{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:HVJ7NVUQHF7SAMR7I4HS4YD34N","short_pith_number":"pith:HVJ7NVUQ","canonical_record":{"source":{"id":"2402.03708","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-06T05:02:33Z","cross_cats_sorted":[],"title_canon_sha256":"2557df8c192b39025d3559cf5afe30cadf486c28dd22963fac7b71e244260c9b","abstract_canon_sha256":"87a3028daf1949af2f27daa0f7dbaf6b18774dd511573271339799a49fe380f1"},"schema_version":"1.0"},"canonical_sha256":"3d53f6d690397f20323f470f2e607be36755c75cb8b26cdbe0156625a2f278de","source":{"kind":"arxiv","id":"2402.03708","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.03708","created_at":"2026-07-05T07:41:56Z"},{"alias_kind":"arxiv_version","alias_value":"2402.03708v1","created_at":"2026-07-05T07:41:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.03708","created_at":"2026-07-05T07:41:56Z"},{"alias_kind":"pith_short_12","alias_value":"HVJ7NVUQHF7S","created_at":"2026-07-05T07:41:56Z"},{"alias_kind":"pith_short_16","alias_value":"HVJ7NVUQHF7SAMR7","created_at":"2026-07-05T07:41:56Z"},{"alias_kind":"pith_short_8","alias_value":"HVJ7NVUQ","created_at":"2026-07-05T07:41:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:HVJ7NVUQHF7SAMR7I4HS4YD34N","target":"record","payload":{"canonical_record":{"source":{"id":"2402.03708","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-06T05:02:33Z","cross_cats_sorted":[],"title_canon_sha256":"2557df8c192b39025d3559cf5afe30cadf486c28dd22963fac7b71e244260c9b","abstract_canon_sha256":"87a3028daf1949af2f27daa0f7dbaf6b18774dd511573271339799a49fe380f1"},"schema_version":"1.0"},"canonical_sha256":"3d53f6d690397f20323f470f2e607be36755c75cb8b26cdbe0156625a2f278de","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:41:56.873436Z","signature_b64":"aNH8qjAEZxPuTC9+CjsMUTJtq3/T+V53XjuPG5QPtOAASyXNuuHOc4Rk+XgNlI818cGDb/gRD7BWWC5SpfctBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d53f6d690397f20323f470f2e607be36755c75cb8b26cdbe0156625a2f278de","last_reissued_at":"2026-07-05T07:41:56.873057Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:41:56.873057Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2402.03708","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":"2026-07-05T07:41:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ncElBkeYC7fPCVJI2ouNgqOb5KL0ggabB0G6UgeaRb+/3D67k1oxmyjVCw1SSXNkFKrDjqdccB56NJk9584IBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T06:52:33.178473Z"},"content_sha256":"9773a801490577c068d13aa0fba6b92b78490ece847d274a642db1a1f1f9b212","schema_version":"1.0","event_id":"sha256:9773a801490577c068d13aa0fba6b92b78490ece847d274a642db1a1f1f9b212"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:HVJ7NVUQHF7SAMR7I4HS4YD34N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SISP: A Benchmark Dataset for Fine-grained Ship Instance Segmentation in Panchromatic Satellite Images","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Guangjun He, Hongning Liu, Jian Guan, Mingjie Xie, Pengming Feng, Xuanjia Zhao, Xueliang Zhang","submitted_at":"2024-02-06T05:02:33Z","abstract_excerpt":"Fine-grained ship instance segmentation in satellite images holds considerable significance for monitoring maritime activities at sea. However, existing datasets often suffer from the scarcity of fine-grained information or pixel-wise localization annotations, as well as the insufficient image diversity and variations, thus limiting the research of this task. To this end, we propose a benchmark dataset for fine-grained Ship Instance Segmentation in Panchromatic satellite images, namely SISP, which contains 56,693 well-annotated ship instances with four fine-grained categories across 10,000 sli"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.03708","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/2402.03708/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":"2026-07-05T07:41:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZV0Ghs/izS5M0fe6XpBDGyO2fPHgNmsKMx/4nIkaqPFXXjaJWMYT2hEEC6HAah13CDo7sBKGBaTk/Xnt+FtJDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T06:52:33.179082Z"},"content_sha256":"ee86a568f01d86d1df7c916a95b4e731d7b84a0408117e0ecd8891c4d1081a16","schema_version":"1.0","event_id":"sha256:ee86a568f01d86d1df7c916a95b4e731d7b84a0408117e0ecd8891c4d1081a16"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HVJ7NVUQHF7SAMR7I4HS4YD34N/bundle.json","state_url":"https://