{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:U46XZIME7Q7WSVBP3OYSBM6XHS","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":"ecd4f6d0b059c3ee054a0a2962186dc324727b5a093ef2939b1af0e25fad1f90","cross_cats_sorted":["cs.GR","math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.CO","submitted_at":"2011-11-06T10:56:13Z","title_canon_sha256":"9c1ea88cfb1ec20d8d558e9df2da2152bdf583d4b4f278f0cd74715d35942d77"},"schema_version":"1.0","source":{"id":"1111.1400","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.1400","created_at":"2026-05-18T04:09:26Z"},{"alias_kind":"arxiv_version","alias_value":"1111.1400v1","created_at":"2026-05-18T04:09:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.1400","created_at":"2026-05-18T04:09:26Z"},{"alias_kind":"pith_short_12","alias_value":"U46XZIME7Q7W","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"U46XZIME7Q7WSVBP","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"U46XZIME","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:748516b1beab5f8c00b845d4626e0432b93447b421604387f108c749b0bee939","target":"graph","created_at":"2026-05-18T04:09:26Z","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":"Bundle adjustment (BA) is the problem of refining a visual reconstruction to produce better structure and viewing parameter estimates. This problem is often formulated as a nonlinear least squares problem, where data arises from interest point matching. Mismatched interest points cause serious problems in this approach, as a single mismatch will affect the entire reconstruction. In this paper, we propose a novel robust Student's t BA algorithm (RST-BA). We model reprojection errors using the heavy tailed Student's t-distribution, and use an implicit trust region method to compute the maximum a","authors_text":"Aleksandr Y. Aravkin, Ara Nefian, Michael Broxton, Michael Styer, Zachary Moratto","cross_cats":["cs.GR","math.OC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.CO","submitted_at":"2011-11-06T10:56:13Z","title":"Student's T Robust Bundle Adjustment Algorithm"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.1400","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":"sha256:50ff04e5be7d451e9c81b979af9ff3935eb63d1832d5a8aa70a8f70220ef9300","target":"record","created_at":"2026-05-18T04:09:26Z","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":"ecd4f6d0b059c3ee054a0a2962186dc324727b5a093ef2939b1af0e25fad1f90","cross_cats_sorted":["cs.GR","math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.CO","submitted_at":"2011-11-06T10:56:13Z","title_canon_sha256":"9c1ea88cfb1ec20d8d558e9df2da2152bdf583d4b4f278f0cd74715d35942d77"},"schema_version":"1.0","source":{"id":"1111.1400","kind":"arxiv","version":1}},"canonical_sha256":"a73d7ca184fc3f69542fdbb120b3d73cb1cede662353b9d8b30f27deed26f422","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a73d7ca184fc3f69542fdbb120b3d73cb1cede662353b9d8b30f27deed26f422","first_computed_at":"2026-05-18T04:09:26.269011Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:09:26.269011Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lBo/7XHmnwrLlpOyOAQ+ZEapCTElkBGAcyDTx6HBd1WLs7PbsKYEq6JLaH6bjkUCEWC8bCGgl3CfImqxc5hPDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:09:26.269704Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.1400","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:50ff04e5be7d451e9c81b979af9ff3935eb63d1832d5a8aa70a8f70220ef9300","sha256:748516b1beab5f8c00b845d4626e0432b93447b421604387f108c749b0bee939"],"state_sha256":"27e0227114ca83542f0c7bc8b66834e9f360ac0019a8a951bb7c1ebb73881b5d"}