{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:3DOAJTMSV5XY2I3WPFOOLOFRZX","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":"3f8a9a5a93e4a249386e46f3cd92802fbd73b733e7f8c6af30af2ddcaa81aebe","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-12-01T15:21:06Z","title_canon_sha256":"a64f39d1d014aa49a099cb6a77036cf14da6e6e4a26fdb1821f2a312df52e805"},"schema_version":"1.0","source":{"id":"2112.00560","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.00560","created_at":"2026-07-05T04:25:49Z"},{"alias_kind":"arxiv_version","alias_value":"2112.00560v2","created_at":"2026-07-05T04:25:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.00560","created_at":"2026-07-05T04:25:49Z"},{"alias_kind":"pith_short_12","alias_value":"3DOAJTMSV5XY","created_at":"2026-07-05T04:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"3DOAJTMSV5XY2I3W","created_at":"2026-07-05T04:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"3DOAJTMS","created_at":"2026-07-05T04:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:9e32200face8c6c1c22b06059320e3374b5297b0f5997cf374aa83b28d2420db","target":"graph","created_at":"2026-07-05T04:25:49Z","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/2112.00560/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Geometry-based point cloud compression (G-PCC) can achieve remarkable compression efficiency for point clouds. However, it still leads to serious attribute compression artifacts, especially under low bitrate scenarios. In this paper, we propose a Multi-Scale Graph Attention Network (MS-GAT) to remove the artifacts of point cloud attributes compressed by G-PCC. We first construct a graph based on point cloud geometry coordinates and then use the Chebyshev graph convolutions to extract features of point cloud attributes. Considering that one point may be correlated with points both near and far ","authors_text":"Dong Liu, Li Li, Xihua Sheng, Zhiwei Xiong","cross_cats":["eess.IV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-12-01T15:21:06Z","title":"Attribute Artifacts Removal for Geometry-based Point Cloud Compression"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.00560","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:d4701847227d430c2f4f3a800f1a4bb07c4b4e47a749b231cdbc622569353de2","target":"record","created_at":"2026-07-05T04:25:49Z","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":"3f8a9a5a93e4a249386e46f3cd92802fbd73b733e7f8c6af30af2ddcaa81aebe","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-12-01T15:21:06Z","title_canon_sha256":"a64f39d1d014aa49a099cb6a77036cf14da6e6e4a26fdb1821f2a312df52e805"},"schema_version":"1.0","source":{"id":"2112.00560","kind":"arxiv","version":2}},"canonical_sha256":"d8dc04cd92af6f8d2376795ce5b8b1cdca4bd9bb3fd04a97557c1654fb85cc5a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d8dc04cd92af6f8d2376795ce5b8b1cdca4bd9bb3fd04a97557c1654fb85cc5a","first_computed_at":"2026-07-05T04:25:49.904227Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:25:49.904227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TQ2L5YQhiDBH4T4Juk4Iptv7vkv28hZig+Zu87MFHP0kAmjSKGFVv35mmxyiI4Wo3bcEjIQSRbsqxOzQAfE1BA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:25:49.904785Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.00560","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d4701847227d430c2f4f3a800f1a4bb07c4b4e47a749b231cdbc622569353de2","sha256:9e32200face8c6c1c22b06059320e3374b5297b0f5997cf374aa83b28d2420db"],"state_sha256":"bd0bd4d0044e7a7702c0b815e9399c95f77b40c9c9629bff36854fb0acac8031"}