{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:3TNYKOCAJ6NDSHCDKVQZYZBHVG","short_pith_number":"pith:3TNYKOCA","schema_version":"1.0","canonical_sha256":"dcdb8538404f9a391c4355619c6427a99498d8edcb391d564fe8da8c9ecb571d","source":{"kind":"arxiv","id":"1905.09588","version":1},"attestation_state":"computed","paper":{"title":"Underwater Stereo using Refraction-free Image Synthesized from Light Field Camera","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Hiroshi Kawasaki, Kazuto Ichimaru","submitted_at":"2019-05-23T11:12:12Z","abstract_excerpt":"There is a strong demand on capturing underwater scenes without distortions caused by refraction. Since a light field camera can capture several light rays at each point of an image plane from various directions, if geometrically correct rays are chosen, it is possible to synthesize a refraction-free image. In this paper, we propose a novel technique to efficiently select such rays to synthesize a refraction-free image from an underwater image captured by a light field camera. In addition, we propose a stereo technique to reconstruct 3D shapes using a pair of our refraction-free images, which "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1905.09588","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-05-23T11:12:12Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"f8c1ea3340f76647425d9d468b331e52b6971d330e711537b91b2ed2834e6622","abstract_canon_sha256":"896963492c7b8a114119c8ee5270a25fb92c47db41185411cdbb2816745d33a5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:45:16.628262Z","signature_b64":"SCK+aGYVGMbilJw36tpT1DP2AZA+l5lx+sRki8p9/0zMT2NK+/PlRoMK16p2SpqyKwm6PrJu5hResYtrQLwbBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dcdb8538404f9a391c4355619c6427a99498d8edcb391d564fe8da8c9ecb571d","last_reissued_at":"2026-05-17T23:45:16.627696Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:45:16.627696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Underwater Stereo using Refraction-free Image Synthesized from Light Field Camera","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Hiroshi Kawasaki, Kazuto Ichimaru","submitted_at":"2019-05-23T11:12:12Z","abstract_excerpt":"There is a strong demand on capturing underwater scenes without distortions caused by refraction. Since a light field camera can capture several light rays at each point of an image plane from various directions, if geometrically correct rays are chosen, it is possible to synthesize a refraction-free image. In this paper, we propose a novel technique to efficiently select such rays to synthesize a refraction-free image from an underwater image captured by a light field camera. In addition, we propose a stereo technique to reconstruct 3D shapes using a pair of our refraction-free images, which "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.09588","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1905.09588","created_at":"2026-05-17T23:45:16.627780+00:00"},{"alias_kind":"arxiv_version","alias_value":"1905.09588v1","created_at":"2026-05-17T23:45:16.627780+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.09588","created_at":"2026-05-17T23:45:16.627780+00:00"},{"alias_kind":"pith_short_12","alias_value":"3TNYKOCAJ6ND","created_at":"2026-05-18T12:33:10.108867+00:00"},{"alias_kind":"pith_short_16","alias_value":"3TNYKOCAJ6NDSHCD","created_at":"2026-05-18T12:33:10.108867+00:00"},{"alias_kind":"pith_short_8","alias_value":"3TNYKOCA","created_at":"2026-05-18T12:33:10.108867+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/3TNYKOCAJ6NDSHCDKVQZYZBHVG","json":"https://pith.science/pith/3TNYKOCAJ6NDSHCDKVQZYZBHVG.json","graph_json":"https://pith.science/api/pith-number/3TNYKOCAJ6NDSHCDKVQZYZBHVG/graph.json","events_json":"https://pith.science/api/pith-number/3TNYKOCAJ6NDSHCDKVQZYZBHVG/events.json","paper":"https://pith.science/paper/3TNYKOCA"},"agent_actions":{"view_html":"https://pith.science/pith/3TNYKOCAJ6NDSHCDKVQZYZBHVG","download_json":"https://pith.science/pith/3TNYKOCAJ6NDSHCDKVQZYZBHVG.json","view_paper":"https://pith.science/paper/3TNYKOCA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1905.09588&json=true","fetch_graph":"https://pith.science/api/pith-number/3TNYKOCAJ6NDSHCDKVQZYZBHVG/graph.json","fetch_events":"https://pith.science/api/pith-number/3TNYKOCAJ6NDSHCDKVQZYZBHVG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3TNYKOCAJ6NDSHCDKVQZYZBHVG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3TNYKOCAJ6NDSHCDKVQZYZBHVG/action/storage_attestation","attest_author":"https://pith.science/pith/3TNYKOCAJ6NDSHCDKVQZYZBHVG/action/author_attestation","sign_citation":"https://pith.science/pith/3TNYKOCAJ6NDSHCDKVQZYZBHVG/action/citation_signature","submit_replication":"https://pith.science/pith/3TNYKOCAJ6NDSHCDKVQZYZBHVG/action/replication_record"}},"created_at":"2026-05-17T23:45:16.627780+00:00","updated_at":"2026-05-17T23:45:16.627780+00:00"}