{"artifact_id":"L1-004","layer":"L1","title":"Coded Aperture Compressive Temporal Imaging (CACTI)","domain":"Compressive Imaging","sub_domain":"Video snapshot compressive sensing","physics_fingerprint":{"L_DAG":1.4,"title":"Coded Aperture Compressive Temporal Imaging (CACTI)","domain":"Compressive Imaging","carrier":"photon","primitives":["S.temporal.coded","int.temporal"],"sub_domain":"Video snapshot compressive sensing","noise_model":"shot_poisson","forward_model":"y(i,j) = sum_{b=1}^{B} C_b(i,j) * x(i,j,b) + n(i,j)","problem_class":"linear_inverse","solution_space":"3D_temporal","integration_axis":"temporal","sensing_mechanism":"coded_aperture_temporal"},"observable_profile":{"floor":25.0,"metric":"PSNR_dB","regime":"underdetermined B:1 compressive video recovery; binary random temporally-varying masks satisfy RIP-like conditions; sub-pixel mask mismatch is dominant stability risk (10.4x residual ratio observed, EfficientSCI drops 20.58 dB under severe mismatch).","sota_reference":"Coded Aperture Compressive Temporal Imaging (CACTI)"},"size_tiers":{"H_W":[256,512,1024],"N_bands":[8,28,128]},"hardness_fn":{"type":"epsilon_fn","kappa":2500,"metric":"PSNR_dB","baseline":"GAP-TV"},"initiator_dataset":[{"name":"KAIST-30","weight":0.5,"ipfs_cid":null,"license_hash":null},{"name":"CAVE multispectral","weight":0.3,"ipfs_cid":null,"license_hash":null},{"name":"ICVL hyperspectral","weight":0.2,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":5000.0,"chain_hash":"0xa2ae37946ef2822a308a4e60245dd2655070190cf8f3913559ae36286b26a56b","chain_tx_hash":"0xe7c1a57e92d7a901179131ad60b0262564b63ac5aeab565ae481d52a57540ace","chain_block":41421560}