{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:LGYCJLKPW4P4BD5OAWMAWAZVXJ","short_pith_number":"pith:LGYCJLKP","canonical_record":{"source":{"id":"2011.02468","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2020-11-04T18:38:27Z","cross_cats_sorted":["eess.IV","physics.app-ph"],"title_canon_sha256":"c3d30ed70885c6e33154e0784fe665caf9af0248e853aa11f6d3a17336e99b6f","abstract_canon_sha256":"b99d84c1e48c2e5383cd02227a37f0035e6ae88976bf43675b19e64d09dde99c"},"schema_version":"1.0"},"canonical_sha256":"59b024ad4fb71fc08fae05980b0335ba78c0fe17d0b5e4f0585974e1c2a0665d","source":{"kind":"arxiv","id":"2011.02468","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.02468","created_at":"2026-07-05T02:29:55Z"},{"alias_kind":"arxiv_version","alias_value":"2011.02468v2","created_at":"2026-07-05T02:29:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.02468","created_at":"2026-07-05T02:29:55Z"},{"alias_kind":"pith_short_12","alias_value":"LGYCJLKPW4P4","created_at":"2026-07-05T02:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"LGYCJLKPW4P4BD5O","created_at":"2026-07-05T02:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"LGYCJLKP","created_at":"2026-07-05T02:29:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:LGYCJLKPW4P4BD5OAWMAWAZVXJ","target":"record","payload":{"canonical_record":{"source":{"id":"2011.02468","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2020-11-04T18:38:27Z","cross_cats_sorted":["eess.IV","physics.app-ph"],"title_canon_sha256":"c3d30ed70885c6e33154e0784fe665caf9af0248e853aa11f6d3a17336e99b6f","abstract_canon_sha256":"b99d84c1e48c2e5383cd02227a37f0035e6ae88976bf43675b19e64d09dde99c"},"schema_version":"1.0"},"canonical_sha256":"59b024ad4fb71fc08fae05980b0335ba78c0fe17d0b5e4f0585974e1c2a0665d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:29:55.603475Z","signature_b64":"UM/ZTKS8sByAl3O953xjlRA5QXQo3zFwTzwxdEjMbNEMpbuMyE48XG8d/i3TwJqYOfvQcdmLhQwApWPc0FysBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"59b024ad4fb71fc08fae05980b0335ba78c0fe17d0b5e4f0585974e1c2a0665d","last_reissued_at":"2026-07-05T02:29:55.603036Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:29:55.603036Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.02468","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:29:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tg8VMjsKnbZ2T3xR1OyUp3CKzLZV+ImHU/PHOqO17rhFHUoLoQARi7jLwczO79qZ2J48ku9LcLbfJ5uRpXJQBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T03:00:10.146574Z"},"content_sha256":"59b8481f0b3021858c9fa2f737e8b69687e6be777837ad65b9b4b3e14edbd234","schema_version":"1.0","event_id":"sha256:59b8481f0b3021858c9fa2f737e8b69687e6be777837ad65b9b4b3e14edbd234"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:LGYCJLKPW4P4BD5OAWMAWAZVXJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Geometric Solution of Image Degradation by Diffraction in Lensless Sensing and Microscopy","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["eess.IV","physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Manjunatha Mahadevappa, Pranab Kumar Dutta, Sanjeev Kumar","submitted_at":"2020-11-04T18:38:27Z","abstract_excerpt":"This paper proposes a non-computational method of counteracting the effect of image degradation introduced by the diffraction phenomenon in lensless microscopy. All the optical images (whether focused by lenses or not) are diffraction patterns, which preserve the visual information upto a certain extent determined by the size of the point spread functions, like airy disks in some cases. A highly diverging beam can be exploited to reduce the spatial extent of these point spread functions relatively in the transformed projective space, which can help us in the spatial unmixing of the visual info"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.02468","kind":"arxiv","version":2},"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/2011.02468/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":"2026-07-05T02:29:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ao4pGpeXNeseX3Nfed5y6whMbRHM72FSQ44oGB3UZDrTe3seLE7xpvTQHQcuj075IJ/zXKp95zoYr8ZQGrEIDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T03:00:10.146902Z"},"content_sha256":"5c7d0aa04a5035f73b09039c6c9b05bb6879f50a529d6f3eca061d83ede47c58","schema_version":"1.0","event_id":"sha256:5c7d0aa04a5035f73b09039c6c9b05bb6879f50a529d6f3eca061d83ede47c58"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LGYCJLKPW4P4BD5OAWMAWAZVXJ/bundle.json","state_url":"https://pith.science/pith