equipment with onboard measurements.
6DoF GNSS / INS GNSS/INS · Hexagon NovAtel SPAN-CPT7 Not reported Not reported Unknown Reference provenance
External
Measured using equipment independent of the platform’s normal onboard sensor pipeline.
Derived
Computed primarily from the dataset’s own recorded sensors.
Hybrid
Combines independent reference equipment with onboard measurements.
Hybrid
Reference notes
Fixed GNSS and converged INS precede logging. Sensor poses are transformed with extrinsics and B-Spline interpolation; the file tree depicts Aeva, Continental and Navtech references.

Calibration and synchronization

Reported calibration level, reproducibility signals, and supporting notes.

Level
Parameters Only
Processed parameters
Available
Raw calibration data
Not reported
Calibration targets
Not reported

Parameters only

Processed calibration parameters are reported, but raw calibration data is not reported.

Notes

YAML/TXT calibration parameters are supplied. Methods include Fourier-Mellin radar/LiDAR alignment, board-and-reflector joint camera/LiDAR/4D-radar calibration, and target-free LiDAR/IMU initialization.

Known or intentional limitations

Reported constraints and characteristics to check before using the dataset.

Driver-filtered radar object points are sensor-derived products and are not established as manually labeled object annotations.

The paper reports sparse Continental point clouds relative to the Oculii radar used in the transferred SLAM baseline.

Cameras

stereo

Model
FLIR Blackfly S BFS-U3-16S2C-CS USB3
Setup
Stereo
Count
1
Effective cameras
2
Modality
Not Reported
Resolution
1440 x 1080
Rate
15 Hz
Shutter
Not Reported
Lens type
Not Reported
HFOV
60 deg
VFOV
45 deg
Notes
Images are supplied as 8-bit Bayer-pattern PNG files; stereo left/right streams are depicted.

IMUs

Xsens IMU

Model
Xsens MTi-300
Count
1
Accel / gyro
Not reported

GNSS

Hexagon NovAtel SPAN-CPT7

Model or name
Hexagon NovAtel SPAN-CPT7
Count
1
Rate
50 Hz
GNSS type
RTK
Position output
Available
Velocity output
Available
Heading output
Available

LiDAR

Aeva Aeries II

Model or name
Aeva Aeries II
Count
1
Dimensions
3
Rate
10 Hz
Channels
Not reported
Range
Not reported

Radar

Continental ARS548

Count
1
Released data
Point detections / point clouds
Frame rate
20 Hz
Doppler velocity
Available
Elevation angle
Available
Configured range
Not reported
Field of view
Not reported
File format
Binary
Notes
Both radar detections and driver-filtered object point clouds are supplied; raw point cloud does not establish ADC samples or persistent object tracks.

Navtech RAS6

Count
1
Released data
Scanning power images
Frame rate
4 Hz
Doppler velocity
Not reported
Elevation angle
Not reported
Configured range
Not reported
Field of view
Not reported
Notes
Polar radar images with software conversion to Oxford-style and Cartesian images.

Pitot tube

Not reported

Additional sensors

Not reported

Annotations

Reported annotation availability and task support.

Availability
Not reported
Format
Not reported
Class count
Not reported
Semantic segmentation Not reported
Instance segmentation Not reported
Object detection Not reported
Optical flow Not reported
Depth ground truth Not reported

Citation

Citation key and BibTeX kept at the end of the page for reference.

Citation key
Not reported

BibTeX

Not reported

Dataset corrections

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