{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:SF7PTBI4J66GPQHYX72E7OKRRV","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":"ffca333ab90cc1a726e8760d74a3523ba676197252d41b3b0e256072b486ad72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2014-05-09T18:49:49Z","title_canon_sha256":"05814269208d930cbed0f00b2c6c0349bbd10c34f6c6bdefa5a8abf9940c4b14"},"schema_version":"1.0","source":{"id":"1405.2316","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.2316","created_at":"2026-05-17T23:49:18Z"},{"alias_kind":"arxiv_version","alias_value":"1405.2316v1","created_at":"2026-05-17T23:49:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.2316","created_at":"2026-05-17T23:49:18Z"},{"alias_kind":"pith_short_12","alias_value":"SF7PTBI4J66G","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"SF7PTBI4J66GPQHY","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"SF7PTBI4","created_at":"2026-05-18T12:28:49Z"}],"graph_snapshots":[{"event_id":"sha256:1fec7d179193721a0a926cdc7f03cb3e29c7fbd8e053e7ea7665b2136b9d5169","target":"graph","created_at":"2026-05-17T23:49:18Z","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":"Feature tracking in video is a crucial task in computer vision. Usually, the tracking problem is handled one feature at a time, using a single-feature tracker like the Kanade-Lucas-Tomasi algorithm, or one of its derivatives. While this approach works quite well when dealing with high-quality video and \"strong\" features, it often falters when faced with dark and noisy video containing low-quality features. We present a framework for jointly tracking a set of features, which enables sharing information between the different features in the scene. We show that our method can be employed to track","authors_text":"Arthur Szlam, Bryan Poling, Gilad Lerman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2014-05-09T18:49:49Z","title":"Better Feature Tracking Through Subspace Constraints"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.2316","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:d33dab8d408a008dcc74bb7f9212b31a3fa00895fb59185721e540df2be4a359","target":"record","created_at":"2026-05-17T23:49:18Z","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":"ffca333ab90cc1a726e8760d74a3523ba676197252d41b3b0e256072b486ad72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2014-05-09T18:49:49Z","title_canon_sha256":"05814269208d930cbed0f00b2c6c0349bbd10c34f6c6bdefa5a8abf9940c4b14"},"schema_version":"1.0","source":{"id":"1405.2316","kind":"arxiv","version":1}},"canonical_sha256":"917ef9851c4fbc67c0f8bff44fb9518d5ed4e4091daa7c38e862c9ebdfae863a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"917ef9851c4fbc67c0f8bff44fb9518d5ed4e4091daa7c38e862c9ebdfae863a","first_computed_at":"2026-05-17T23:49:18.241119Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:18.241119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LIss9D/Ba0klMJ1ycdeeIw9QxcsVlvhrPsc5gRbt87B4yCRIQT3FVKmOEVtSUK0cQtKdY47zEqc8vOyYyGEVBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:18.241658Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.2316","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d33dab8d408a008dcc74bb7f9212b31a3fa00895fb59185721e540df2be4a359","sha256:1fec7d179193721a0a926cdc7f03cb3e29c7fbd8e053e7ea7665b2136b9d5169"],"state_sha256":"052ac639ab6bd6bb89450e053d6de9c84e6fc231e73592e3d139f8a157ac4ac0"}