{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:Q27UXOBWTPNMMP36KLKZORWQZD","short_pith_number":"pith:Q27UXOBW","canonical_record":{"source":{"id":"1903.07987","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-03-16T18:07:43Z","cross_cats_sorted":["eess.SP","physics.optics"],"title_canon_sha256":"ba95945725c1433d56c40addb19619743994918ae7d218df45df119dc77b4d59","abstract_canon_sha256":"ae0e78be1b264c56932b416e8fe3673bc59b13da4afe646649f7b3afa905f8eb"},"schema_version":"1.0"},"canonical_sha256":"86bf4bb8369bdac63f7e52d59746d0c8fb074cc9aaca5d98029c7c87d124ed14","source":{"kind":"arxiv","id":"1903.07987","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.07987","created_at":"2026-07-05T00:06:06Z"},{"alias_kind":"arxiv_version","alias_value":"1903.07987v3","created_at":"2026-07-05T00:06:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.07987","created_at":"2026-07-05T00:06:06Z"},{"alias_kind":"pith_short_12","alias_value":"Q27UXOBWTPNM","created_at":"2026-07-05T00:06:06Z"},{"alias_kind":"pith_short_16","alias_value":"Q27UXOBWTPNMMP36","created_at":"2026-07-05T00:06:06Z"},{"alias_kind":"pith_short_8","alias_value":"Q27UXOBW","created_at":"2026-07-05T00:06:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:Q27UXOBWTPNMMP36KLKZORWQZD","target":"record","payload":{"canonical_record":{"source":{"id":"1903.07987","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-03-16T18:07:43Z","cross_cats_sorted":["eess.SP","physics.optics"],"title_canon_sha256":"ba95945725c1433d56c40addb19619743994918ae7d218df45df119dc77b4d59","abstract_canon_sha256":"ae0e78be1b264c56932b416e8fe3673bc59b13da4afe646649f7b3afa905f8eb"},"schema_version":"1.0"},"canonical_sha256":"86bf4bb8369bdac63f7e52d59746d0c8fb074cc9aaca5d98029c7c87d124ed14","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:06:06.793365Z","signature_b64":"3y9mvnPmHpPFHSh4tAB2kYvCTWsWy2RQnD/L92vwWhYe0uoWynPF0YuV7xVQprV2qQYRhDUHGcA6/i8MW5OmBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"86bf4bb8369bdac63f7e52d59746d0c8fb074cc9aaca5d98029c7c87d124ed14","last_reissued_at":"2026-07-05T00:06:06.792855Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:06:06.792855Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.07987","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:06:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yCHTdet9pUQoSC8VrW7Zj51H2mAeqUFMCku4D+wbfJXrpSe7usOLxnZsX6WpJzGfWgg4tuGuOF3htghoJiQ5DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T08:33:13.061652Z"},"content_sha256":"97f567ebcd577e21ccffd49e8a37a003facf05ee1f00194314b6dbd85410131b","schema_version":"1.0","event_id":"sha256:97f567ebcd577e21ccffd49e8a37a003facf05ee1f00194314b6dbd85410131b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:Q27UXOBWTPNMMP36KLKZORWQZD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Compressive Spectral Imaging with Diffractive Lenses","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.SP","physics.optics"],"primary_cat":"eess.IV","authors_text":"Figen S. Oktem, O\\u{g}uzhan Fatih Kar","submitted_at":"2019-03-16T18:07:43Z","abstract_excerpt":"Compressive spectral imaging enables to reconstruct the entire three-dimensional (3D) spectral cube from a few multiplexed images. Here, we develop a novel compressive spectral imaging technique using diffractive lenses. Our technique uses a coded aperture to spatially modulate the optical field from the scene and a diffractive lens such as a photon-sieve for dispersion. The coded field is passed through the diffractive lens and then measured at a few planes using a monochrome detector. The 3D spectral cube is then reconstructed from these highly compressed measurements through sparse recovery"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.07987","kind":"arxiv","version":3},"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/1903.07987/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":"2026-07-05T00:06:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v1LzU+Hc1UqBcfyIeyPRkpZZ+WqiZIj2DybPQy7iq/feMxHgu8UZFKVs/FjEzBovfGX3O1sUTNAPCM1reAvdCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T08:33:13.062026Z"},"content_sha256":"dc747a9d7e715a5bbc8c9c635a254483552e656a23bba1497c2de523c1bf645c","schema_version":"1.0","event_id":"sha256:dc747a9d7e715a5bbc8c9c635a254483552e656a23bba1497c2de523c1bf645c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q27UXOBWTPNMMP36KLKZORWQZD/bundle.json","state_url