{"artifact_id":"L1-019","layer":"L1","title":"Darkfield Microscopy (oblique-illumination scattering imaging)","domain":"Microscopy","sub_domain":"Scattering-only contrast via annular condenser","physics_fingerprint":{"L_DAG":2.2,"title":"Darkfield Microscopy (oblique-illumination scattering imaging)","domain":"Microscopy","carrier":"photon","primitives":["L.oblique_illumination","L.scatter","int.temporal"],"sub_domain":"Scattering-only contrast via annular condenser","noise_model":"gaussian","problem_class":"linear_inverse","solution_space":"2D_intensity","difficulty_delta":1,"integration_axis":"temporal","sensing_mechanism":"oblique_scattering"},"observable_profile":{"metric":"PSNR_dB","regime":"Existence of the recovered 2D intensity 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 well-conditioned (kappa_eff ~= 5); condenser_angle_error dominates the stability cliff; stray_light 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":1024,"W":1024,"NA_obj":0.75,"NA_cond":0.95,"pixel_nm":200,"stray_light":0.0,"photon_count":500,"condenser_angle_error":0.0},"input_format":"measurement_only","problem_class":"darkfield","forward_operator":"darkfield_forward","epsilon_fn_center":"26.0"},"omega_bounds":{"H":[256,4096],"W":[256,4096],"NA_obj":[0.3,1.3],"NA_cond":[0.6,1.4],"pixel_nm":[100,500],"stray_light":[0.0,0.2],"photon_count":[50,10000],"specimen_absorption":[0.0,0.5],"condenser_angle_error":[0.0,0.05]},"epsilon_bounds":{"psnr_db":[12.0,42.0]},"allowed_problem_classes":["darkfield"],"allowed_omega_dimensions":["H","W","pixel_nm","NA_cond","NA_obj","photon_count","condenser_angle_error","stray_light","condenser_angle_error","stray_light","specimen_absorption"],"allowed_forward_operators":["darkfield_forward"]},"hardness_fn":{"type":"epsilon_fn","delta":1,"kappa":100,"metric":"PSNR_dB"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0xa2dd03b62319dd7b0500dffd0b70abbf537b73a2a2d2661f264a8deb4fa6ca66","chain_tx_hash":"0x3b87ae09e57e3bf7e3bd2c345c15340c7a432d15fbd78f01495fe8dbb1819b61","chain_block":41554156}