{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GFCWEN5IO7DAXUNUHLCRCQB7O6","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":"e4742919f898455728d720d2a8a5aaa7035330049b9183c51bf15102ce498be1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-05-09T15:42:44Z","title_canon_sha256":"95329c95995a7a83626e51aa999a11bd190337ec69b77c3242fea9fa7b54f092"},"schema_version":"1.0","source":{"id":"1805.03593","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.03593","created_at":"2026-05-18T00:16:19Z"},{"alias_kind":"arxiv_version","alias_value":"1805.03593v1","created_at":"2026-05-18T00:16:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.03593","created_at":"2026-05-18T00:16:19Z"},{"alias_kind":"pith_short_12","alias_value":"GFCWEN5IO7DA","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GFCWEN5IO7DAXUNU","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GFCWEN5I","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:6537e31f52716af396dea91eeebdb0783759d425c55da7ee96fa927a6b336b9f","target":"graph","created_at":"2026-05-18T00:16:19Z","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":"Fourier Ptychography is a recently proposed imaging technique that yields high-resolution images by computationally transcending the diffraction blur of an optical system. At the crux of this method is the phase retrieval algorithm, which is used for computationally stitching together low-resolution images taken under varying illumination angles of a coherent light source. However, the traditional iterative phase retrieval technique relies heavily on the initialization and also need a good amount of overlap in the Fourier domain for the successively captured low-resolution images, thus increas","authors_text":"Honey Gupta, Kaushik Mitra, Lokesh Boominathan, Mayug Maniparambil, Rahul Baburajan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-05-09T15:42:44Z","title":"Phase retrieval for Fourier Ptychography under varying amount of measurements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.03593","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":"sha256:3903ad2bf4551481d90da2bda49795c9bb1d6013c572a196432fca4b92185dec","target":"record","created_at":"2026-05-18T00:16:19Z","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":"e4742919f898455728d720d2a8a5aaa7035330049b9183c51bf15102ce498be1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-05-09T15:42:44Z","title_canon_sha256":"95329c95995a7a83626e51aa999a11bd190337ec69b77c3242fea9fa7b54f092"},"schema_version":"1.0","source":{"id":"1805.03593","kind":"arxiv","version":1}},"canonical_sha256":"31456237a877c60bd1b43ac511403f7795bd99195666b010e95613b47c8db547","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31456237a877c60bd1b43ac511403f7795bd99195666b010e95613b47c8db547","first_computed_at":"2026-05-18T00:16:19.771478Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:19.771478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fXWOFF8ILbYg9+sCrNaaC1DxiJpK+7grICr/tnqMo7P2847Ywz95iwOHn9kQYoIRyJYsy+lDTbNjlzxygglKDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:19.772043Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.03593","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3903ad2bf4551481d90da2bda49795c9bb1d6013c572a196432fca4b92185dec","sha256:6537e31f52716af396dea91eeebdb0783759d425c55da7ee96fa927a6b336b9f"],"state_sha256":"ff0dcfabd3e40a6b94d88c5035d2614c029e5f6cbb3c8a64b058f259a00b7578"}