Public

X-ray Fluorescence (XRF) Imaging — Public Tier

(3 scenes)

Full-access development tier with all data visible.

What you get

Measurements (y), ideal forward operator (H), spec ranges, ground truth (x_true), and true mismatch spec.

How to use

Load HDF5 → compare reconstruction vs x_true → check consistency → iterate.

What to submit

Reconstructed signals (x_hat) and corrected spec as HDF5.

Parameter Specifications

✓

True spec visible — use these exact values for Scenario III oracle reconstruction.

Parameter Spec Range True Value Unit
excitation_energy_drift -0.01 – 0.02 0.005 keV
detector_resolution 126.0 – 138.0 132.0 eV
matrix_absorption 0.97 – 1.06 1.015 -
beam_spot_size 0.8 – 1.4 1.1 um

InverseNet Baseline Scores

Method: CPU_baseline — Mismatch parameter: nominal

Scenario I (Ideal)

13.44 dB

SSIM 0.6187

Scenario II (Mismatch)

11.17 dB

SSIM 0.1544

Scenario III (Oracle)

18.72 dB

SSIM 0.1396

Per-scene breakdown (4 scenes)
Scene PSNR I SSIM I PSNR II SSIM II PSNR III SSIM III
scene_00 13.33 0.6172 12.65 0.1296 18.68 0.1369
scene_01 13.64 0.6232 9.57 0.1826 18.81 0.1378
scene_02 13.41 0.6172 10.74 0.1609 18.65 0.1450
scene_03 13.36 0.6172 11.71 0.1445 18.74 0.1385

Public Tier Leaderboard

# Method Score PSNR SSIM Consistency Trust Source
1 SpectraFormer + gradient 0.769 31.43 0.936 0.9 ✓ Certified Spectral unmixing transformer, 2024
2 XRF-UNet + gradient 0.733 29.06 0.901 0.91 ✓ Certified Anunziata et al., X-Ray Spectrom. 2022
3 PnP-BM3D + gradient 0.666 25.98 0.831 0.87 ✓ Certified Danielyan et al., 2012
4 FP-Quantify + gradient 0.571 21.82 0.682 0.9 ✓ Certified Sole et al., Spectrochim. Acta B 2007

Visible Data Fields

y H_ideal spec_ranges x_true true_spec

Dataset

Format: HDF5
Scenes: 3

Scoring Formula

0.4 × PSNR_norm + 0.4 × SSIM + 0.2 × (1 − ‖y − Ĥx̂‖/‖y‖)

PSNR: 40% SSIM: 40% Consistency: 20%
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