{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:SI77ITPIJG5DTI7IDZYUHDM5RN","short_pith_number":"pith:SI77ITPI","canonical_record":{"source":{"id":"1804.02836","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-04-09T06:25:20Z","cross_cats_sorted":[],"title_canon_sha256":"3852bbbd5659bd032a79fa10842dc9433dc5b4e2ab2fc5443a526675a484d2c1","abstract_canon_sha256":"ae8964b9f268a003a3f0d95ec56c5ad80c39800279b71cad3356a36054ea78d6"},"schema_version":"1.0"},"canonical_sha256":"923ff44de849ba39a3e81e71438d9d8b406ece6a9e00df7192605a683ffa0a4e","source":{"kind":"arxiv","id":"1804.02836","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.02836","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"arxiv_version","alias_value":"1804.02836v2","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.02836","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"pith_short_12","alias_value":"SI77ITPIJG5D","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SI77ITPIJG5DTI7I","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SI77ITPI","created_at":"2026-05-18T12:32:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:SI77ITPIJG5DTI7IDZYUHDM5RN","target":"record","payload":{"canonical_record":{"source":{"id":"1804.02836","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-04-09T06:25:20Z","cross_cats_sorted":[],"title_canon_sha256":"3852bbbd5659bd032a79fa10842dc9433dc5b4e2ab2fc5443a526675a484d2c1","abstract_canon_sha256":"ae8964b9f268a003a3f0d95ec56c5ad80c39800279b71cad3356a36054ea78d6"},"schema_version":"1.0"},"canonical_sha256":"923ff44de849ba39a3e81e71438d9d8b406ece6a9e00df7192605a683ffa0a4e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:56.846571Z","signature_b64":"Fqo9A1GYd4H+jY831UFCz7wZo6I8ntQeVnDPbMkySgXN4rFzK9jnvu4fWwYPEvH8fWPMRl1MUv7RZqvDVht2DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"923ff44de849ba39a3e81e71438d9d8b406ece6a9e00df7192605a683ffa0a4e","last_reissued_at":"2026-05-18T00:18:56.846180Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:56.846180Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.02836","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":"2026-05-18T00:18:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C7JlEdNQX0mW6Q+NFzsbt95QWE51H5lzrfxp2HzT46PA29tptCPwoBdJOAjQQ4c/ccyUOuGt1R9J/FnZSvSnBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:16:13.572149Z"},"content_sha256":"608310e1bafe655c6236f017df84184afa280a45ecc06182e148204deb92e004","schema_version":"1.0","event_id":"sha256:608310e1bafe655c6236f017df84184afa280a45ecc06182e148204deb92e004"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:SI77ITPIJG5DTI7IDZYUHDM5RN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photometric Stereo in Participating Media Considering Shape-Dependent Forward Scatter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Atsushi Hashimoto, Masaaki Iiyama, Michihiko Minoh, Yuki Fujimura","submitted_at":"2018-04-09T06:25:20Z","abstract_excerpt":"Images captured in participating media such as murky water, fog, or smoke are degraded by scattered light. Thus, the use of traditional three-dimensional (3D) reconstruction techniques in such environments is difficult. In this paper, we propose a photometric stereo method for participating media. The proposed method differs from previous studies with respect to modeling shape-dependent forward scatter. In the proposed model, forward scatter is described as an analytical form using lookup tables and is represented by spatially-variant kernels. We also propose an approximation of a large-scale "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.02836","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":""},"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":"2026-05-18T00:18:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hyxbJ2loztQkwc626sB/HLLmFlE/SzR7X+QKiQaNrAx+yMtnGWXulTUahryR1y8fhkbCyBnmDV9q3hUH3vS9Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:16:13.572575Z"},"content_sha256":"bd8be913d5d68bc4784b9530f535a019baca0bde664fc9fdcf6837147efe5c09","schema_version":"1.0","event_id":"sha256:bd8be913d5d68bc4784b9530f535a019baca0bde664fc9fdcf6837147efe5c09"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SI77ITPIJG5DTI7IDZYUHDM5RN/bundle.json","state_url":"https://pith.science/pith/SI77ITPIJG5DTI7IDZYUHDM5RN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SI77ITPIJG5DTI7IDZYUHDM5RN/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":"2026-05-30T13:16:13Z","links":{"resolver":"https://pith.science/pith/SI77ITPIJG5DTI7IDZYUHDM5RN","bundle":"https://pith.science/pith/SI77ITPIJG5DTI7IDZYUHDM5RN/bundle.json","state":"https://pith.science/pith/SI77ITPIJG5DTI7IDZYUHDM5RN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SI77ITPIJG5DTI7IDZYUHDM5RN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SI77ITPIJG5DTI7IDZYUHDM5RN","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":"ae8964b9f268a003a3f0d95ec56c5ad80c39800279b71cad3356a36054ea78d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-04-09T06:25:20Z","title_canon_sha256":"3852bbbd5659bd032a79fa10842dc9433dc5b4e2ab2fc5443a526675a484d2c1"},"schema_version":"1.0","source":{"id":"1804.02836","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.02836","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"arxiv_version","alias_value":"1804.02836v2","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.02836","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"pith_short_12","alias_value":"SI77ITPIJG5D","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SI77ITPIJG5DTI7I","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SI77ITPI","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:bd8be913d5d68bc4784b9530f535a019baca0bde664fc9fdcf6837147efe5c09","target":"graph","created_at":"2026-05-18T00:18:56Z","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":"Images captured in participating media such as murky water, fog, or smoke are degraded by scattered light. Thus, the use of traditional three-dimensional (3D) reconstruction techniques in such environments is difficult. In this paper, we propose a photometric stereo method for participating media. The proposed method differs from previous studies with respect to modeling shape-dependent forward scatter. In the proposed model, forward scatter is described as an analytical form using lookup tables and is represented by spatially-variant kernels. We also propose an approximation of a large-scale ","authors_text":"Atsushi Hashimoto, Masaaki Iiyama, Michihiko Minoh, Yuki Fujimura","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-04-09T06:25:20Z","title":"Photometric Stereo in Participating Media Considering Shape-Dependent Forward Scatter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.02836","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":"sha256:608310e1bafe655c6236f017df84184afa280a45ecc06182e148204deb92e004","target":"record","created_at":"2026-05-18T00:18:56Z","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":"ae8964b9f268a003a3f0d95ec56c5ad80c39800279b71cad3356a36054ea78d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-04-09T06:25:20Z","title_canon_sha256":"3852bbbd5659bd032a79fa10842dc9433dc5b4e2ab2fc5443a526675a484d2c1"},"schema_version":"1.0","source":{"id":"1804.02836","kind":"arxiv","version":2}},"canonical_sha256":"923ff44de849ba39a3e81e71438d9d8b406ece6a9e00df7192605a683ffa0a4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"923ff44de849ba39a3e81e71438d9d8b406ece6a9e00df7192605a683ffa0a4e","first_computed_at":"2026-05-18T00:18:56.846180Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:56.846180Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Fqo9A1GYd4H+jY831UFCz7wZo6I8ntQeVnDPbMkySgXN4rFzK9jnvu4fWwYPEvH8fWPMRl1MUv7RZqvDVht2DA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:56.846571Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.02836","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:608310e1bafe655c6236f017df84184afa280a45ecc06182e148204deb92e004","sha256:bd8be913d5d68bc4784b9530f535a019baca0bde664fc9fdcf6837147efe5c09"],"state_sha256":"894a5a20b54614dde23a74d9f9d45d70fec8363a2f4f165e89a4fb07399d8230"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z/imxfKuLnRI8tBDKam7M+0OaYH2+A8LO9cttDTxPVN4407cSdpe2X4ZSYSx71h9iun0+qitJo74klTBharFCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T13:16:13.575606Z","bundle_sha256":"772f29a16be5ccb417f3946ff8d87a8f059f49606ec42df1563b668afeb2dbe5"}}