{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:B3E2VEPZOQBXU7ZOWCYJJEV4JL","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"d633b239dffed941f4f75149e61e551a8a705a736357d925c82ce0e80b55be73","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-18T17:25:10Z","title_canon_sha256":"c5e5134860034bcef7d7f3f4c514c897be7330ea99047a67abfde0cd701a34c7"},"schema_version":"1.0","source":{"id":"1806.06834","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.06834","created_at":"2026-05-18T00:08:40Z"},{"alias_kind":"arxiv_version","alias_value":"1806.06834v2","created_at":"2026-05-18T00:08:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.06834","created_at":"2026-05-18T00:08:40Z"},{"alias_kind":"pith_short_12","alias_value":"B3E2VEPZOQBX","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"B3E2VEPZOQBXU7ZO","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"B3E2VEPZ","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:5be878c50a149fd75b29332c22389b83d10adbab836fe940e2794c0061885388","target":"graph","created_at":"2026-05-18T00:08:40Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Full characterization of imaging detectors involves subjecting them to spatially and temporally varying illumination patterns over a large dynamic range. Here we present a scene generator that fulfills many of these functions. Based on a modern smartphone, it has a number of good features, including the ability to generate nearly arbitrary optical scenes, high spatial resolution (13 um), high dynamic range (~10^4), near-Poisson limited illumination stability over time periods from 100 ms to many days, and no background noise. The system does not require any moving parts and may be constructed ","authors_text":"Leon K. Harding, Leo S. Neat, Michael Bottom, Patrick Morrissey, Richard T. Demers, Seth R. Meeker","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-18T17:25:10Z","title":"Smartphone scene generator for efficient characterization of visible imaging detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.06834","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:3fa705205c27c421999c264915c7bb86b3f9cf25b8f67193a93d2b67327fb66f","target":"record","created_at":"2026-05-18T00:08:40Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"d633b239dffed941f4f75149e61e551a8a705a736357d925c82ce0e80b55be73","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-18T17:25:10Z","title_canon_sha256":"c5e5134860034bcef7d7f3f4c514c897be7330ea99047a67abfde0cd701a34c7"},"schema_version":"1.0","source":{"id":"1806.06834","kind":"arxiv","version":2}},"canonical_sha256":"0ec9aa91f974037a7f2eb0b09492bc4acc7f227b25e1355e47c7e719c584071b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ec9aa91f974037a7f2eb0b09492bc4acc7f227b25e1355e47c7e719c584071b","first_computed_at":"2026-05-18T00:08:40.884343Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:08:40.884343Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8PYtI3uR0G0TQvYp3iQEBI/4GW/zD63eSlC+zySG4SLFffvin9hWEwSHKBJiUkOm+LtXEk9mFVeOwobvUmTlCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:08:40.884931Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.06834","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3fa705205c27c421999c264915c7bb86b3f9cf25b8f67193a93d2b67327fb66f","sha256:5be878c50a149fd75b29332c22389b83d10adbab836fe940e2794c0061885388"],"state_sha256":"68d00dec7c4885ba02895060112962e9735efb2a0866375d167de78a30d1a279"}