{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ERUX3EVTT24BKF6N45MBGYONQF","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":"11fe251749e705df5f4bb26bf97a9c65b538dfd0b70f590e699239a7cd0400b1","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2018-06-08T03:21:13Z","title_canon_sha256":"49c11756bdad4b98d744a173d00db8d307ae7c7c76cc227fbcbee03307d43067"},"schema_version":"1.0","source":{"id":"1806.03997","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.03997","created_at":"2026-05-17T23:49:45Z"},{"alias_kind":"arxiv_version","alias_value":"1806.03997v1","created_at":"2026-05-17T23:49:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.03997","created_at":"2026-05-17T23:49:45Z"},{"alias_kind":"pith_short_12","alias_value":"ERUX3EVTT24B","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"ERUX3EVTT24BKF6N","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"ERUX3EVT","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:4f941a2d41a4531d91f3e3bdad286a909a6c8389da6153f2a783832b18d11953","target":"graph","created_at":"2026-05-17T23:49:45Z","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":"Clinical examinations that involve endoscopic exploration of the nasal cavity and sinuses often do not have a reference image to provide structural context to the clinician. In this paper, we present a system for navigation during clinical endoscopic exploration in the absence of computed tomography (CT) scans by making use of shape statistics from past CT scans. Using a deformable registration algorithm along with dense reconstructions from video, we show that we are able to achieve submillimeter registrations in in-vivo clinical data and are able to assign confidence to these registrations u","authors_text":"Austin Reiter, Ayushi Sinha, Gregory D. Hager, Masaru Ishii, Russell H. Taylor, Xingtong Liu","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2018-06-08T03:21:13Z","title":"Endoscopic navigation in the absence of CT imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.03997","kind":"arxiv","version":1},"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":"sha256:57f61e66f96d1faf4131e752f310084ba9ad03bcb5dbdd425d955278580ded06","target":"record","created_at":"2026-05-17T23:49:45Z","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":"11fe251749e705df5f4bb26bf97a9c65b538dfd0b70f590e699239a7cd0400b1","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2018-06-08T03:21:13Z","title_canon_sha256":"49c11756bdad4b98d744a173d00db8d307ae7c7c76cc227fbcbee03307d43067"},"schema_version":"1.0","source":{"id":"1806.03997","kind":"arxiv","version":1}},"canonical_sha256":"24697d92b39eb81517cde7581361cd81716d471b0f58c982998fb98e051f3db3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"24697d92b39eb81517cde7581361cd81716d471b0f58c982998fb98e051f3db3","first_computed_at":"2026-05-17T23:49:45.108129Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:45.108129Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ypiu7wDC5P8zdiSmUSngkCIYTeEDaqpf2FNQP3QYpboi0qNFSFj0xXJYHXGO7J+mimWPNdEZfH8GNCrCxsCCCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:45.108701Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.03997","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:57f61e66f96d1faf4131e752f310084ba9ad03bcb5dbdd425d955278580ded06","sha256:4f941a2d41a4531d91f3e3bdad286a909a6c8389da6153f2a783832b18d11953"],"state_sha256":"b73be7f682c399110964d7b2285d544009037b23bfc8af3cb79333292e2dc19d"}