Published May 26, 2025
| Version v1
Dataset
Open
Synthetic Overlapping Slender Bodies (SOSB) Dataset
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1.
University of Copenhagen
Description
Overview
The dataset is stored in `overlapping_slender.hdf5` and contains five groups, corresponding to the number of overlapping slender bodies:
- Groups: 1, 2, 3, 4 and 5
- Images per group: 256
- Image size: 128 × 128 pixels
Each group contains:
| Field | Description | Shape |
| input | Grayscale images | (256, 128, 128) |
| labels | Ground-truth splines (M×P×2 format) | (256, M, P, 2) |
Where:
- M: number of slender bodies in each image (equal to the group number)
- P : number of control points per spline
- 2 : x and y coordinates
Note: Only groups 1 through 3 were used in the experiments presented in the paper: Spline refinement with differentiable rendering.
Groups 4 and 5 are included for possible future use or extended evaluation under more complex overlap scenarios.
To open and visualize the dataset we provide a short script: python show_samples.py as well as two images (with and without labels) for quick inspection.
