{"closest_prior_art":[{"name":"Spectral imaging of Alfred Tennyson manuscripts","overlap":"Applies multispectral imaging, pixel-level spectral processing, fibre-optic reflectance spectroscopy, and XRF directly to literary manuscripts and genetic-critical questions about revision stages; it also notes that ink dilution, pigment-to-binder ratio, and paper absorption affect appearance.","remaining_difference":"It does not report the proposal's explicit continuous-by-default field model, replicated transect boundary rule, background-corrected change-width criterion, or controlled comparison against discrete-only and smooth-only accounts.","source_ids":["SRC1"]},{"name":"Scanning micro-XRF heat maps for visually identical manuscript inks","overlap":"Maps elemental-signal intensity spatially, compares inked and uninscribed support regions, and distinguishes original writing, corrections, reinking, and later additions that look identical.","remaining_difference":"It identifies writing-stage differences through elemental maps but does not combine a continuous calibrated reflectance field with repeat-variance thresholds, adjacent-transect recurrence, resolution auditing, and an unresolved classification for failed boundaries.","source_ids":["SRC3"]},{"name":"Hyperspectral and chemometric differentiation of black inks","overlap":"Uses non-invasive reflectance imaging, spatial regions, PCA, clustering, and spectral-angle analysis while documenting false material distinctions caused by deposit thickness, illumination, paper fibres, and mixed ink-paper pixels.","remaining_difference":"It studies modern pen samples and ink classification rather than literary revision strata, and it does not test a hybrid continuous/discrete boundary model or consequences for predeclared compositional interpretations.","source_ids":["SRC2"]}],"contrastive_claim_falsifier":"The remaining claim is falsified for the pilot if blinded repeated measurements on the calibration target and six manuscript regions show that the hybrid rule misses or invents boundaries at least as often as the discrete and continuous baselines, produces boundaries no more repeatable than visual judgments, or eliminates no predeclared revision-stratum account.","contrastive_claim_remaining":"For selected literary-manuscript revisions, treating calibrated reflectance as continuous by default and declaring a material boundary only after a localized, replicated, background-corrected discontinuity—optionally corroborated by approved micro-XRF—will constrain at least one predeclared revision-stratum account that both ordinary visual segmentation and a globally smooth model leave unresolved. The claim excludes authorship, chronology, intention, and literary significance.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","gates":{"adequate_source_search":{"rationale":"The bounded search covered the proposal directly, genetic-criticism and forensic synonyms, established hyperspectral/XRF practices, conservation guidance, and combinations involving thickness, substrate, registration, spatial resolution, crossings, and elemental maps. Four opened sources from four publishers were retained.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"bounded_next_test":{"rationale":"The proposed calibration target, six regions, three registered transects per region, blinded repeats, explicit comparison metrics, and fixed stopping point form a bounded test. Prior work shows that reflectance and micro-XRF supply measurable spatial signals while also identifying thickness, support, and resolution-related failure modes.","source_ids":["SRC2","SRC3","SRC4"],"status":"PASS"},"distinct_testable_claim":{"rationale":"The retained art establishes spectral revision analysis, continuous spatial signal maps, ink classification, and substrate controls, but does not disclose the complete continuous-by-default boundary rule with replicated localized discontinuities and a three-model interpretive comparison. That remaining difference has observable success and failure criteria.","source_ids":["SRC1","SRC2","SRC3"],"status":"PASS"},"no_obvious_safety_or_authority_stop":{"rationale":"No categorical stop is visible for the authorized first step of expendable-target calibration and non-contact optical measurement. Official Library of Congress practice uses integrated LED illumination to minimize object exposure, while the research literature warns that infrared heating can endanger fragile material. The proposal addresses this through conservator veto, custodian authorization, exposure limits, separate XRF approval, and immediate halt conditions.","source_ids":["SRC2","SRC4"],"status":"PASS"},"supported_problem":{"rationale":"The sources jointly show that unaided appearance can miss distinct inks or hidden revisions, that the same ink can change reflectance with layer thickness, illumination, paper fibres, and mixed pixels, and that visually identical manuscript inks can belong to different writing or correction stages. The granularity problem is therefore visible and materially consequential.