INSA soil image dataset

Camera description

1 RGB Camera

Images of each mixture are captured at a distance of ∼ 40cm from a Luxonis OAK-D Pro RGB camera under artificial (ambient) lighting. The camera hasthe following specifications:• Resolution: 12MP (4056x3040)• Frame rate: 60 FPS• Lens Size: 1/2.3 inch• 3 color channels Red+Green+Blue (RGB)

2 InfraRed Camera

To generate the image data under artificial (ambiant) lighting, an Aerial Map-ping Camera (MAPIR) is used which is a low-cost, high-resolution Near-InfraRed (NIR) camera capable of capturing multiple non-distorted images. Some specifications of the camera include:• Resolution: 4000x3000, JPG (24bit)• Shutter Speed: automatic• Lens: 19mm 87° HFOV, F2.8 Fixed Aperture (Survey3W)• Color channels NIR+Green+Blue (NGB)Distance of cameras from soil: ∼40cm

Soil description

The dataset contains:• 3 coarse soils: gravel, Hostun sand and Synthetic coarse sand. Different mixtures are realised with gravel/Hostun sand and gravel/Synthetic sand. Images are taken with the RGB camera.• 2 fine soils: Kaolin (white clay) and silt of Dieppe. The soils were mixed with water at different water content values, and images are taken with the RGB and the InfraRed camera.

Acknowledgment

The authors thank the Department of Civil Engineering and Urban Planning of INSA Lyon (GCU INSA Lyon) for the donation and preparation of soils.

This work was supported by ANR within the joint French-German project RE- MATCH ANR-21-FAI2-0009. We would like to express our sincere appreciation to them for their support.