{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:OUIJEV354RJWQMQWTK2KQUMJ4X","short_pith_number":"pith:OUIJEV35","canonical_record":{"source":{"id":"1707.06865","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2017-07-21T12:30:12Z","cross_cats_sorted":[],"title_canon_sha256":"bf98eeac54ec206ef23423d194b9d0bcf810b1ac7f061edc322eb62744385de8","abstract_canon_sha256":"636093531c2b08febb09aadd6d3fa64cbd88df697bcc3b7cdaf2e92d9a98fed2"},"schema_version":"1.0"},"canonical_sha256":"751092577de4536832169ab4a85189e5e41e1848307b7314aaa738446723d0d2","source":{"kind":"arxiv","id":"1707.06865","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.06865","created_at":"2026-05-18T00:16:31Z"},{"alias_kind":"arxiv_version","alias_value":"1707.06865v1","created_at":"2026-05-18T00:16:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.06865","created_at":"2026-05-18T00:16:31Z"},{"alias_kind":"pith_short_12","alias_value":"OUIJEV354RJW","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"OUIJEV354RJWQMQW","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"OUIJEV35","created_at":"2026-05-18T12:31:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:OUIJEV354RJWQMQWTK2KQUMJ4X","target":"record","payload":{"canonical_record":{"source":{"id":"1707.06865","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2017-07-21T12:30:12Z","cross_cats_sorted":[],"title_canon_sha256":"bf98eeac54ec206ef23423d194b9d0bcf810b1ac7f061edc322eb62744385de8","abstract_canon_sha256":"636093531c2b08febb09aadd6d3fa64cbd88df697bcc3b7cdaf2e92d9a98fed2"},"schema_version":"1.0"},"canonical_sha256":"751092577de4536832169ab4a85189e5e41e1848307b7314aaa738446723d0d2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:16:31.803077Z","signature_b64":"AY0TPdeshg6HIcxAz1GauS6X7spSUh0qf2NJ24S7z/fosTOROaWxgDB5jbeUOLYYI8NFTI322s/phZHCMUHsCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"751092577de4536832169ab4a85189e5e41e1848307b7314aaa738446723d0d2","last_reissued_at":"2026-05-18T00:16:31.802654Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:16:31.802654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.06865","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":"2026-05-18T00:16:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3B33HI13OHNhjZaUvdmNE7T4lmKM+5ga8tfq1/mKwYtv6jpJLxivcDmmaB6BRSPKYtyJNJ6a5tLdPkucX2szCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T10:39:23.931268Z"},"content_sha256":"7711a90f4f3a64b02cfd6d3074aba4bdd2ca2167772c21e68544eabfd9cfe8a2","schema_version":"1.0","event_id":"sha256:7711a90f4f3a64b02cfd6d3074aba4bdd2ca2167772c21e68544eabfd9cfe8a2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:OUIJEV354RJWQMQWTK2KQUMJ4X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Retinal Microaneurysms Detection using Local Convergence Index Features","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Bart M. ter Haar Romeny, Behdad Dashtbozorg, Jiong Zhang","submitted_at":"2017-07-21T12:30:12Z","abstract_excerpt":"Retinal microaneurysms are the earliest clinical sign of diabetic retinopathy disease. Detection of microaneurysms is crucial for the early diagnosis of diabetic retinopathy and prevention of blindness. In this paper, a novel and reliable method for automatic detection of microaneurysms in retinal images is proposed. In the first stage of the proposed method, several preliminary microaneurysm candidates are extracted using a gradient weighting technique and an iterative thresholding approach. In the next stage, in addition to intensity and shape descriptors, a new set of features based on loca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.06865","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":""},"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":"2026-05-18T00:16:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6nx/XHQaioJhjmiVkU+e6fZEL8I4Am3OEnz2KbInjic8meyIjnuILo9Womb6Ih59NzFiVQH0W2IOxJtnk1/QDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T10:39:23.931913Z"},"content_sha256":"c05b9b10747a65bbd5e6fd3ffd34b1c9a1a9de2013c92424eb35282f3f38582a","schema_version":"1.0","event_id":"sha256:c05b9b10747a65bbd5e6fd3ffd34b1c9a1a9de2013c92424eb35282f3f38582a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OUIJEV354RJWQMQWTK2KQUMJ4X/bundle.json","state_url