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"}},"prior_art_disposition":"ADJACENT_PRIOR_ART","problem_evidence":{"finding":"Public evidence supports both directions of error: materially different inscriptions may look alike, while reflectance differences can arise from deposit thickness, illumination, substrate heterogeneity, or ink-paper mixing rather than different ink composition. Literary-manuscript and medieval-scroll studies also show that resolving these differences can change accounts of revision or later intervention.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"SUPPORTED"},"research_id":"eoa_inverse_innovation_exp13_light_screen_20260806","schema_version":1,"screen_id":"E13P131","screen_survival":true,"search_lanes":{"component_combination":{"no_result_note":null,"queries":["hyperspectral imaging manuscript inks PCA classification thickness aging paper variation","scanning micro-XRF heat maps identical inks manuscript modifications","manuscript reflectance transect ink boundary XRF repeated measurements","ink discrimination background correction registration spatial resolution hyperspectral manuscript"],"source_ids":["SRC2","SRC3"]},"direct_problem_and_intervention":{"no_result_note":null,"queries":["manuscript ink discrimination reflectance spectroscopy micro-XRF revision layers continuous variation","literary manuscript revision strata ink multispectral imaging XRF genetic criticism"],"source_ids":["SRC1","SRC3"]},"products_practices_and_standards":{"no_result_note":null,"queries":["Library of Congress hyperspectral imaging manuscripts safe conservation lighting","cultural heritage manuscripts XRF non destructive safety exposure standards paper"],"source_ids":["SRC4"]},"synonyms_and_historical_terms":{"no_result_note":null,"queries":["historic manuscript ink discrimination XRF reflectance spectroscopy different writing phases","spectral imaging ink crossings stroke intersections sequence manuscript reflectance XRF","historical document ink continuous gradient discrete boundary spectral map"],"source_ids":["SRC1","SRC2","SRC3"]}},"sources":[{"claims_supported":["Multispectral imaging reveals manuscript information outside ordinary vision and supports pixel-level spectral separation.","FORS and XRF were combined in a literary-manuscript study to characterize inks and investigate revision stages.","Ink dilution, pigment-to-binder ratio, and paper absorption can change the appearance of manuscript revisions, making material interpretation nontrivial."],"publisher":"Oxford University Press","source_id":"SRC1","source_type":"PRIMARY_RESEARCH","title":"Reading Behind the Lines: Ghost Texts and Spectral Imaging in the Manuscripts of Alfred Tennyson","url":"https://academic.oup.com/res/article/76/324/196/8068833"},{"claims_supported":["Hyperspectral reflectance and chemometric methods can non-invasively differentiate some visually similar inks.","The same ink produces different reflectance when deposited at different thicknesses; illumination, paper fibres, and mixed ink-paper pixels also affect results.","Not all inks are separable in the measured range, spatial-region selection matters, and infrared heating can endanger fragile documents."],"publisher":"Springer Nature","source_id":"SRC2","source_type":"PRIMARY_RESEARCH","title":"Hyperspectral imaging coupled with chemometric analysis for non-invasive differentiation of black pens","url":"https://link.springer.com/article/10.1007/s00339-016-0494-9"},{"claims_supported":["Scanning micro-XRF heat maps distinguished visually identical inks used for original text, corrections, reinking, and later additions.","The study compared inked regions with uninscribed support and used spatial elemental intensities to expose heterogeneous composition.","The method can reveal successive manuscript-production and modification stages, but elemental abundance also varies within applied ink."],"publisher":"Elsevier Masson SAS","source_id":"SRC3","source_type":"PRIMARY_RESEARCH","title":"Distinguishing between seemingly identical inks using scanning µXRF and heat maps","url":"https://www.sciencedirect.com/science/article/pii/S1296207422001133"},{"claims_supported":["Unaided viewing can miss erased, overwritten, hidden, or environmentally faded manuscript inks.","The Library of Congress uses non-invasive hyperspectral imaging with integrated LED lighting intended to minimize light exposure.","Its practice combines spectral baselines, substrate and environmental assessment, spatial mapping, PCA or multivariate processing, metadata, and data-validation protocols."],"publisher":"Library of Congress","source_id":"SRC4","source_type":"OFFICIAL_GUIDANCE","title":"Integrated Digital Imaging Systems: Hyperspectral Imaging","url":"https://www.loc.gov/preservation/scientists/projects/hyperspec_imaging.html"}],"world_novelty_boundary":"This bounded public-web screen found close implementations of every major measurement family and direct applications to manuscript revision, but no retained source disclosed the proposal's complete hybrid boundary rule and bounded three-model test. That absence supports only an adjacent-prior-art disposition; it does not establish world novelty, patentability, market size, expert acceptance, or realized value."}