{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:S5VLLPKSDVYOPY2HHTAX5A56AP","short_pith_number":"pith:S5VLLPKS","canonical_record":{"source":{"id":"2501.11520","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-01-20T14:49:54Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"6fea73facee383b39e8df595969b0be16300dd91c10dcc4943abfe45bf702f5b","abstract_canon_sha256":"4c1ae62f4a9c48da72b93ea2472e525f566c947aa6a34f53dc413f754f4b2202"},"schema_version":"1.0"},"canonical_sha256":"976ab5bd521d70e7e3473cc17e83be03c6c7ff4d291e277d47127632b248d6b3","source":{"kind":"arxiv","id":"2501.11520","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.11520","created_at":"2026-07-05T10:03:09Z"},{"alias_kind":"arxiv_version","alias_value":"2501.11520v1","created_at":"2026-07-05T10:03:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.11520","created_at":"2026-07-05T10:03:09Z"},{"alias_kind":"pith_short_12","alias_value":"S5VLLPKSDVYO","created_at":"2026-07-05T10:03:09Z"},{"alias_kind":"pith_short_16","alias_value":"S5VLLPKSDVYOPY2H","created_at":"2026-07-05T10:03:09Z"},{"alias_kind":"pith_short_8","alias_value":"S5VLLPKS","created_at":"2026-07-05T10:03:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:S5VLLPKSDVYOPY2HHTAX5A56AP","target":"record","payload":{"canonical_record":{"source":{"id":"2501.11520","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-01-20T14:49:54Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"6fea73facee383b39e8df595969b0be16300dd91c10dcc4943abfe45bf702f5b","abstract_canon_sha256":"4c1ae62f4a9c48da72b93ea2472e525f566c947aa6a34f53dc413f754f4b2202"},"schema_version":"1.0"},"canonical_sha256":"976ab5bd521d70e7e3473cc17e83be03c6c7ff4d291e277d47127632b248d6b3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:03:09.553936Z","signature_b64":"wQP595yXwgsCxM0oXESHByaoMfkGiuIKuEQl1jQQQQrvWs1EOZJYUb3luocNDz/zXOmOHz+JmDSOeTTehZ9SAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"976ab5bd521d70e7e3473cc17e83be03c6c7ff4d291e277d47127632b248d6b3","last_reissued_at":"2026-07-05T10:03:09.553492Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:03:09.553492Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2501.11520","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":"2026-07-05T10:03:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dWFr3EiN0kMUpyTkdFeXnLmB9LueT0xsbvm08dZS+Oe+b89DE9aaf/PVnhEViiI/kzZK4OPJEu4bBC+NL/ifDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T12:28:24.957396Z"},"content_sha256":"9e800f8f3b93693f38211806b7731d2bc7ea6665ded71ab325f61c0d1da567fa","schema_version":"1.0","event_id":"sha256:9e800f8f3b93693f38211806b7731d2bc7ea6665ded71ab325f61c0d1da567fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:S5VLLPKSDVYOPY2HHTAX5A56AP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fundus Image Quality Assessment and Enhancement: a Systematic Review","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Haojin Li, Heng Li, Huazhu Fu, Jiang Liu, Ke Niu, Mingyang Ou, Xiangyang Yu, Xiaoqing Zhang","submitted_at":"2025-01-20T14:49:54Z","abstract_excerpt":"As an affordable and convenient eye scan, fundus photography holds the potential for preventing vision impairment, especially in resource-limited regions. However, fundus image degradation is common under intricate imaging environments, impacting following diagnosis and treatment. Consequently, image quality assessment (IQA) and enhancement (IQE) are essential for ensuring the clinical value and reliability of fundus images. While existing reviews offer some overview of this field, a comprehensive analysis of the interplay between IQA and IQE, along with their clinical deployment challenges, i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.11520","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/2501.11520/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":"2026-07-05T10:03:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jj4YuQWP/9B72vYcQHijSJ2waDtp/jR+wlu74b/o5juvKCNO/06af+P3ZuZqJedoToBeIyTFuc/JUZ2ljZzfDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T12:28:24.957779Z"},"content_sha256":"c0908dd62c904462a6cfa4f6ad7fafb1cdf89d8ab3f93a10b882ddc97131c298","schema_version":"1.0","event_id":"sha256:c0908dd62c904462a6cfa4f6ad7fafb1cdf89d8ab3f93a10b882ddc97131c298"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S5VLLPKSDVYOPY2HHTAX5A56AP/bundle.json","state_url":"https://pith.science/pith/S5VLLPKSDVYOPY2HHTAX5A56AP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S5VLLPKSDVYOPY2HHTAX5A56AP/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":"2026-07-06T12:28:24Z","links":{"resolver":"https://pith.science/pith/S5VLLPKSDVYOPY2HHTAX5A56AP","bundle":"https://pith.science/pith/S5VLLPKSDVYOPY2HHTAX5A56AP/bundle.json","state":"https://pith.science/pith/S5VLLPKSDVYOPY2HHTAX5A56AP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S5VLLPKSDVYOPY2HHTAX5A56AP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:S5VLLPKSDVYOPY2HHTAX5A56AP","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":"4c1ae62f4a9c48da72b93ea2472e525f566c947aa6a34f53dc413f754f4b2202","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-01-20T14:49:54Z","title_canon_sha256":"6fea73facee383b39e8df595969b0be16300dd91c10dcc4943abfe45bf702f5b"},"schema_version":"1.0","source":{"id":"2501.11520","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.11520","created_at":"2026-07-05T10:03:09Z"},{"alias_kind":"arxiv_version","alias_value":"2501.11520v1","created_at":"2026-07-05T10:03:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.11520","created_at":"2026-07-05T10:03:09Z"},{"alias_kind":"pith_short_12","alias_value":"S5VLLPKSDVYO","created_at":"2026-07-05T10:03:09Z"},{"alias_kind":"pith_short_16","alias_value":"S5VLLPKSDVYOPY2H","created_at":"2026-07-05T10:03:09Z"},{"alias_kind":"pith_short_8","alias_value":"S5VLLPKS","created_at":"2026-07-05T10:03:09Z"}],"graph_snapshots":[{"event_id":"sha256:c0908dd62c904462a6cfa4f6ad7fafb1cdf89d8ab3f93a10b882ddc97131c298","target":"graph","created_at":"2026-07-05T10:03:09Z","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/2501.11520/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"As an affordable and convenient eye scan, fundus photography holds the potential for preventing vision impairment, especially in resource-limited regions. However, fundus image degradation is common under intricate imaging environments, impacting following diagnosis and treatment. Consequently, image quality assessment (IQA) and enhancement (IQE) are essential for ensuring the clinical value and reliability of fundus images. While existing reviews offer some overview of this field, a comprehensive analysis of the interplay between IQA and IQE, along with their clinical deployment challenges, i","authors_text":"Haojin Li, Heng Li, Huazhu Fu, Jiang Liu, Ke Niu, Mingyang Ou, Xiangyang Yu, Xiaoqing Zhang","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-01-20T14:49:54Z","title":"Fundus Image Quality Assessment and Enhancement: a Systematic Review"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.11520","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":"sha256:9e800f8f3b93693f38211806b7731d2bc7ea6665ded71ab325f61c0d1da567fa","target":"record","created_at":"2026-07-05T10:03:09Z","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":"4c1ae62f4a9c48da72b93ea2472e525f566c947aa6a34f53dc413f754f4b2202","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-01-20T14:49:54Z","title_canon_sha256":"6fea73facee383b39e8df595969b0be16300dd91c10dcc4943abfe45bf702f5b"},"schema_version":"1.0","source":{"id":"2501.11520","kind":"arxiv","version":1}},"canonical_sha256":"976ab5bd521d70e7e3473cc17e83be03c6c7ff4d291e277d47127632b248d6b3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"976ab5bd521d70e7e3473cc17e83be03c6c7ff4d291e277d47127632b248d6b3","first_computed_at":"2026-07-05T10:03:09.553492Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:03:09.553492Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wQP595yXwgsCxM0oXESHByaoMfkGiuIKuEQl1jQQQQrvWs1EOZJYUb3luocNDz/zXOmOHz+JmDSOeTTehZ9SAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:03:09.553936Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.11520","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9e800f8f3b93693f38211806b7731d2bc7ea6665ded71ab325f61c0d1da567fa","sha256:c0908dd62c904462a6cfa4f6ad7fafb1cdf89d8ab3f93a10b882ddc97131c298"],"state_sha256":"a9701b7ea51e064633144091d8b4f0f7481b3de2d06458ca19609cc449632bca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NaiiYGkwfvxkH0FOwJGgBJm1Fx7k0nEsB2vFSD4LQ3Oyb2v68eR4K3LtebdeAfP/l83pyXmlUS6FtsUGcw25AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T12:28:24.959703Z","bundle_sha256":"6713d3f136aedac17dd9cd199276ba6815f05920f310c578cc82b315e4514c55"}}