{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:FBCNAJU36H3TBOPVM2QM4L4F5A","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":"8fd95b9f0cee2f6a941a8ceba1aa1bef0514366ffff7b94d6c9495a235a4524b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-18T05:14:58Z","title_canon_sha256":"5c8b0ae1cf1fef8378be011c988057c524af95b1e533e23262d52b463a140681"},"schema_version":"1.0","source":{"id":"1604.04988","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.04988","created_at":"2026-05-18T01:16:56Z"},{"alias_kind":"arxiv_version","alias_value":"1604.04988v1","created_at":"2026-05-18T01:16:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.04988","created_at":"2026-05-18T01:16:56Z"},{"alias_kind":"pith_short_12","alias_value":"FBCNAJU36H3T","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FBCNAJU36H3TBOPV","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FBCNAJU3","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:d561609b4a2ad3b63d909be90a5e87db22f974f3fbf172a2055184ffe04e7e6c","target":"graph","created_at":"2026-05-18T01:16:56Z","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"},"paper":{"abstract_excerpt":"The solar corona is the origin of very dynamic events that are mostly produced in active regions (AR) and coronal holes (CH). The exact location of these large-scale features can be determined by applying image-processing approaches to extreme-ultraviolet (EUV) data.\n  We here investigate the problem of segmentation of solar EUV images into ARs, CHs, and quiet-Sun (QS) images in a firm Bayesian way. On the basis of Bayes' rule, we need to obtain both prior and likelihood models. To find the prior model of an image, we used a Potts model in non-local mode. To construct the likelihood model, we ","authors_text":"Ali Amiri, Hossein Safari, Mohsen Javaherian, Saeid Arish","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-18T05:14:58Z","title":"Extraction of Active Regions and Coronal Holes from EUV Images Using the Unsupervised Segmentation Method in the Bayesian Framework"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.04988","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":"sha256:68600f180ed17d4316ecc2830c4118f859739ed37b9b320bf146357fa674a037","target":"record","created_at":"2026-05-18T01:16:56Z","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":"8fd95b9f0cee2f6a941a8ceba1aa1bef0514366ffff7b94d6c9495a235a4524b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-18T05:14:58Z","title_canon_sha256":"5c8b0ae1cf1fef8378be011c988057c524af95b1e533e23262d52b463a140681"},"schema_version":"1.0","source":{"id":"1604.04988","kind":"arxiv","version":1}},"canonical_sha256":"2844d0269bf1f730b9f566a0ce2f85e8347a40ef80b3d9f54331e9d2798e49d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2844d0269bf1f730b9f566a0ce2f85e8347a40ef80b3d9f54331e9d2798e49d3","first_computed_at":"2026-05-18T01:16:56.126680Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:56.126680Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6XY0i+6bpYK9uKHaKcD6U+TZtSl/L1ZphW8ccirlV0mZ6vTKVYoNiZiHC/iAIFvfHPaH8qU8Vkbe0sW0fXKmCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:56.127258Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.04988","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68600f180ed17d4316ecc2830c4118f859739ed37b9b320bf146357fa674a037","sha256:d561609b4a2ad3b63d909be90a5e87db22f974f3fbf172a2055184ffe04e7e6c"],"state_sha256":"93c681701eb5815233f849b0e1d16f7b3bdb834cf54e9b63ee8ae7dfab6c8e8a"}