{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:PKQGJBMUH6KNN4HX6S7HX6NC5S","short_pith_number":"pith:PKQGJBMU","canonical_record":{"source":{"id":"2501.06053","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-01-10T15:33:37Z","cross_cats_sorted":[],"title_canon_sha256":"667f995c8489dffaf4308c0c6e06861f97649818fc1687f5ed11212ce78256fd","abstract_canon_sha256":"2c3d2234cf2176ab92c53c2bb8229a41564bf5210736e2797c1cdd82f44b4d57"},"schema_version":"1.0"},"canonical_sha256":"7aa06485943f94d6f0f7f4be7bf9a2ec85ce645cad3f12bb0583d59c6d7ac67e","source":{"kind":"arxiv","id":"2501.06053","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.06053","created_at":"2026-07-05T09:59:32Z"},{"alias_kind":"arxiv_version","alias_value":"2501.06053v1","created_at":"2026-07-05T09:59:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.06053","created_at":"2026-07-05T09:59:32Z"},{"alias_kind":"pith_short_12","alias_value":"PKQGJBMUH6KN","created_at":"2026-07-05T09:59:32Z"},{"alias_kind":"pith_short_16","alias_value":"PKQGJBMUH6KNN4HX","created_at":"2026-07-05T09:59:32Z"},{"alias_kind":"pith_short_8","alias_value":"PKQGJBMU","created_at":"2026-07-05T09:59:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:PKQGJBMUH6KNN4HX6S7HX6NC5S","target":"record","payload":{"canonical_record":{"source":{"id":"2501.06053","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-01-10T15:33:37Z","cross_cats_sorted":[],"title_canon_sha256":"667f995c8489dffaf4308c0c6e06861f97649818fc1687f5ed11212ce78256fd","abstract_canon_sha256":"2c3d2234cf2176ab92c53c2bb8229a41564bf5210736e2797c1cdd82f44b4d57"},"schema_version":"1.0"},"canonical_sha256":"7aa06485943f94d6f0f7f4be7bf9a2ec85ce645cad3f12bb0583d59c6d7ac67e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:59:32.392057Z","signature_b64":"aDH0BcoIhpYkiIkGrrzKmHXumDs77ugDVzA7AkELIhsWWuT/H0S7vctcFfj52a36LpWhTCSkn7kH3Qd7q7xFAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7aa06485943f94d6f0f7f4be7bf9a2ec85ce645cad3f12bb0583d59c6d7ac67e","last_reissued_at":"2026-07-05T09:59:32.391666Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:59:32.391666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2501.06053","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":"2026-07-05T09:59:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T/mGsQANLhIgSRy2TZWe++d9/L/Atu6R9HsaAxZFZP29Cvvw5kc+10L25u3soBBJPM9q1oBI7VG6j9WuaEN1AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T03:36:08.038978Z"},"content_sha256":"7cf90a29d7035a1ba18b4697b9365edcbf9c0e5b68c59c61c2892cb3cb6389a1","schema_version":"1.0","event_id":"sha256:7cf90a29d7035a1ba18b4697b9365edcbf9c0e5b68c59c61c2892cb3cb6389a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:PKQGJBMUH6KNN4HX6S7HX6NC5S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhancing, Refining, and Fusing: Towards Robust Multi-Scale and Dense Ship Detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Chunyan Zhang, Congxia Zhao, Jian Dong, Shen Cao, Xiongjun Fu","submitted_at":"2025-01-10T15:33:37Z","abstract_excerpt":"Synthetic aperture radar (SAR) imaging, celebrated for its high resolution, all-weather capability, and day-night operability, is indispensable for maritime applications. However, ship detection in SAR imagery faces significant challenges, including complex backgrounds, densely arranged targets, and large scale variations. To address these issues, we propose a novel framework, Center-Aware SAR Ship Detector (CASS-Det), designed for robust multi-scale and densely packed ship detection. CASS-Det integrates three key innovations: (1) a center enhancement module (CEM) that employs rotational convo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.06053","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/2501.06053/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":"2026-07-05T09:59:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tbi9LUnzkm65cct5lG0TJmiE08kWj05yToL0v/qPyDt7r6dD8adIKuL6pvgRjMwklApiEdDiIuBgzaCtFqtYCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T03:36:08.039402Z"},"content_sha256":"2b924ef7fa7ab95aeb35d3774639835cbe92a3642724f8b650c4d327662b55e3","schema_version":"1.0","event_id":"sha256:2b924ef7fa7ab95aeb35d3774639835cbe92a3642724f8b650c4d327662b55e3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PKQGJBMUH6KNN4HX6S7HX6NC5S/bundle.json","state_url":"https://pith.science