/LGYCJLKPW4P4BD5OAWMAWAZVXJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LGYCJLKPW4P4BD5OAWMAWAZVXJ/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":"2026-08-14T03:00:10Z","links":{"resolver":"https://pith.science/pith/LGYCJLKPW4P4BD5OAWMAWAZVXJ","bundle":"https://pith.science/pith/LGYCJLKPW4P4BD5OAWMAWAZVXJ/bundle.json","state":"https://pith.science/pith/LGYCJLKPW4P4BD5OAWMAWAZVXJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LGYCJLKPW4P4BD5OAWMAWAZVXJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:LGYCJLKPW4P4BD5OAWMAWAZVXJ","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":"b99d84c1e48c2e5383cd02227a37f0035e6ae88976bf43675b19e64d09dde99c","cross_cats_sorted":["eess.IV","physics.app-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2020-11-04T18:38:27Z","title_canon_sha256":"c3d30ed70885c6e33154e0784fe665caf9af0248e853aa11f6d3a17336e99b6f"},"schema_version":"1.0","source":{"id":"2011.02468","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.02468","created_at":"2026-07-05T02:29:55Z"},{"alias_kind":"arxiv_version","alias_value":"2011.02468v2","created_at":"2026-07-05T02:29:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.02468","created_at":"2026-07-05T02:29:55Z"},{"alias_kind":"pith_short_12","alias_value":"LGYCJLKPW4P4","created_at":"2026-07-05T02:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"LGYCJLKPW4P4BD5O","created_at":"2026-07-05T02:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"LGYCJLKP","created_at":"2026-07-05T02:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:5c7d0aa04a5035f73b09039c6c9b05bb6879f50a529d6f3eca061d83ede47c58","target":"graph","created_at":"2026-07-05T02:29:55Z","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/2011.02468/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper proposes a non-computational method of counteracting the effect of image degradation introduced by the diffraction phenomenon in lensless microscopy. All the optical images (whether focused by lenses or not) are diffraction patterns, which preserve the visual information upto a certain extent determined by the size of the point spread functions, like airy disks in some cases. A highly diverging beam can be exploited to reduce the spatial extent of these point spread functions relatively in the transformed projective space, which can help us in the spatial unmixing of the visual info","authors_text":"Manjunatha Mahadevappa, Pranab Kumar Dutta, Sanjeev Kumar","cross_cats":["eess.IV","physics.app-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2020-11-04T18:38:27Z","title":"Geometric Solution of Image Degradation by Diffraction in Lensless Sensing and Microscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.02468","kind":"arxiv","version":2},"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":"sha256:59b8481f0b3021858c9fa2f737e8b69687e6be777837ad65b9b4b3e14edbd234","target":"record","created_at":"2026-07-05T02:29:55Z","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":"b99d84c1e48c2e5383cd02227a37f0035e6ae88976bf43675b19e64d09dde99c","cross_cats_sorted":["eess.IV","physics.app-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2020-11-04T18:38:27Z","title_canon_sha256":"c3d30ed70885c6e33154e0784fe665caf9af0248e853aa11f6d3a17336e99b6f"},"schema_version":"1.0","source":{"id":"2011.02468","kind":"arxiv","version":2}},"canonical_sha256":"59b024ad4fb71fc08fae05980b0335ba78c0fe17d0b5e4f0585974e1c2a0665d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"59b024ad4fb71fc08fae05980b0335ba78c0fe17d0b5e4f0585974e1c2a0665d","first_computed_at":"2026-07-05T02:29:55.603036Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:29:55.603036Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UM/ZTKS8sByAl3O953xjlRA5QXQo3zFwTzwxdEjMbNEMpbuMyE48XG8d/i3TwJqYOfvQcdmLhQwApWPc0FysBg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:29:55.603475Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.02468","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:59b8481f0b3021858c9fa2f737e8b69687e6be777837ad65b9b4b3e14edbd234","sha256:5c7d0aa04a5035f73b09039c6c9b05bb6879f50a529d6f3eca061d83ede47c58"],"state_sha256":"acafcda73e3e23e336eb3908d14adf62017b8c4230f6a8c62a839a7865bdcb6f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+ucOyEvKUlQE4b8bZ/0y76k5X2AG8SWYTVDYw/jHmgnt7yB0Sgl3iIZ48LP1PEXeZNC3DUkxPZivXgFdfvGzDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T03:00:10.150889Z","bundle_sha256":"ede245dc0cda5aae2e0b3e291d191245d52583745274f77cecc3e30a234b3228"}}