{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:32APNIJWCTN7FSUQDUARFQNE5A","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":"a5cd3eca3a592c6ed4bb9bc24fd55e1b4a7ab76cd63f68613575ecf0712269b8","cross_cats_sorted":["cs.RO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-08-02T05:20:21Z","title_canon_sha256":"a0dc89a6010ef05145ad32e4f400be0ef1952b0401774dd7676890283937547e"},"schema_version":"1.0","source":{"id":"1808.00671","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.00671","created_at":"2026-07-05T00:07:34Z"},{"alias_kind":"arxiv_version","alias_value":"1808.00671v3","created_at":"2026-07-05T00:07:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.00671","created_at":"2026-07-05T00:07:34Z"},{"alias_kind":"pith_short_12","alias_value":"32APNIJWCTN7","created_at":"2026-07-05T00:07:34Z"},{"alias_kind":"pith_short_16","alias_value":"32APNIJWCTN7FSUQ","created_at":"2026-07-05T00:07:34Z"},{"alias_kind":"pith_short_8","alias_value":"32APNIJW","created_at":"2026-07-05T00:07:34Z"}],"graph_snapshots":[{"event_id":"sha256:e8926ee5f8648ddf3bd34fc78146c3a96adc8dfb50799eb3495e0605e4c79d60","target":"graph","created_at":"2026-07-05T00:07:34Z","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/1808.00671/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Shape completion, the problem of estimating the complete geometry of objects from partial observations, lies at the core of many vision and robotics applications. In this work, we propose Point Completion Network (PCN), a novel learning-based approach for shape completion. Unlike existing shape completion methods, PCN directly operates on raw point clouds without any structural assumption (e.g. symmetry) or annotation (e.g. semantic class) about the underlying shape. It features a decoder design that enables the generation of fine-grained completions while maintaining a small number of paramet","authors_text":"Christoph Mertz, David Held, Martial Hebert, Tejas Khot, Wentao Yuan","cross_cats":["cs.RO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-08-02T05:20:21Z","title":"PCN: Point Completion Network"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.00671","kind":"arxiv","version":3},"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":"sha256:8148eaab06b73477946dc87c3ac23763d122b0a84f7767e39ce0b2e430aa423f","target":"record","created_at":"2026-07-05T00:07:34Z","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":"a5cd3eca3a592c6ed4bb9bc24fd55e1b4a7ab76cd63f68613575ecf0712269b8","cross_cats_sorted":["cs.RO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-08-02T05:20:21Z","title_canon_sha256":"a0dc89a6010ef05145ad32e4f400be0ef1952b0401774dd7676890283937547e"},"schema_version":"1.0","source":{"id":"1808.00671","kind":"arxiv","version":3}},"canonical_sha256":"de80f6a13614dbf2ca901d0112c1a4e82ac3f1108a7c02782225b6bf9ec25e86","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"de80f6a13614dbf2ca901d0112c1a4e82ac3f1108a7c02782225b6bf9ec25e86","first_computed_at":"2026-07-05T00:07:34.435035Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:07:34.435035Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eu92erjmOVdMOTFSaq4kYQmnRtm+04ZzL+Ol1h6tSn7m8RxiFM61LAG7QkXDR7tsMDpZyFWnURZnOmfCAGgGCA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:07:34.435526Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.00671","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8148eaab06b73477946dc87c3ac23763d122b0a84f7767e39ce0b2e430aa423f","sha256:e8926ee5f8648ddf3bd34fc78146c3a96adc8dfb50799eb3495e0605e4c79d60"],"state_sha256":"de792a94c1e1ccf2f2feea64bf480ebd2d3af72f02b7d6af3ac8e2daced992a1"}