pith.science/pith/HVJ7NVUQHF7SAMR7I4HS4YD34N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HVJ7NVUQHF7SAMR7I4HS4YD34N/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":"2026-08-14T06:52:33Z","links":{"resolver":"https://pith.science/pith/HVJ7NVUQHF7SAMR7I4HS4YD34N","bundle":"https://pith.science/pith/HVJ7NVUQHF7SAMR7I4HS4YD34N/bundle.json","state":"https://pith.science/pith/HVJ7NVUQHF7SAMR7I4HS4YD34N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HVJ7NVUQHF7SAMR7I4HS4YD34N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:HVJ7NVUQHF7SAMR7I4HS4YD34N","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":"87a3028daf1949af2f27daa0f7dbaf6b18774dd511573271339799a49fe380f1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-06T05:02:33Z","title_canon_sha256":"2557df8c192b39025d3559cf5afe30cadf486c28dd22963fac7b71e244260c9b"},"schema_version":"1.0","source":{"id":"2402.03708","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.03708","created_at":"2026-07-05T07:41:56Z"},{"alias_kind":"arxiv_version","alias_value":"2402.03708v1","created_at":"2026-07-05T07:41:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.03708","created_at":"2026-07-05T07:41:56Z"},{"alias_kind":"pith_short_12","alias_value":"HVJ7NVUQHF7S","created_at":"2026-07-05T07:41:56Z"},{"alias_kind":"pith_short_16","alias_value":"HVJ7NVUQHF7SAMR7","created_at":"2026-07-05T07:41:56Z"},{"alias_kind":"pith_short_8","alias_value":"HVJ7NVUQ","created_at":"2026-07-05T07:41:56Z"}],"graph_snapshots":[{"event_id":"sha256:ee86a568f01d86d1df7c916a95b4e731d7b84a0408117e0ecd8891c4d1081a16","target":"graph","created_at":"2026-07-05T07:41:56Z","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/2402.03708/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fine-grained ship instance segmentation in satellite images holds considerable significance for monitoring maritime activities at sea. However, existing datasets often suffer from the scarcity of fine-grained information or pixel-wise localization annotations, as well as the insufficient image diversity and variations, thus limiting the research of this task. To this end, we propose a benchmark dataset for fine-grained Ship Instance Segmentation in Panchromatic satellite images, namely SISP, which contains 56,693 well-annotated ship instances with four fine-grained categories across 10,000 sli","authors_text":"Guangjun He, Hongning Liu, Jian Guan, Mingjie Xie, Pengming Feng, Xuanjia Zhao, Xueliang Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-06T05:02:33Z","title":"SISP: A Benchmark Dataset for Fine-grained Ship Instance Segmentation in Panchromatic Satellite Images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.03708","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":"sha256:9773a801490577c068d13aa0fba6b92b78490ece847d274a642db1a1f1f9b212","target":"record","created_at":"2026-07-05T07:41:56Z","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":"87a3028daf1949af2f27daa0f7dbaf6b18774dd511573271339799a49fe380f1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-06T05:02:33Z","title_canon_sha256":"2557df8c192b39025d3559cf5afe30cadf486c28dd22963fac7b71e244260c9b"},"schema_version":"1.0","source":{"id":"2402.03708","kind":"arxiv","version":1}},"canonical_sha256":"3d53f6d690397f20323f470f2e607be36755c75cb8b26cdbe0156625a2f278de","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d53f6d690397f20323f470f2e607be36755c75cb8b26cdbe0156625a2f278de","first_computed_at":"2026-07-05T07:41:56.873057Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:41:56.873057Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aNH8qjAEZxPuTC9+CjsMUTJtq3/T+V53XjuPG5QPtOAASyXNuuHOc4Rk+XgNlI818cGDb/gRD7BWWC5SpfctBA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:41:56.873436Z","signed_message":"canonical_sha256_bytes"},"source_id":"2402.03708","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9773a801490577c068d13aa0fba6b92b78490ece847d274a642db1a1f1f9b212","sha256:ee86a568f01d86d1df7c916a95b4e731d7b84a0408117e0ecd8891c4d1081a16"],"state_sha256":"22467a6593a5f282188a47fc21c1ccbe2a8219c135d2a0e650af1d9ebe19cdd2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0RPr/alUIH1lBm1IbXclp9HMfuyCk0huOnUntmrMnIAH8APtSyD0oJJGbgiRmTkWd3cYTj0UOq4WCbPok34KAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T06:52:33.183930Z","bundle_sha256":"72697cc22aeb6aa15736331389fd863dfe01725dd0a93ab3f3b6bce177524917"}}