/pith/PKQGJBMUH6KNN4HX6S7HX6NC5S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PKQGJBMUH6KNN4HX6S7HX6NC5S/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":"2026-07-08T03:36:08Z","links":{"resolver":"https://pith.science/pith/PKQGJBMUH6KNN4HX6S7HX6NC5S","bundle":"https://pith.science/pith/PKQGJBMUH6KNN4HX6S7HX6NC5S/bundle.json","state":"https://pith.science/pith/PKQGJBMUH6KNN4HX6S7HX6NC5S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PKQGJBMUH6KNN4HX6S7HX6NC5S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PKQGJBMUH6KNN4HX6S7HX6NC5S","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":"2c3d2234cf2176ab92c53c2bb8229a41564bf5210736e2797c1cdd82f44b4d57","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-01-10T15:33:37Z","title_canon_sha256":"667f995c8489dffaf4308c0c6e06861f97649818fc1687f5ed11212ce78256fd"},"schema_version":"1.0","source":{"id":"2501.06053","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.06053","created_at":"2026-07-05T09:59:32Z"},{"alias_kind":"arxiv_version","alias_value":"2501.06053v1","created_at":"2026-07-05T09:59:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.06053","created_at":"2026-07-05T09:59:32Z"},{"alias_kind":"pith_short_12","alias_value":"PKQGJBMUH6KN","created_at":"2026-07-05T09:59:32Z"},{"alias_kind":"pith_short_16","alias_value":"PKQGJBMUH6KNN4HX","created_at":"2026-07-05T09:59:32Z"},{"alias_kind":"pith_short_8","alias_value":"PKQGJBMU","created_at":"2026-07-05T09:59:32Z"}],"graph_snapshots":[{"event_id":"sha256:2b924ef7fa7ab95aeb35d3774639835cbe92a3642724f8b650c4d327662b55e3","target":"graph","created_at":"2026-07-05T09:59:32Z","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/2501.06053/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Synthetic aperture radar (SAR) imaging, celebrated for its high resolution, all-weather capability, and day-night operability, is indispensable for maritime applications. However, ship detection in SAR imagery faces significant challenges, including complex backgrounds, densely arranged targets, and large scale variations. To address these issues, we propose a novel framework, Center-Aware SAR Ship Detector (CASS-Det), designed for robust multi-scale and densely packed ship detection. CASS-Det integrates three key innovations: (1) a center enhancement module (CEM) that employs rotational convo","authors_text":"Chunyan Zhang, Congxia Zhao, Jian Dong, Shen Cao, Xiongjun Fu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-01-10T15:33:37Z","title":"Enhancing, Refining, and Fusing: Towards Robust Multi-Scale and Dense Ship Detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.06053","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":"sha256:7cf90a29d7035a1ba18b4697b9365edcbf9c0e5b68c59c61c2892cb3cb6389a1","target":"record","created_at":"2026-07-05T09:59:32Z","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":"2c3d2234cf2176ab92c53c2bb8229a41564bf5210736e2797c1cdd82f44b4d57","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-01-10T15:33:37Z","title_canon_sha256":"667f995c8489dffaf4308c0c6e06861f97649818fc1687f5ed11212ce78256fd"},"schema_version":"1.0","source":{"id":"2501.06053","kind":"arxiv","version":1}},"canonical_sha256":"7aa06485943f94d6f0f7f4be7bf9a2ec85ce645cad3f12bb0583d59c6d7ac67e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7aa06485943f94d6f0f7f4be7bf9a2ec85ce645cad3f12bb0583d59c6d7ac67e","first_computed_at":"2026-07-05T09:59:32.391666Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:59:32.391666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aDH0BcoIhpYkiIkGrrzKmHXumDs77ugDVzA7AkELIhsWWuT/H0S7vctcFfj52a36LpWhTCSkn7kH3Qd7q7xFAw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:59:32.392057Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.06053","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7cf90a29d7035a1ba18b4697b9365edcbf9c0e5b68c59c61c2892cb3cb6389a1","sha256:2b924ef7fa7ab95aeb35d3774639835cbe92a3642724f8b650c4d327662b55e3"],"state_sha256":"00d10504cbe0b1394c325785243e24d0b0a4195c46f85b9f59bfd25cb88914d5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XpKS+z7R/3A8gAwp080YW4Rz6D3BaV8uc9MW6l0bnOYBzLdVTf0qVdbG3rHgPWe2TfC8mmkRVjTwGTU/XgN0BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-08T03:36:08.042623Z","bundle_sha256":"aec78c2a9dce59a5e998bded9cb62ad63fbccde5e54091dc845476390aa42697"}}