{"artifact_id":"L1-151","layer":"L1","title":"Compressed Ultrafast Photography (CUP) — trillion fps imaging","domain":"Ultrafast Imaging","sub_domain":"Coded-aperture + streak camera 1 Tfps imaging","physics_fingerprint":{"L_DAG":4.5,"title":"Compressed Ultrafast Photography (CUP) — trillion fps imaging","domain":"Ultrafast Imaging","carrier":"photon","primitives":["L.diag.binary","S.temporal.coded","L.streak_sweep","L.modulus_squared","int.temporal"],"sub_domain":"Coded-aperture + streak camera 1 Tfps imaging","noise_model":"shot_poisson","problem_class":"linear_inverse","solution_space":"3D_xyt_video","difficulty_delta":10,"integration_axis":"temporal","sensing_mechanism":"compressed_ultrafast"},"observable_profile":{"metric":"PSNR_dB","regime":"Existence of the recovered 3D xyt video 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 ~= 28); dmd_mask_drift dominates the stability cliff; streak_nonlinearity and the remaining mismatch parameters contribute higher-order bias terms. Photon-shot-noise-limited (poisson counting) sets the irreducible data-fidelity floor, while TV / wavelet-sparsity / deep priors stabilise recovery at the ill-conditioned end of Omega.","secondary":"SSIM"},"size_tiers":{"center_spec":{"omega":{"H":128,"W":128,"N_frames":100,"cross_talk":0.0,"photon_count":200,"dmd_mask_drift":0.0,"low_photon_regime":0.0,"streak_nonlinearity":0.0},"input_format":"measurement_only","problem_class":"cup","forward_operator":"cup_forward","epsilon_fn_center":"22.0"},"omega_bounds":{"H":64,"W":64,"N_frames":[20,500],"cross_talk":[0.0,0.3],"photon_count":[10,5000],"dmd_mask_drift":[0.0,0.3],"low_photon_regime":[0.0,1.0],"streak_nonlinearity":[0.0,0.3]},"epsilon_bounds":{"psnr_db":[5.0,40.0]},"allowed_problem_classes":["cup"],"allowed_omega_dimensions":["H","W","N_frames","photon_count","dmd_mask_drift","streak_nonlinearity","cross_talk","low_photon_regime","dmd_mask_drift","streak_nonlinearity","cross_talk","low_photon_regime"],"allowed_forward_operators":["cup_forward"]},"hardness_fn":{"type":"epsilon_fn","delta":10,"kappa":560,"metric":"PSNR_dB"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0xe4a745062413162527d0bf4d3f2652023b62cf6fb94ef132d303fc7767462e9a","chain_tx_hash":"0x1c8081115525d0fec2c04ea5317cc8d3b1bc761180cd3234c0bfb841218f29f5","chain_block":41554229}