{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:G4G5MVNFCUNYCTWVGOP52TLK5V","short_pith_number":"pith:G4G5MVNF","canonical_record":{"source":{"id":"2505.21258","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-05-27T14:37:58Z","cross_cats_sorted":[],"title_canon_sha256":"185700239b2cc31bdf4d3cbcfe218a6b7065fd007146f5b96226c2f24660d31b","abstract_canon_sha256":"7da68c0bd3512d5ec6668ab3ddc174a591bb86e5466bbe0cda7bcf7621988dd1"},"schema_version":"1.0"},"canonical_sha256":"370dd655a5151b814ed5339fdd4d6aed5a76ea294fc6be32a1df00d4b5bf202b","source":{"kind":"arxiv","id":"2505.21258","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.21258","created_at":"2026-07-05T11:10:39Z"},{"alias_kind":"arxiv_version","alias_value":"2505.21258v1","created_at":"2026-07-05T11:10:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.21258","created_at":"2026-07-05T11:10:39Z"},{"alias_kind":"pith_short_12","alias_value":"G4G5MVNFCUNY","created_at":"2026-07-05T11:10:39Z"},{"alias_kind":"pith_short_16","alias_value":"G4G5MVNFCUNYCTWV","created_at":"2026-07-05T11:10:39Z"},{"alias_kind":"pith_short_8","alias_value":"G4G5MVNF","created_at":"2026-07-05T11:10:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:G4G5MVNFCUNYCTWVGOP52TLK5V","target":"record","payload":{"canonical_record":{"source":{"id":"2505.21258","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-05-27T14:37:58Z","cross_cats_sorted":[],"title_canon_sha256":"185700239b2cc31bdf4d3cbcfe218a6b7065fd007146f5b96226c2f24660d31b","abstract_canon_sha256":"7da68c0bd3512d5ec6668ab3ddc174a591bb86e5466bbe0cda7bcf7621988dd1"},"schema_version":"1.0"},"canonical_sha256":"370dd655a5151b814ed5339fdd4d6aed5a76ea294fc6be32a1df00d4b5bf202b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:10:39.400894Z","signature_b64":"TszAxy1oL1msMVKX40ZclbMcNLruamqSwJaGPN4snP7O2ygQlmc/EIbdxceFSmvDq+OvKSdkasJS1NYuf79CCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"370dd655a5151b814ed5339fdd4d6aed5a76ea294fc6be32a1df00d4b5bf202b","last_reissued_at":"2026-07-05T11:10:39.400416Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:10:39.400416Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.21258","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":"2026-07-05T11:10:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n28ledUCISOBRJjBV7ReoGVSp+bkVC33un+fSEPjvWngybAlir1/c0u3aHEGgQ7ZbfdNRgW2PcGUz4lx0/utBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T18:00:38.819884Z"},"content_sha256":"582aa90cd79354f6798a44260e73f32b4098955a8f74bb4781cf3d1acd7bab4d","schema_version":"1.0","event_id":"sha256:582aa90cd79354f6798a44260e73f32b4098955a8f74bb4781cf3d1acd7bab4d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:G4G5MVNFCUNYCTWVGOP52TLK5V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Plenodium: UnderWater 3D Scene Reconstruction with Plenoptic Medium Representation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Changguanng Wu, Chengjian Li, Jiangxin Dong, Jinhui Tang","submitted_at":"2025-05-27T14:37:58Z","abstract_excerpt":"We present Plenodium (plenoptic medium), an effective and efficient 3D representation framework capable of jointly modeling both objects and participating media. In contrast to existing medium representations that rely solely on view-dependent modeling, our novel plenoptic medium representation incorporates both directional and positional information through spherical harmonics encoding, enabling highly accurate underwater scene reconstruction. To address the initialization challenge in degraded underwater environments, we propose the pseudo-depth Gaussian complementation to augment COLMAP-der"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.21258","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/2505.21258/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":"2026-07-05T11:10:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"03J/ynSCjv2ZaaQs5KhGOivmkhb7FVl2waA3oQ+AaNeuYawD1Km3ESjDk7Tv2p52opG1gYPwgJOnnkP2QkK3Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T18:00:38.820407Z"},"content_sha256":"8a6914239110788a2a1701de4d0b0c2e6c282272609559c0ebfd3b7d57cb99fd","schema_version":"1.0","event_id":"sha256:8a6914239110788a2a1701de4d0b0c2e6c282272609559c0ebfd3b7d57cb99fd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G4G5MVNFCUNYCTWVGOP52TLK5V/bundle.json","state_url":"https://pith