{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:FT32JGQNQRXLPNJGUVP65MPFVS","short_pith_number":"pith:FT32JGQN","canonical_record":{"source":{"id":"2309.08878","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2023-09-16T05:00:46Z","cross_cats_sorted":[],"title_canon_sha256":"ca1c6c09a0809da029f0f3122b6ee5eb188e641240d890c2144008b47d116131","abstract_canon_sha256":"29a27c947d3846dfe6b982fc32c02c29f0b02939f7df0a53c1a453671f30f79a"},"schema_version":"1.0"},"canonical_sha256":"2cf7a49a0d846eb7b526a55feeb1e5acabe8144ead9843cbf07c185f1fb52379","source":{"kind":"arxiv","id":"2309.08878","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.08878","created_at":"2026-07-05T06:51:30Z"},{"alias_kind":"arxiv_version","alias_value":"2309.08878v1","created_at":"2026-07-05T06:51:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.08878","created_at":"2026-07-05T06:51:30Z"},{"alias_kind":"pith_short_12","alias_value":"FT32JGQNQRXL","created_at":"2026-07-05T06:51:30Z"},{"alias_kind":"pith_short_16","alias_value":"FT32JGQNQRXLPNJG","created_at":"2026-07-05T06:51:30Z"},{"alias_kind":"pith_short_8","alias_value":"FT32JGQN","created_at":"2026-07-05T06:51:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:FT32JGQNQRXLPNJGUVP65MPFVS","target":"record","payload":{"canonical_record":{"source":{"id":"2309.08878","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2023-09-16T05:00:46Z","cross_cats_sorted":[],"title_canon_sha256":"ca1c6c09a0809da029f0f3122b6ee5eb188e641240d890c2144008b47d116131","abstract_canon_sha256":"29a27c947d3846dfe6b982fc32c02c29f0b02939f7df0a53c1a453671f30f79a"},"schema_version":"1.0"},"canonical_sha256":"2cf7a49a0d846eb7b526a55feeb1e5acabe8144ead9843cbf07c185f1fb52379","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:51:30.907185Z","signature_b64":"Lx0jmTX0J1M/r50sstKfGkvmAUKlQav1CSJmke0i2bxp8JdPqQyUMJuTNsRxpA3rxfAkJJyjm83GBhBjdOvkDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2cf7a49a0d846eb7b526a55feeb1e5acabe8144ead9843cbf07c185f1fb52379","last_reissued_at":"2026-07-05T06:51:30.906683Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:51:30.906683Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.08878","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:51:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QKJaSxqu6ZXtUS+uhzfQkcxUFlzF2oIXNrcUtevBc0cNFBkT1kiwC/x01ol73YwBSFCtjKNvTaWL7fjTSVYRAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T05:32:15.760015Z"},"content_sha256":"5e2cd1ade1068283eed5b015759f8bf3cfb85884bd11b319f03b344ded418c50","schema_version":"1.0","event_id":"sha256:5e2cd1ade1068283eed5b015759f8bf3cfb85884bd11b319f03b344ded418c50"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:FT32JGQNQRXLPNJGUVP65MPFVS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Surface Extraction from Neural Unsigned Distance Fields","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.GR","authors_text":"Congyi Zhang, Guying Lin, John Keyser, Lei Yang, Scott Schaefer, Taku Komura, Wenping Wang, Xin Li","submitted_at":"2023-09-16T05:00:46Z","abstract_excerpt":"We propose a method, named DualMesh-UDF, to extract a surface from unsigned distance functions (UDFs), encoded by neural networks, or neural UDFs. Neural UDFs are becoming increasingly popular for surface representation because of their versatility in presenting surfaces with arbitrary topologies, as opposed to the signed distance function that is limited to representing a closed surface. However, the applications of neural UDFs are hindered by the notorious difficulty in extracting the target surfaces they represent. Recent methods for surface extraction from a neural UDF suffer from signific"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.08878","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2309.08878/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:51:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mFY5Aw60YGLl+oVnhxp/zmHRzifW5rC8QpLz89Oxp9kBuZWrH3AUONA/JGuwhqA0vKoGFKcF66NKB7f+Jr1LDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T05:32:15.760668Z"},"content_sha256":"05fd6bb3751484ce47c3a3d0579a5f31e5b63adbe9e65dd80fd1997159c35f70","schema_version":"1.0","event_id":"sha256:05fd6bb3751484ce47c3a3d0579a5f31e5b63adbe9e65dd80fd1997159c35f70"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FT32JGQNQRXLPNJGUVP65MPFVS/bundle.json","state_url":"https://pith.science/pith/FT32JGQNQRXLPNJGUVP65MPFVS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FT32JGQNQRXLPNJGUVP65MPFVS/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-09T05:32:15Z","links":{"resolver":"https://pith.science/pith/FT32JGQNQRXLPNJGUVP65MPFVS","bundle":"https://pith.science/pith/FT32JGQNQRXLPNJGUVP65MPFVS/bundle.json","state":"https://pith.science/pith/FT32JGQNQRXLPNJGUVP65MPFVS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FT32JGQNQRXLPNJGUVP65MPFVS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:FT32JGQNQRXLPNJGUVP65MPFVS","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":"29a27c947d3846dfe6b982fc32c02c29f0b02939f7df0a53c1a453671f30f79a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2023-09-16T05:00:46Z","title_canon_sha256":"ca1c6c09a0809da029f0f3122b6ee5eb188e641240d890c2144008b47d116131"},"schema_version":"1.0","source":{"id":"2309.08878","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.08878","created_at":"2026-07-05T06:51:30Z"},{"alias_kind":"arxiv_version","alias_value":"2309.08878v1","created_at":"2026-07-05T06:51:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.08878","created_at":"2026-07-05T06:51:30Z"},{"alias_kind":"pith_short_12","alias_value":"FT32JGQNQRXL","created_at":"2026-07-05T06:51:30Z"},{"alias_kind":"pith_short_16","alias_value":"FT32JGQNQRXLPNJG","created_at":"2026-07-05T06:51:30Z"},{"alias_kind":"pith_short_8","alias_value":"FT32JGQN","created_at":"2026-07-05T06:51:30Z"}],"graph_snapshots":[{"event_id":"sha256:05fd6bb3751484ce47c3a3d0579a5f31e5b63adbe9e65dd80fd1997159c35f70","target":"graph","created_at":"2026-07-05T06:51:30Z","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/2309.08878/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose a method, named DualMesh-UDF, to extract a surface from unsigned distance functions (UDFs), encoded by neural networks, or neural UDFs. Neural UDFs are becoming increasingly popular for surface representation because of their versatility in presenting surfaces with arbitrary topologies, as opposed to the signed distance function that is limited to representing a closed surface. However, the applications of neural UDFs are hindered by the notorious difficulty in extracting the target surfaces they represent. Recent methods for surface extraction from a neural UDF suffer from signific","authors_text":"Congyi Zhang, Guying Lin, John Keyser, Lei Yang, Scott Schaefer, Taku Komura, Wenping Wang, Xin Li","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2023-09-16T05:00:46Z","title":"Surface Extraction from Neural Unsigned Distance Fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.08878","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":"sha256:5e2cd1ade1068283eed5b015759f8bf3cfb85884bd11b319f03b344ded418c50","target":"record","created_at":"2026-07-05T06:51:30Z","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":"29a27c947d3846dfe6b982fc32c02c29f0b02939f7df0a53c1a453671f30f79a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2023-09-16T05:00:46Z","title_canon_sha256":"ca1c6c09a0809da029f0f3122b6ee5eb188e641240d890c2144008b47d116131"},"schema_version":"1.0","source":{"id":"2309.08878","kind":"arxiv","version":1}},"canonical_sha256":"2cf7a49a0d846eb7b526a55feeb1e5acabe8144ead9843cbf07c185f1fb52379","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2cf7a49a0d846eb7b526a55feeb1e5acabe8144ead9843cbf07c185f1fb52379","first_computed_at":"2026-07-05T06:51:30.906683Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:51:30.906683Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Lx0jmTX0J1M/r50sstKfGkvmAUKlQav1CSJmke0i2bxp8JdPqQyUMJuTNsRxpA3rxfAkJJyjm83GBhBjdOvkDg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:51:30.907185Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.08878","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5e2cd1ade1068283eed5b015759f8bf3cfb85884bd11b319f03b344ded418c50","sha256:05fd6bb3751484ce47c3a3d0579a5f31e5b63adbe9e65dd80fd1997159c35f70"],"state_sha256":"61bc936865aef56f5779851a99be546f9cc4db9da7490982a443ba536cfc4845"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vH+C5wyN7MYCzjwciOIXIVLcdIt0tpQ+Y5h0TpCohTXK0eJJrJM92GVgQQI5jf0plkMWwjCh6F3gBcmDWti/BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T05:32:15.766905Z","bundle_sha256":"e0840b5cbe676c05778db1bd40b3a6316d5a2caa976313c7b2a5171ec7e22618"}}