{"artifact_id":"L1-095","layer":"L1","title":"Amplitude-Modulated Continuous-Wave Time-of-Flight (AMCW-ToF) Depth","domain":"Depth Imaging","sub_domain":"Indirect ToF via phase","physics_fingerprint":{"L_DAG":3.2,"title":"Amplitude-Modulated Continuous-Wave Time-of-Flight (AMCW-ToF) Depth","domain":"Depth Imaging","carrier":"photon","primitives":["L.modulate.amcw","L.reflect_scene","L.demodulate","int.temporal"],"sub_domain":"Indirect ToF via phase","noise_model":"shot_poisson","problem_class":"nonlinear_inverse","solution_space":"2D_depth_map","difficulty_delta":3,"integration_axis":"temporal","sensing_mechanism":"amcw_modulated_illumination"},"observable_profile":{"metric":"depth_RMSE_mm","regime":"Well-posed with multi-frequency unwrap (3 f_mod sufficient for Chinese Remainder Theorem unwrap). Precision sigma_d ~ c / (4*pi*f_mod * sqrt(SNR)). Multipath interference (MPI) at concave corners and translucent surfaces biases depth; motion during 4-bucket integration causes phase artifacts.","secondary":"depth_MAE_mm"},"size_tiers":{"center_spec":{"omega":{"H":424,"W":512,"N_freq":3,"T_int_ms":10,"K_buckets":4,"f_mod_MHz":80,"photon_count":500,"ambient_light":0.0,"motion_jitter":0.0,"multipath_interference":0.0},"input_format":"K_bucket_frames_plus_modulation_params","problem_class":"amcw_tof_depth","forward_operator":"four_bucket_tof_forward","epsilon_fn_center":"8.0 mm RMSE"},"omega_bounds":{"H":[240,1080],"W":[320,1920],"N_freq":[1,5],"T_int_ms":[1,100],"K_buckets":[3,9],"f_mod_MHz":[10,200],"photon_count":[20,5000],"ambient_light":[0.0,50000],"motion_jitter":[0.0,0.05],"temperature_drift":[0.0,0.05],"mixed_pixels_at_edges":[0.0,0.1],"multipath_interference":[0.0,0.3]},"epsilon_bounds":{"depth_rmse_mm":[2.0,100.0]},"allowed_problem_classes":["amcw_tof_depth","tof_mpi_correction","motion_compensated_tof"],"allowed_omega_dimensions":["H","W","f_mod_MHz","K_buckets","N_freq","T_int_ms","photon_count","multipath_interference","motion_jitter","ambient_light","mixed_pixels_at_edges","temperature_drift"],"allowed_forward_operators":["four_bucket_tof_forward","multi_freq_tof","dual_freq_tof"]},"hardness_fn":{"type":"epsilon_fn","delta":3,"kappa":700,"metric":"depth_RMSE_mm"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x69287c38a8582f25577dd3476514ee4e1c4751cf7707a96c9107a986c6779138","chain_tx_hash":"0xb790c39792c2ac236327e21a9896c3e70db6c3e5137b11b4861a93756237fd5d","chain_block":41547811}