{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ACBPGVOSYMSXL3T7BLMWTFWIEZ","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":"0377c30b7a069fe271c946b15f846295aa6a1682ec4ece4f4140369256fa09c6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-09-02T15:31:48Z","title_canon_sha256":"5969ce5cb8a9e0725f013cbf79ad323c9db6fbd7dca292e83704a5a32ddc49bf"},"schema_version":"1.0","source":{"id":"1909.00767","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.00767","created_at":"2026-07-05T00:38:04Z"},{"alias_kind":"arxiv_version","alias_value":"1909.00767v2","created_at":"2026-07-05T00:38:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.00767","created_at":"2026-07-05T00:38:04Z"},{"alias_kind":"pith_short_12","alias_value":"ACBPGVOSYMSX","created_at":"2026-07-05T00:38:04Z"},{"alias_kind":"pith_short_16","alias_value":"ACBPGVOSYMSXL3T7","created_at":"2026-07-05T00:38:04Z"},{"alias_kind":"pith_short_8","alias_value":"ACBPGVOS","created_at":"2026-07-05T00:38:04Z"}],"graph_snapshots":[{"event_id":"sha256:cc7ed9c97af286b45040dcf8c9b3917801a932d77249cb364065ad26cc5163cf","target":"graph","created_at":"2026-07-05T00:38:04Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1909.00767/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper proposes fast and novel methods to jointly estimate the target's unknown 3D shape and dynamics. Measurements are noisy and sparsely distributed 3D points from a light detection and ranging (LiDAR) sensor. The methods utilize non-uniform rational B-splines (NURBS) surfaces to approximate the target's shape. One method estimates Cartesian scaling parameters of a NURBS surface, whereas the second method estimates the corresponding NURBS weights, too. Major advantages are the capability of estimating a fully 3D shape as well as the fast processing time. Real-world evaluations with a sta","authors_text":"Benjamin Naujoks, Hans-Joachim Wuensche, Patrick Burger","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-09-02T15:31:48Z","title":"Fast 3D Extended Target Tracking using NURBS Surfaces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.00767","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":"sha256:258eeff277375fe288bae4b686c68ae25ba82e2f926726a72e0688c854496b80","target":"record","created_at":"2026-07-05T00:38:04Z","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":"0377c30b7a069fe271c946b15f846295aa6a1682ec4ece4f4140369256fa09c6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-09-02T15:31:48Z","title_canon_sha256":"5969ce5cb8a9e0725f013cbf79ad323c9db6fbd7dca292e83704a5a32ddc49bf"},"schema_version":"1.0","source":{"id":"1909.00767","kind":"arxiv","version":2}},"canonical_sha256":"0082f355d2c32575ee7f0ad96996c8264a63685086af12ebbc678a129ce900a0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0082f355d2c32575ee7f0ad96996c8264a63685086af12ebbc678a129ce900a0","first_computed_at":"2026-07-05T00:38:04.096002Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:38:04.096002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Nb4jCAsvX4N74yyvT0+i5CormnJfaA/YaNZ5GPWmKv0bpJai1RaNxZjq6uVaXDwx9qFXMCw3rDviw8Hp0kPqBw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:38:04.096471Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.00767","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:258eeff277375fe288bae4b686c68ae25ba82e2f926726a72e0688c854496b80","sha256:cc7ed9c97af286b45040dcf8c9b3917801a932d77249cb364065ad26cc5163cf"],"state_sha256":"8e849a26d5e07d7b8e887e86d4a9d593e31782cb4136d04ece868aa6a3664ec2"}