Dev
Talbot-Lau X-ray Grating Interferometry — Dev Tier
(5 scenes)Blind evaluation tier — no ground truth available.
What you get
Measurements (y), ideal forward operator (H), and spec ranges only.
How to use
Apply your pipeline from the Public tier. Use consistency as self-check.
What to submit
Reconstructed signals and corrected spec. Scored server-side.
Parameter Specifications
🔒
True spec hidden — estimate parameters from spec ranges below.
| Parameter | Spec Range | Unit |
|---|---|---|
| grating_alignment_(rotation) | -0.12 – 0.18 | deg |
| inter_grating_distance_error | -0.24 – 0.36 | - |
| phase_stepping_error | -1.2 – 1.8 | perstep |
| grating_defect_fraction | -0.72 – 1.08 | - |
Dev Tier Leaderboard
| # | Method | Score | PSNR | SSIM | Consistency | Trust | Source |
|---|---|---|---|---|---|---|---|
| 1 | GratingFormer + gradient | 0.706 | 28.63 | 0.893 | 0.81 | ✓ Certified | Grating interferometry transformer, 2024 |
| 2 | PCA Retrieval + gradient | 0.544 | 20.98 | 0.645 | 0.88 | ✓ Certified | Zanette et al., PMB 2012 |
| 3 | Phase Stepping + gradient | 0.513 | 19.98 | 0.598 | 0.87 | ✓ Certified | Weitkamp et al., Opt. Express 2005 |
| 4 | DPC-Net + gradient | 0.508 | 19.6 | 0.579 | 0.9 | ✓ Certified | Differential phase contrast CNN, 2021 |
Visible Data Fields
y
H_ideal
spec_ranges
Dataset
Format: HDF5
Scenes: 5
Scoring Formula
0.4 × PSNR_norm + 0.4 × SSIM + 0.2 × (1 − ‖y − Ĥx̂‖/‖y‖)
PSNR: 40%
SSIM: 40%
Consistency: 20%