{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:M3ZDCENZSMDTESESRNHWLVTMLW","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":"c89599742aeccfdad809ec9c2ab7cd269f68d76eb7591b39482b0b2410889ab0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-11-23T17:26:19Z","title_canon_sha256":"31e991e3777b7c5faa588a6e8d297d38169306382b6994832fa643f04a4711cb"},"schema_version":"1.0","source":{"id":"2011.11567","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.11567","created_at":"2026-07-05T02:57:11Z"},{"alias_kind":"arxiv_version","alias_value":"2011.11567v2","created_at":"2026-07-05T02:57:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.11567","created_at":"2026-07-05T02:57:11Z"},{"alias_kind":"pith_short_12","alias_value":"M3ZDCENZSMDT","created_at":"2026-07-05T02:57:11Z"},{"alias_kind":"pith_short_16","alias_value":"M3ZDCENZSMDTESES","created_at":"2026-07-05T02:57:11Z"},{"alias_kind":"pith_short_8","alias_value":"M3ZDCENZ","created_at":"2026-07-05T02:57:11Z"}],"graph_snapshots":[{"event_id":"sha256:23bc810db0e7d041dce761da5c0ac6af12261d0e17495a0aa3fcfc70194bb9f9","target":"graph","created_at":"2026-07-05T02:57:11Z","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/2011.11567/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A recent trend in Non-Rigid Structure-from-Motion (NRSfM) is to express local, differential constraints between pairs of images, from which the surface normal at any point can be obtained by solving a system of polynomial equations. The systems of equations derived in previous work, however, are of high degree, having up to five real solutions, thus requiring a computationally expensive strategy to select a unique solution. Furthermore, they suffer from degeneracies that make the resulting estimates unreliable, without any mechanism to identify this situation.\n  In this paper, we show that, un","authors_text":"Mathieu Salzmann, Pascal Fua, Shaifali Parashar, Yuxuan Long","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-11-23T17:26:19Z","title":"A Closed-Form Solution to Local Non-Rigid Structure-from-Motion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.11567","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":"sha256:77622695899982180bf84a2da2ce49168fa641aa4b57cf0a1848d2b5207a9371","target":"record","created_at":"2026-07-05T02:57:11Z","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":"c89599742aeccfdad809ec9c2ab7cd269f68d76eb7591b39482b0b2410889ab0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-11-23T17:26:19Z","title_canon_sha256":"31e991e3777b7c5faa588a6e8d297d38169306382b6994832fa643f04a4711cb"},"schema_version":"1.0","source":{"id":"2011.11567","kind":"arxiv","version":2}},"canonical_sha256":"66f23111b993073248928b4f65d66c5d8312b44e634f7d5402383e7e97082e0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"66f23111b993073248928b4f65d66c5d8312b44e634f7d5402383e7e97082e0e","first_computed_at":"2026-07-05T02:57:11.615827Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:57:11.615827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7tHp2at4tIYSTH8ACxu6Gv4ZmncU6cXJC02S2m1vyDAJ7BDKNamlfXPlaeW9aNI1LYnXwxw+IPY0z6egdRraDw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:57:11.616390Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.11567","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:77622695899982180bf84a2da2ce49168fa641aa4b57cf0a1848d2b5207a9371","sha256:23bc810db0e7d041dce761da5c0ac6af12261d0e17495a0aa3fcfc70194bb9f9"],"state_sha256":"3362159075f469a24352a10e429f0638dd07d1ff918b0ed5aa12907c4ad95996"}