":"https://pith.science/pith/Q27UXOBWTPNMMP36KLKZORWQZD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q27UXOBWTPNMMP36KLKZORWQZD/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":"2026-07-17T08:33:13Z","links":{"resolver":"https://pith.science/pith/Q27UXOBWTPNMMP36KLKZORWQZD","bundle":"https://pith.science/pith/Q27UXOBWTPNMMP36KLKZORWQZD/bundle.json","state":"https://pith.science/pith/Q27UXOBWTPNMMP36KLKZORWQZD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q27UXOBWTPNMMP36KLKZORWQZD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:Q27UXOBWTPNMMP36KLKZORWQZD","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":"ae0e78be1b264c56932b416e8fe3673bc59b13da4afe646649f7b3afa905f8eb","cross_cats_sorted":["eess.SP","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-03-16T18:07:43Z","title_canon_sha256":"ba95945725c1433d56c40addb19619743994918ae7d218df45df119dc77b4d59"},"schema_version":"1.0","source":{"id":"1903.07987","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.07987","created_at":"2026-07-05T00:06:06Z"},{"alias_kind":"arxiv_version","alias_value":"1903.07987v3","created_at":"2026-07-05T00:06:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.07987","created_at":"2026-07-05T00:06:06Z"},{"alias_kind":"pith_short_12","alias_value":"Q27UXOBWTPNM","created_at":"2026-07-05T00:06:06Z"},{"alias_kind":"pith_short_16","alias_value":"Q27UXOBWTPNMMP36","created_at":"2026-07-05T00:06:06Z"},{"alias_kind":"pith_short_8","alias_value":"Q27UXOBW","created_at":"2026-07-05T00:06:06Z"}],"graph_snapshots":[{"event_id":"sha256:dc747a9d7e715a5bbc8c9c635a254483552e656a23bba1497c2de523c1bf645c","target":"graph","created_at":"2026-07-05T00:06:06Z","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/1903.07987/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Compressive spectral imaging enables to reconstruct the entire three-dimensional (3D) spectral cube from a few multiplexed images. Here, we develop a novel compressive spectral imaging technique using diffractive lenses. Our technique uses a coded aperture to spatially modulate the optical field from the scene and a diffractive lens such as a photon-sieve for dispersion. The coded field is passed through the diffractive lens and then measured at a few planes using a monochrome detector. The 3D spectral cube is then reconstructed from these highly compressed measurements through sparse recovery","authors_text":"Figen S. Oktem, O\\u{g}uzhan Fatih Kar","cross_cats":["eess.SP","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-03-16T18:07:43Z","title":"Compressive Spectral Imaging with Diffractive Lenses"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.07987","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":"sha256:97f567ebcd577e21ccffd49e8a37a003facf05ee1f00194314b6dbd85410131b","target":"record","created_at":"2026-07-05T00:06:06Z","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":"ae0e78be1b264c56932b416e8fe3673bc59b13da4afe646649f7b3afa905f8eb","cross_cats_sorted":["eess.SP","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-03-16T18:07:43Z","title_canon_sha256":"ba95945725c1433d56c40addb19619743994918ae7d218df45df119dc77b4d59"},"schema_version":"1.0","source":{"id":"1903.07987","kind":"arxiv","version":3}},"canonical_sha256":"86bf4bb8369bdac63f7e52d59746d0c8fb074cc9aaca5d98029c7c87d124ed14","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"86bf4bb8369bdac63f7e52d59746d0c8fb074cc9aaca5d98029c7c87d124ed14","first_computed_at":"2026-07-05T00:06:06.792855Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:06:06.792855Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3y9mvnPmHpPFHSh4tAB2kYvCTWsWy2RQnD/L92vwWhYe0uoWynPF0YuV7xVQprV2qQYRhDUHGcA6/i8MW5OmBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:06:06.793365Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.07987","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:97f567ebcd577e21ccffd49e8a37a003facf05ee1f00194314b6dbd85410131b","sha256:dc747a9d7e715a5bbc8c9c635a254483552e656a23bba1497c2de523c1bf645c"],"state_sha256":"ee83c898d958da94ebaa008d73b724034ebae25ee837efdd457f5b42e6ac0ebe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m5WrcARl+cZITUi0aqiVB9ebbslxRjQjqcpdshdPlBKDugzyjeaBa1jhIlJRRyf6ImakOHhcLtKNQBOTtHD6Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-17T08:33:13.064502Z","bundle_sha256":"817922146f3552a6512cef70b128fa0e8226c8057f5b8b00b9a3bc9eb7d17d1a"}}