Public

Event Horizon Telescope (EHT) Imaging — Public Tier

(3 scenes)

Full-access development tier with all data visible.

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

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

Reconstructed signals (x_hat) and corrected spec as HDF5.

✓

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

Parameter	Spec Range	True Value	Unit
atmospheric_opacity_(tau)	0.02 – 0.26	0.14	nepers
station_gain_calibration	-2.0 – 4.0	1.0	-
uv_coverage_sparsity	-0.15 – 0.15	0.0	-
interstellar_scattering	-2.0 – 4.0	1.0	uasbroadening

Method: CPU_baseline — Mismatch parameter: nominal

23.29 dB

SSIM 0.7894

22.17 dB

SSIM 0.7866

25.86 dB

SSIM 0.8905

Per-scene breakdown (4 scenes)

Scene	PSNR I	SSIM I	PSNR II	SSIM II	PSNR III	SSIM III
scene_00	26.75	0.8323	23.23	0.8030	26.49	0.8981
scene_01	20.68	0.7723	21.60	0.7985	25.14	0.8961
scene_02	18.26	0.7189	18.16	0.7292	22.16	0.8608
scene_03	27.45	0.8339	25.68	0.8155	29.64	0.9071

#	Method	Score	PSNR	SSIM	Consistency	Trust	Source
1	DiffVLBI + gradient	0.835	37.16	0.979	0.86	✓ Certified	Gao et al., NeurIPS 2024
2	RadioFormer + gradient	0.822	35.08	0.968	0.92	✓ Certified	Gheller & Vazza, MNRAS 2023
3	PhysVLBI + gradient	0.818	35.74	0.972	0.86	✓ Certified	He et al., ApJ 2024
4	TransVLBI + gradient	0.777	32.43	0.947	0.87	✓ Certified	Feng et al., A&A 2023
5	SMILI + gradient	0.751	29.85	0.915	0.93	✓ Certified	Akiyama et al., ApJ 2017
6	eht-imaging + gradient	0.675	26.29	0.84	0.88	✓ Certified	Chael et al., ApJ 2018
7	RESOLVE + gradient	0.616	23.68	0.757	0.88	✓ Certified	Junklewitz et al., A&A 2016
8	MEM-VLBI + gradient	0.529	20.34	0.615	0.9	✓ Certified	Narayan & Nityananda, ARA&A 1986
9	CLEAN-VLBI + gradient	0.449	17.56	0.478	0.91	✓ Certified	Hogbom, A&AS 1974

y H_ideal spec_ranges x_true true_spec

Format: HDF5

Scenes: 3

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

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