{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:EW7R5UGHEPIGK5B2PYIEJTMDD6","short_pith_number":"pith:EW7R5UGH","canonical_record":{"source":{"id":"2109.11453","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-09-23T15:55:45Z","cross_cats_sorted":[],"title_canon_sha256":"a7038a03cb522b99afd8d10e8ccc5598dc9a6104872b95933154fa573ddebc06","abstract_canon_sha256":"f15ecb0e0c43cfb5f129f40ab9e8f41439cb9f1cb80382e60d78893b7b2cefc6"},"schema_version":"1.0"},"canonical_sha256":"25bf1ed0c723d065743a7e1044cd831f9c02d1db8ba0b1102ff80f06b8370931","source":{"kind":"arxiv","id":"2109.11453","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.11453","created_at":"2026-07-05T03:16:58Z"},{"alias_kind":"arxiv_version","alias_value":"2109.11453v1","created_at":"2026-07-05T03:16:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.11453","created_at":"2026-07-05T03:16:58Z"},{"alias_kind":"pith_short_12","alias_value":"EW7R5UGHEPIG","created_at":"2026-07-05T03:16:58Z"},{"alias_kind":"pith_short_16","alias_value":"EW7R5UGHEPIGK5B2","created_at":"2026-07-05T03:16:58Z"},{"alias_kind":"pith_short_8","alias_value":"EW7R5UGH","created_at":"2026-07-05T03:16:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:EW7R5UGHEPIGK5B2PYIEJTMDD6","target":"record","payload":{"canonical_record":{"source":{"id":"2109.11453","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-09-23T15:55:45Z","cross_cats_sorted":[],"title_canon_sha256":"a7038a03cb522b99afd8d10e8ccc5598dc9a6104872b95933154fa573ddebc06","abstract_canon_sha256":"f15ecb0e0c43cfb5f129f40ab9e8f41439cb9f1cb80382e60d78893b7b2cefc6"},"schema_version":"1.0"},"canonical_sha256":"25bf1ed0c723d065743a7e1044cd831f9c02d1db8ba0b1102ff80f06b8370931","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:16:58.228388Z","signature_b64":"k/T/PvOUqAOyeWo+a3zSqh5tx3uVpc+L6TsfDkxjCXRG3XzJgRVS0ezWrtprPpk+Bkl2zf44Cd+IzjkQeCqTBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"25bf1ed0c723d065743a7e1044cd831f9c02d1db8ba0b1102ff80f06b8370931","last_reissued_at":"2026-07-05T03:16:58.227982Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:16:58.227982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.11453","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":"2026-07-05T03:16:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VD2yQRI2SlT1lHPxUT4D8E1VIYfxNaSIC90+NYLM7Z+DtaCRed0o7FwRt2GJTiLGRnPoqAHIZFLClBE9MIm4Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T19:32:46.613858Z"},"content_sha256":"8b48dc53564f7174e6307e74f97e8eba9ec8a401bda7acf9442547bba8cf77f5","schema_version":"1.0","event_id":"sha256:8b48dc53564f7174e6307e74f97e8eba9ec8a401bda7acf9442547bba8cf77f5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:EW7R5UGHEPIGK5B2PYIEJTMDD6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Semantic Segmentation-assisted Scene Completion for LiDAR Point Clouds","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Feng Wen, Hao Zou, Hongbo Zhang, Tianxin Huang, Wanlong Li, Xin Kong, Xuemeng Yang, Yong Liu","submitted_at":"2021-09-23T15:55:45Z","abstract_excerpt":"Outdoor scene completion is a challenging issue in 3D scene understanding, which plays an important role in intelligent robotics and autonomous driving. Due to the sparsity of LiDAR acquisition, it is far more complex for 3D scene completion and semantic segmentation. Since semantic features can provide constraints and semantic priors for completion tasks, the relationship between them is worth exploring. Therefore, we propose an end-to-end semantic segmentation-assisted scene completion network, including a 2D completion branch and a 3D semantic segmentation branch. Specifically, the network "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.11453","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/2109.11453/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":"2026-07-05T03:16:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y/1a4NTq7E2+KAPVKy3cW31EeAo7b6DlCZZ9xViUHBXatCutQFPFIdpN0ehcpa9qkHi+3k1BQsDv8gT+BM6TBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T19:32:46.614237Z"},"content_sha256":"d50157689c45ecc9e244df194affcde8c0e2e87287144b71734192b5ba83a596","schema_version":"1.0","event_id":"sha256:d50157689c45ecc9e244df194affcde8c0e2e87287144b71734192b5ba83a596"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EW7R5UGHEPIGK5B2PYIEJTMDD6/bundle.json","state_url":"https://pith