.science/pith/G4G5MVNFCUNYCTWVGOP52TLK5V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G4G5MVNFCUNYCTWVGOP52TLK5V/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":"2026-08-07T18:00:38Z","links":{"resolver":"https://pith.science/pith/G4G5MVNFCUNYCTWVGOP52TLK5V","bundle":"https://pith.science/pith/G4G5MVNFCUNYCTWVGOP52TLK5V/bundle.json","state":"https://pith.science/pith/G4G5MVNFCUNYCTWVGOP52TLK5V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G4G5MVNFCUNYCTWVGOP52TLK5V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:G4G5MVNFCUNYCTWVGOP52TLK5V","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":"7da68c0bd3512d5ec6668ab3ddc174a591bb86e5466bbe0cda7bcf7621988dd1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-05-27T14:37:58Z","title_canon_sha256":"185700239b2cc31bdf4d3cbcfe218a6b7065fd007146f5b96226c2f24660d31b"},"schema_version":"1.0","source":{"id":"2505.21258","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.21258","created_at":"2026-07-05T11:10:39Z"},{"alias_kind":"arxiv_version","alias_value":"2505.21258v1","created_at":"2026-07-05T11:10:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.21258","created_at":"2026-07-05T11:10:39Z"},{"alias_kind":"pith_short_12","alias_value":"G4G5MVNFCUNY","created_at":"2026-07-05T11:10:39Z"},{"alias_kind":"pith_short_16","alias_value":"G4G5MVNFCUNYCTWV","created_at":"2026-07-05T11:10:39Z"},{"alias_kind":"pith_short_8","alias_value":"G4G5MVNF","created_at":"2026-07-05T11:10:39Z"}],"graph_snapshots":[{"event_id":"sha256:8a6914239110788a2a1701de4d0b0c2e6c282272609559c0ebfd3b7d57cb99fd","target":"graph","created_at":"2026-07-05T11:10:39Z","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/2505.21258/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present Plenodium (plenoptic medium), an effective and efficient 3D representation framework capable of jointly modeling both objects and participating media. In contrast to existing medium representations that rely solely on view-dependent modeling, our novel plenoptic medium representation incorporates both directional and positional information through spherical harmonics encoding, enabling highly accurate underwater scene reconstruction. To address the initialization challenge in degraded underwater environments, we propose the pseudo-depth Gaussian complementation to augment COLMAP-der","authors_text":"Changguanng Wu, Chengjian Li, Jiangxin Dong, Jinhui Tang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-05-27T14:37:58Z","title":"Plenodium: UnderWater 3D Scene Reconstruction with Plenoptic Medium Representation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.21258","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":"sha256:582aa90cd79354f6798a44260e73f32b4098955a8f74bb4781cf3d1acd7bab4d","target":"record","created_at":"2026-07-05T11:10:39Z","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":"7da68c0bd3512d5ec6668ab3ddc174a591bb86e5466bbe0cda7bcf7621988dd1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-05-27T14:37:58Z","title_canon_sha256":"185700239b2cc31bdf4d3cbcfe218a6b7065fd007146f5b96226c2f24660d31b"},"schema_version":"1.0","source":{"id":"2505.21258","kind":"arxiv","version":1}},"canonical_sha256":"370dd655a5151b814ed5339fdd4d6aed5a76ea294fc6be32a1df00d4b5bf202b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"370dd655a5151b814ed5339fdd4d6aed5a76ea294fc6be32a1df00d4b5bf202b","first_computed_at":"2026-07-05T11:10:39.400416Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:10:39.400416Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TszAxy1oL1msMVKX40ZclbMcNLruamqSwJaGPN4snP7O2ygQlmc/EIbdxceFSmvDq+OvKSdkasJS1NYuf79CCg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:10:39.400894Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.21258","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:582aa90cd79354f6798a44260e73f32b4098955a8f74bb4781cf3d1acd7bab4d","sha256:8a6914239110788a2a1701de4d0b0c2e6c282272609559c0ebfd3b7d57cb99fd"],"state_sha256":"4176a834c9885da772057a73db6a3a51903c53e11416e620b1fcdd106ef823e9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A70JTyPyAQMfDLeAl7uj79GVLZPpghp9XaPSVHLj5+V4N7i5KgNLw9f3ZtsiIpy4hOrXGNnULT8oEKiqEo0zCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T18:00:38.825796Z","bundle_sha256":"8a9ec4b20c721ffaa4ae5d3aad29da16c096d517bb9a2f27dcf8047c820349d1"}}