{"artifact_id":"L1-042","layer":"L1","title":"Optical Coherence Tomography (OCT)","domain":"Medical Imaging","sub_domain":"Coherence-gated depth-resolved imaging","physics_fingerprint":{"L_DAG":3.5,"title":"Optical Coherence Tomography (OCT)","domain":"Medical Imaging","carrier":"photon","primitives":["L.sd_oct_spectral","L.fourier_transform","S.scan.raster","int.spectral"],"sub_domain":"Coherence-gated depth-resolved imaging","noise_model":"gaussian","problem_class":"linear_inverse","solution_space":"3D_tissue_reflectivity","difficulty_delta":3,"integration_axis":"spectral","sensing_mechanism":"oct_spectral_domain"},"observable_profile":{"metric":"PSNR_dB","regime":"Existence of the recovered 3D tissue reflectivity is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by the declared priors. Stability is moderately conditioned (kappa_eff ~= 12); dispersion_mismatch dominates the stability cliff; motion_artifacts and the remaining mismatch parameters contribute higher-order bias terms. Additive gaussian thermal/electronic noise sets the irreducible data-fidelity floor, while mild Tikhonov or analytic inversion is sufficient at the nominal Omega point.","secondary":"SSIM"},"size_tiers":{"center_spec":{"omega":{"H":512,"W":512,"Z":1024,"SNR_dB":30,"pixel_um":5,"lambda_bw_nm":50,"speckle_noise":0.0,"lambda_center_nm":840,"motion_artifacts":0.0,"dispersion_mismatch":0.0},"input_format":"measurement_only","problem_class":"oct","forward_operator":"oct_forward","epsilon_fn_center":"28.0"},"omega_bounds":{"H":128,"W":128,"Z":[256,4096],"SNR_dB":[10.0,45.0],"pixel_um":[1,20],"lambda_bw_nm":[20,200],"speckle_noise":[0.0,0.3],"signal_roll_off":[0.0,0.3],"lambda_center_nm":[830,1310],"motion_artifacts":[0.0,0.3],"dispersion_mismatch":[0.0,0.3]},"epsilon_bounds":{"psnr_db":[5.0,45.0]},"allowed_problem_classes":["oct"],"allowed_omega_dimensions":["H","W","Z","lambda_center_nm","lambda_bw_nm","pixel_um","SNR_dB","dispersion_mismatch","motion_artifacts","speckle_noise","dispersion_mismatch","motion_artifacts","speckle_noise","signal_roll_off"],"allowed_forward_operators":["oct_forward"]},"hardness_fn":{"type":"epsilon_fn","delta":3,"kappa":240,"metric":"PSNR_dB"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x0fceaa62df330335afa1042cca0507d44e53b368763761fe9617f6258e421264","chain_tx_hash":"0xff46ebfed82ede08ddedb1909b8786ac17f01b990a912684a292d6dd7f987c28","chain_block":41553358}