.science/pith/EW7R5UGHEPIGK5B2PYIEJTMDD6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EW7R5UGHEPIGK5B2PYIEJTMDD6/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":"2026-07-06T19:32:46Z","links":{"resolver":"https://pith.science/pith/EW7R5UGHEPIGK5B2PYIEJTMDD6","bundle":"https://pith.science/pith/EW7R5UGHEPIGK5B2PYIEJTMDD6/bundle.json","state":"https://pith.science/pith/EW7R5UGHEPIGK5B2PYIEJTMDD6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EW7R5UGHEPIGK5B2PYIEJTMDD6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:EW7R5UGHEPIGK5B2PYIEJTMDD6","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":"f15ecb0e0c43cfb5f129f40ab9e8f41439cb9f1cb80382e60d78893b7b2cefc6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-09-23T15:55:45Z","title_canon_sha256":"a7038a03cb522b99afd8d10e8ccc5598dc9a6104872b95933154fa573ddebc06"},"schema_version":"1.0","source":{"id":"2109.11453","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.11453","created_at":"2026-07-05T03:16:58Z"},{"alias_kind":"arxiv_version","alias_value":"2109.11453v1","created_at":"2026-07-05T03:16:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.11453","created_at":"2026-07-05T03:16:58Z"},{"alias_kind":"pith_short_12","alias_value":"EW7R5UGHEPIG","created_at":"2026-07-05T03:16:58Z"},{"alias_kind":"pith_short_16","alias_value":"EW7R5UGHEPIGK5B2","created_at":"2026-07-05T03:16:58Z"},{"alias_kind":"pith_short_8","alias_value":"EW7R5UGH","created_at":"2026-07-05T03:16:58Z"}],"graph_snapshots":[{"event_id":"sha256:d50157689c45ecc9e244df194affcde8c0e2e87287144b71734192b5ba83a596","target":"graph","created_at":"2026-07-05T03:16:58Z","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/2109.11453/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Outdoor scene completion is a challenging issue in 3D scene understanding, which plays an important role in intelligent robotics and autonomous driving. Due to the sparsity of LiDAR acquisition, it is far more complex for 3D scene completion and semantic segmentation. Since semantic features can provide constraints and semantic priors for completion tasks, the relationship between them is worth exploring. Therefore, we propose an end-to-end semantic segmentation-assisted scene completion network, including a 2D completion branch and a 3D semantic segmentation branch. Specifically, the network ","authors_text":"Feng Wen, Hao Zou, Hongbo Zhang, Tianxin Huang, Wanlong Li, Xin Kong, Xuemeng Yang, Yong Liu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-09-23T15:55:45Z","title":"Semantic Segmentation-assisted Scene Completion for LiDAR Point Clouds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.11453","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":"sha256:8b48dc53564f7174e6307e74f97e8eba9ec8a401bda7acf9442547bba8cf77f5","target":"record","created_at":"2026-07-05T03:16:58Z","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":"f15ecb0e0c43cfb5f129f40ab9e8f41439cb9f1cb80382e60d78893b7b2cefc6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-09-23T15:55:45Z","title_canon_sha256":"a7038a03cb522b99afd8d10e8ccc5598dc9a6104872b95933154fa573ddebc06"},"schema_version":"1.0","source":{"id":"2109.11453","kind":"arxiv","version":1}},"canonical_sha256":"25bf1ed0c723d065743a7e1044cd831f9c02d1db8ba0b1102ff80f06b8370931","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25bf1ed0c723d065743a7e1044cd831f9c02d1db8ba0b1102ff80f06b8370931","first_computed_at":"2026-07-05T03:16:58.227982Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:16:58.227982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k/T/PvOUqAOyeWo+a3zSqh5tx3uVpc+L6TsfDkxjCXRG3XzJgRVS0ezWrtprPpk+Bkl2zf44Cd+IzjkQeCqTBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:16:58.228388Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.11453","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8b48dc53564f7174e6307e74f97e8eba9ec8a401bda7acf9442547bba8cf77f5","sha256:d50157689c45ecc9e244df194affcde8c0e2e87287144b71734192b5ba83a596"],"state_sha256":"0cc773ee6e6bfcac4b07f6ee6a977d414210a90e02d32096a6bc1cae960a2d48"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D8qmOVdUhfbXRFkEhm50UZqPkWqrjowXi3tWAJnQmosrBUdJXXBPqN+qifsf3U0E5hCmL6AfQZVHT1mnfUipCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T19:32:46.616285Z","bundle_sha256":"43608b35d61acf3088bf202014dc06a710ac91dd5c34903186b2ab82b08e7998"}}