{"artifact_id":"L1-089","layer":"L1","title":"Electron Backscatter Diffraction (EBSD) — crystallographic orientation mapping","domain":"Electron Microscopy","sub_domain":"Kikuchi-pattern crystal orientation","physics_fingerprint":{"L_DAG":4.0,"title":"Electron Backscatter Diffraction (EBSD) — crystallographic orientation mapping","domain":"Electron Microscopy","carrier":"electron","primitives":["L.excitation.electron_beam","L.diffraction_kikuchi","L.pattern_match","int.angular"],"sub_domain":"Kikuchi-pattern crystal orientation","noise_model":"shot_poisson","problem_class":"nonlinear_inverse","solution_space":"euler_angle_field","difficulty_delta":5,"integration_axis":"angular","sensing_mechanism":"kikuchi_diffraction_pattern"},"observable_profile":{"metric":"orientation_MAE_deg","regime":"Existence of the recovered euler angle field is guaranteed within the declared Omega bounds. Uniqueness is local rather than global (non-convex landscape); convergence depends on initialisation and priors. Stability is moderately conditioned (kappa_eff ~= 25); pattern_center_drift dominates the stability cliff; band_contrast_degradation 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":1024,"W":1024,"kV":20,"step_nm":100,"peak_electrons":200,"pattern_center_drift":0.0,"band_contrast_degradation":0.0},"input_format":"measurement_only","problem_class":"ebsd_kikuchi","forward_operator":"ebsd_kikuchi_forward","epsilon_fn_center":"0.5"},"omega_bounds":{"H":[256,4096],"W":[256,4096],"kV":[10,30],"step_nm":[10,1000],"peak_electrons":[20,2000],"pattern_center_drift":[0.0,0.1],"grain_boundary_ambiguity":[0.0,0.3],"band_contrast_degradation":[0.0,0.5]},"epsilon_bounds":{"psnr_db":[10.0,40.0]},"allowed_problem_classes":["ebsd_kikuchi"],"allowed_omega_dimensions":["H","W","kV","step_nm","peak_electrons","pattern_center_drift","band_contrast_degradation","pattern_center_drift","band_contrast_degradation","grain_boundary_ambiguity"],"allowed_forward_operators":["ebsd_kikuchi_forward"]},"hardness_fn":{"type":"epsilon_fn","delta":5,"kappa":500,"metric":"orientation_MAE_deg"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x552dd04e4f1654b0604973f09e411c7cb62855308209272563bafeac057db8f7","chain_tx_hash":"0xf705d315ca1c7fac5e4e647d8af9337dbf77876231e98acf65c0e826e4a5f5da","chain_block":41554184}