{"artifact_id":"L1-071","layer":"L1","title":"Digital Holography (off-axis and in-line intensity holograms)","domain":"Coherent Imaging","sub_domain":"Interferometric complex-field recovery","physics_fingerprint":{"L_DAG":3.3,"title":"Digital Holography (off-axis and in-line intensity holograms)","domain":"Coherent Imaging","carrier":"photon","primitives":["L.modulation.reference","L.add_coherent","L.modulus_squared","int.spatial"],"sub_domain":"Interferometric complex-field recovery","noise_model":"shot_poisson","problem_class":"linear_inverse","solution_space":"complex_2D","difficulty_delta":3,"integration_axis":"spatial","sensing_mechanism":"interferometric"},"observable_profile":{"metric":"PSNR_dB","regime":"Off-axis single-shot: ill-posed without spatial bandwidth separation (tilt must exceed twice max object spatial frequency). In-line phase-shifting: well-posed with N >= 3 phase steps; stability dominated by reference-phase calibration error and wavelength drift.","secondary":"phase_L2_error"},"size_tiers":{"center_spec":{"omega":{"H":1024,"W":1024,"z_mm":100.0,"photon_count":1000,"wavelength_nm":632.8,"tilt_angle_mrad":10.0,"wavelength_drift":0.0,"reference_tilt_error":0.0,"propagation_distance_error":0.0},"input_format":"single_intensity_hologram_plus_reference_params","problem_class":"complex_field_recovery","forward_operator":"off_axis_digital_hologram","epsilon_fn_center":"32.0 dB PSNR"},"omega_bounds":{"H":[256,4096],"W":[256,4096],"z_mm":[1.0,500.0],"photon_count":[10,50000],"wavelength_nm":[400,1550],"N_phase_shifts":[3,8],"tilt_angle_mrad":[1.0,50.0],"wavelength_drift":[0.0,0.002],"phase_shift_error":[0.0,0.1],"reference_tilt_error":[0.0,2.0],"propagation_distance_error":[0.0,5.0]},"epsilon_bounds":{"psnr_db":[18.0,42.0]},"allowed_problem_classes":["complex_field_recovery","phase_imaging"],"allowed_omega_dimensions":["H","W","tilt_angle_mrad","wavelength_nm","z_mm","photon_count","N_phase_shifts","reference_tilt_error","wavelength_drift","propagation_distance_error","phase_shift_error"],"allowed_forward_operators":["off_axis_digital_hologram","in_line_phase_shifting","gabor_inline"]},"hardness_fn":{"type":"epsilon_fn","delta":3,"kappa":1200,"metric":"PSNR_dB"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0xd93b970467e3ac7a98b365b06ed1fe861772605ba4604d3789d07ce52bdcc821","chain_tx_hash":"0xa034295c686077a8ba8f7cf6230b4614efbf784b9d7edad609f8501e5a632d68","chain_block":41554169}