{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:HLWVTP4QGTH26TQIF5RH667WLO","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":"df186a0d6d1fe86dbc1578febe0fe355b49639161e4f7b819cb1810cab5606b0","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-08-26T07:51:43Z","title_canon_sha256":"c370b10e1546db871f83d630a738ee5b9b2f8a86c7c0634be305b7618411efb7"},"schema_version":"1.0","source":{"id":"1809.00962","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.00962","created_at":"2026-05-18T00:01:57Z"},{"alias_kind":"arxiv_version","alias_value":"1809.00962v3","created_at":"2026-05-18T00:01:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.00962","created_at":"2026-05-18T00:01:57Z"},{"alias_kind":"pith_short_12","alias_value":"HLWVTP4QGTH2","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HLWVTP4QGTH26TQI","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HLWVTP4Q","created_at":"2026-05-18T12:32:28Z"}],"graph_snapshots":[{"event_id":"sha256:2a965d4b381ec68881e24c4c86df852447a4993ddeb2f2e74694844e22111844","target":"graph","created_at":"2026-05-18T00:01:57Z","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":"Blind ptychography is the scanning version of coherent diffractive imaging which seeks to recover both the object and the probe simultaneously. Based on alternating minimization by Douglas-Rachford splitting, AMDRS is a blind ptychographic algorithm informed by the uniqueness theory, the Poisson noise model and the stability analysis. Enhanced by the initialization method and the use of a randomly phased mask, AMDRS converges globally and geometrically. Three boundary conditions are considered in the simulations: periodic, dark-field and bright-field boundary conditions. The dark-field boundar","authors_text":"A. Fannjiang, Z. Zhang","cross_cats":["eess.IV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-08-26T07:51:43Z","title":"Blind Ptychography by Douglas-Rachford Splitting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.00962","kind":"arxiv","version":3},"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":"sha256:11a5e9178e344199f587d8f41d135e96b93b352fa9b88d286de0e1085cdf4822","target":"record","created_at":"2026-05-18T00:01:57Z","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":"df186a0d6d1fe86dbc1578febe0fe355b49639161e4f7b819cb1810cab5606b0","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-08-26T07:51:43Z","title_canon_sha256":"c370b10e1546db871f83d630a738ee5b9b2f8a86c7c0634be305b7618411efb7"},"schema_version":"1.0","source":{"id":"1809.00962","kind":"arxiv","version":3}},"canonical_sha256":"3aed59bf9034cfaf4e082f627f7bf65b8bfeb05b9638ddb4c452550e9e21ffc3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3aed59bf9034cfaf4e082f627f7bf65b8bfeb05b9638ddb4c452550e9e21ffc3","first_computed_at":"2026-05-18T00:01:57.922667Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:57.922667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hAvTAibgEHAY2ruZajR80XpqcatWcyLdCsjKuMpHM17Dhq/EVfg9UOdk9PfkypQUUlhMSKSISxM3mZz4FCQaBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:57.923277Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.00962","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:11a5e9178e344199f587d8f41d135e96b93b352fa9b88d286de0e1085cdf4822","sha256:2a965d4b381ec68881e24c4c86df852447a4993ddeb2f2e74694844e22111844"],"state_sha256":"8bd4b1a146afbcee62080c8f0e02ae0fad04cf1e9f717608f0ee5c1a80ea3ffe"}