":"https://pith.science/pith/OUIJEV354RJWQMQWTK2KQUMJ4X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OUIJEV354RJWQMQWTK2KQUMJ4X/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":"2026-06-07T10:39:23Z","links":{"resolver":"https://pith.science/pith/OUIJEV354RJWQMQWTK2KQUMJ4X","bundle":"https://pith.science/pith/OUIJEV354RJWQMQWTK2KQUMJ4X/bundle.json","state":"https://pith.science/pith/OUIJEV354RJWQMQWTK2KQUMJ4X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OUIJEV354RJWQMQWTK2KQUMJ4X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:OUIJEV354RJWQMQWTK2KQUMJ4X","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":"636093531c2b08febb09aadd6d3fa64cbd88df697bcc3b7cdaf2e92d9a98fed2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2017-07-21T12:30:12Z","title_canon_sha256":"bf98eeac54ec206ef23423d194b9d0bcf810b1ac7f061edc322eb62744385de8"},"schema_version":"1.0","source":{"id":"1707.06865","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.06865","created_at":"2026-05-18T00:16:31Z"},{"alias_kind":"arxiv_version","alias_value":"1707.06865v1","created_at":"2026-05-18T00:16:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.06865","created_at":"2026-05-18T00:16:31Z"},{"alias_kind":"pith_short_12","alias_value":"OUIJEV354RJW","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"OUIJEV354RJWQMQW","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"OUIJEV35","created_at":"2026-05-18T12:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:c05b9b10747a65bbd5e6fd3ffd34b1c9a1a9de2013c92424eb35282f3f38582a","target":"graph","created_at":"2026-05-18T00:16:31Z","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"},"paper":{"abstract_excerpt":"Retinal microaneurysms are the earliest clinical sign of diabetic retinopathy disease. Detection of microaneurysms is crucial for the early diagnosis of diabetic retinopathy and prevention of blindness. In this paper, a novel and reliable method for automatic detection of microaneurysms in retinal images is proposed. In the first stage of the proposed method, several preliminary microaneurysm candidates are extracted using a gradient weighting technique and an iterative thresholding approach. In the next stage, in addition to intensity and shape descriptors, a new set of features based on loca","authors_text":"Bart M. ter Haar Romeny, Behdad Dashtbozorg, Jiong Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2017-07-21T12:30:12Z","title":"Retinal Microaneurysms Detection using Local Convergence Index Features"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.06865","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":"sha256:7711a90f4f3a64b02cfd6d3074aba4bdd2ca2167772c21e68544eabfd9cfe8a2","target":"record","created_at":"2026-05-18T00:16:31Z","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":"636093531c2b08febb09aadd6d3fa64cbd88df697bcc3b7cdaf2e92d9a98fed2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2017-07-21T12:30:12Z","title_canon_sha256":"bf98eeac54ec206ef23423d194b9d0bcf810b1ac7f061edc322eb62744385de8"},"schema_version":"1.0","source":{"id":"1707.06865","kind":"arxiv","version":1}},"canonical_sha256":"751092577de4536832169ab4a85189e5e41e1848307b7314aaa738446723d0d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"751092577de4536832169ab4a85189e5e41e1848307b7314aaa738446723d0d2","first_computed_at":"2026-05-18T00:16:31.802654Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:31.802654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AY0TPdeshg6HIcxAz1GauS6X7spSUh0qf2NJ24S7z/fosTOROaWxgDB5jbeUOLYYI8NFTI322s/phZHCMUHsCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:31.803077Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.06865","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7711a90f4f3a64b02cfd6d3074aba4bdd2ca2167772c21e68544eabfd9cfe8a2","sha256:c05b9b10747a65bbd5e6fd3ffd34b1c9a1a9de2013c92424eb35282f3f38582a"],"state_sha256":"9fdb182b0a7f0f9a0360e1c783deb70cbd982b17b3622d9ebdb5ce3898e8e96f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dn0hkn9lOX3kmJRNtFa99Iiqimf5Fj1dpul1hulC186FuVmnXNKbLy0/2JYfDNp7zqzoKzPRoiNVcHkzmSmECg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T10:39:23.935308Z","bundle_sha256":"b3e8ab84cd7d19dae18cf492b8eb4be3299e9ee6e48fe194fbcf05fb01a589ff"}}