Public

Ultrasonic Phased Array (TFM/FMC) — 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
element_pitch_error -0.002 – 0.004 0.001 mm
sound_velocity 5860.0 – 5980.0 5920.0 m/s
wedge_angle_error -0.2 – 0.4 0.1 deg
dead_element_fraction -0.01 – 0.02 0.005 -

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 FMC-Former + gradient 0.777 32.43 0.947 0.87 ✓ Certified Full matrix capture transformer, 2024
2 UTPA-Net + gradient 0.771 31.14 0.933 0.93 ✓ Certified Phased array DL reconstruction, 2022
3 SAFT + gradient 0.692 26.54 0.847 0.94 ✓ Certified Doctor et al., NDT Int. 1986
4 TFM + gradient 0.628 23.79 0.761 0.93 ✓ Certified Holmes et al., NDT&E Int. 2005

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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