{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VSF44EFTD4OSEIJ6AEXK4RVRVC","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":"93d946fb041ffd522b1fe80a9baf12c3d97e46dc72ed16bb1437532e636e0d09","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2018-11-16T02:36:41Z","title_canon_sha256":"54467a0504b28e54423e0ceab4f000c2ef57aa1fbe79e66891cff5cdf40174a9"},"schema_version":"1.0","source":{"id":"1811.06660","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.06660","created_at":"2026-05-18T00:00:34Z"},{"alias_kind":"arxiv_version","alias_value":"1811.06660v1","created_at":"2026-05-18T00:00:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.06660","created_at":"2026-05-18T00:00:34Z"},{"alias_kind":"pith_short_12","alias_value":"VSF44EFTD4OS","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VSF44EFTD4OSEIJ6","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VSF44EFT","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:98b424a78b35dbc37990a0e3fe92ef52223699f6704c9df046e545616cc78e6a","target":"graph","created_at":"2026-05-18T00:00:34Z","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":"In this research we present a novel algorithm for background subtraction using a moving camera. Our algorithm is based purely on visual information obtained from a camera mounted on an electric bus, operating in downtown Reno which automatically detects moving objects of interest with the view to provide a fully autonomous vehicle. In our approach we exploit the optical flow vectors generated by the motion of the camera while keeping parameter assumptions a minimum. At first, we estimate the Focus of Expansion, which is used to model and simulate 3D points given the intrinsic parameters of the","authors_text":"Kostas Alexis, Sotirios Diamantas","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2018-11-16T02:36:41Z","title":"Optical Flow Based Background Subtraction with a Moving Camera: Application to Autonomous Driving"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.06660","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":"sha256:0fca79d0b98dd2f595b681884ab66b1b2f644a4568db48494761eabcc04f9b0e","target":"record","created_at":"2026-05-18T00:00:34Z","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":"93d946fb041ffd522b1fe80a9baf12c3d97e46dc72ed16bb1437532e636e0d09","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2018-11-16T02:36:41Z","title_canon_sha256":"54467a0504b28e54423e0ceab4f000c2ef57aa1fbe79e66891cff5cdf40174a9"},"schema_version":"1.0","source":{"id":"1811.06660","kind":"arxiv","version":1}},"canonical_sha256":"ac8bce10b31f1d22213e012eae46b1a889d92deeb76471388011615d384d4c13","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ac8bce10b31f1d22213e012eae46b1a889d92deeb76471388011615d384d4c13","first_computed_at":"2026-05-18T00:00:34.222173Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:34.222173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P+Mi2zKqQxObSmFa/JU4BAiaPhNmZ4MUxxRJ7jbKjowVnSLwfPHLxM2NjirJojO3AVU733PQ5zsHVyt1jrb7Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:34.222821Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.06660","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0fca79d0b98dd2f595b681884ab66b1b2f644a4568db48494761eabcc04f9b0e","sha256:98b424a78b35dbc37990a0e3fe92ef52223699f6704c9df046e545616cc78e6a"],"state_sha256":"2ce6785a378f0588e6f0667494d78aef466e6a661b902416188dd3f01be3061f"}