{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:AKDJTEXYD4AL56PFR6NZYAU2I4","short_pith_number":"pith:AKDJTEXY","canonical_record":{"source":{"id":"2407.09511","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-06-17T11:49:20Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"0700285ae0338e18b3e3aae730c1da59e8edd8e31c3e16284148df26291fc2de","abstract_canon_sha256":"eac300b076c3ba6798b334aca5804c2cb97dcb256553b630022eb28da8b3ee37"},"schema_version":"1.0"},"canonical_sha256":"02869992f81f00bef9e58f9b9c029a472ae007864f6c6b1f8854273ec059bb5b","source":{"kind":"arxiv","id":"2407.09511","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.09511","created_at":"2026-07-05T08:43:31Z"},{"alias_kind":"arxiv_version","alias_value":"2407.09511v1","created_at":"2026-07-05T08:43:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.09511","created_at":"2026-07-05T08:43:31Z"},{"alias_kind":"pith_short_12","alias_value":"AKDJTEXYD4AL","created_at":"2026-07-05T08:43:31Z"},{"alias_kind":"pith_short_16","alias_value":"AKDJTEXYD4AL56PF","created_at":"2026-07-05T08:43:31Z"},{"alias_kind":"pith_short_8","alias_value":"AKDJTEXY","created_at":"2026-07-05T08:43:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:AKDJTEXYD4AL56PFR6NZYAU2I4","target":"record","payload":{"canonical_record":{"source":{"id":"2407.09511","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-06-17T11:49:20Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"0700285ae0338e18b3e3aae730c1da59e8edd8e31c3e16284148df26291fc2de","abstract_canon_sha256":"eac300b076c3ba6798b334aca5804c2cb97dcb256553b630022eb28da8b3ee37"},"schema_version":"1.0"},"canonical_sha256":"02869992f81f00bef9e58f9b9c029a472ae007864f6c6b1f8854273ec059bb5b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:43:31.318593Z","signature_b64":"sEOTaUV/rk7oinOHt/NoXEtAAPuCURIAQZSKefYecUKsthxySiBE2Jw722f/PU3fls0fYIIcTnyOpeCOCtRdCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"02869992f81f00bef9e58f9b9c029a472ae007864f6c6b1f8854273ec059bb5b","last_reissued_at":"2026-07-05T08:43:31.318198Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:43:31.318198Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2407.09511","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T08:43:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wL/ie9lLpYdaTVrtmUvoxJL02u78sRal1AiduK2HxBVUiAK946FH8FlnIH9DkQTcG4Kc3OjIUbJ5p6PqaJzCAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T21:38:13.903372Z"},"content_sha256":"7122eb6b7e137fda7834be09fafaaedee53d31b80d201f570603f1bb3789a55d","schema_version":"1.0","event_id":"sha256:7122eb6b7e137fda7834be09fafaaedee53d31b80d201f570603f1bb3789a55d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:AKDJTEXYD4AL56PFR6NZYAU2I4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Controlling the color appearance of objects by optimizing the illumination spectrum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.GR"],"primary_cat":"cs.CV","authors_text":"Mariko Yamaguchi, Masaru Tsuchida, Takahiro Matsumoto, Takayoshi Mochizuki, Tetsuro Tokunaga","submitted_at":"2024-06-17T11:49:20Z","abstract_excerpt":"We have developed an innovative lighting system that changes specific target colors while keeping the lights appearing naturally white. By precisely controlling the spectral power distribution (SPD) of illumination and harnessing the unique phenomenon of metamerism, our system achieves unique color variations in ways you've never seen before. Our system calculates the optimal SPDs of illumination for given materials to intensively induce metamerism, and then synthesizes the illumination using various colors of LEDs. We successfully demonstrated the system's implementation at Paris Fashion Week"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.09511","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2407.09511/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":"2026-07-05T08:43:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J8zyobEEi0Opt3K5UG/W6SUm0trK/A/MK/jdgYXXcvYJQiaFcxDEgkuq1eK6h1ihoyQAS+RWR5x28yo1fsMCBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T21:38:13.903998Z"},"content_sha256":"1eb21fbe9e665e90540fc2a760d6c4cee4cb38b3f46f467c6233b6ff082a9982","schema_version":"1.0","event_id":"sha256:1eb21fbe9e665e90540fc2a760d6c4cee4cb38b3f46f467c6233b6ff082a9982"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AKDJTEXYD4AL56PFR6NZYAU2I4/bundle.json","state_url":"https://pith.science/pith/AKDJTEXYD4AL56PFR6NZYAU2I4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AKDJTEXYD4AL56PFR6NZYAU2I4/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":"2026-08-18T21:38:13Z","links":{"resolver":"https://pith.science/pith/AKDJTEXYD4AL56PFR6NZYAU2I4","bundle":"https://pith.science/pith/AKDJTEXYD4AL56PFR6NZYAU2I4/bundle.json","state":"https://pith.science/pith/AKDJTEXYD4AL56PFR6NZYAU2I4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AKDJTEXYD4AL56PFR6NZYAU2I4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:AKDJTEXYD4AL56PFR6NZYAU2I4","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":"eac300b076c3ba6798b334aca5804c2cb97dcb256553b630022eb28da8b3ee37","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-06-17T11:49:20Z","title_canon_sha256":"0700285ae0338e18b3e3aae730c1da59e8edd8e31c3e16284148df26291fc2de"},"schema_version":"1.0","source":{"id":"2407.09511","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.09511","created_at":"2026-07-05T08:43:31Z"},{"alias_kind":"arxiv_version","alias_value":"2407.09511v1","created_at":"2026-07-05T08:43:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.09511","created_at":"2026-07-05T08:43:31Z"},{"alias_kind":"pith_short_12","alias_value":"AKDJTEXYD4AL","created_at":"2026-07-05T08:43:31Z"},{"alias_kind":"pith_short_16","alias_value":"AKDJTEXYD4AL56PF","created_at":"2026-07-05T08:43:31Z"},{"alias_kind":"pith_short_8","alias_value":"AKDJTEXY","created_at":"2026-07-05T08:43:31Z"}],"graph_snapshots":[{"event_id":"sha256:1eb21fbe9e665e90540fc2a760d6c4cee4cb38b3f46f467c6233b6ff082a9982","target":"graph","created_at":"2026-07-05T08:43:31Z","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/2407.09511/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We have developed an innovative lighting system that changes specific target colors while keeping the lights appearing naturally white. By precisely controlling the spectral power distribution (SPD) of illumination and harnessing the unique phenomenon of metamerism, our system achieves unique color variations in ways you've never seen before. Our system calculates the optimal SPDs of illumination for given materials to intensively induce metamerism, and then synthesizes the illumination using various colors of LEDs. We successfully demonstrated the system's implementation at Paris Fashion Week","authors_text":"Mariko Yamaguchi, Masaru Tsuchida, Takahiro Matsumoto, Takayoshi Mochizuki, Tetsuro Tokunaga","cross_cats":["cs.GR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-06-17T11:49:20Z","title":"Controlling the color appearance of objects by optimizing the illumination spectrum"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.09511","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":"sha256:7122eb6b7e137fda7834be09fafaaedee53d31b80d201f570603f1bb3789a55d","target":"record","created_at":"2026-07-05T08:43:31Z","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":"eac300b076c3ba6798b334aca5804c2cb97dcb256553b630022eb28da8b3ee37","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-06-17T11:49:20Z","title_canon_sha256":"0700285ae0338e18b3e3aae730c1da59e8edd8e31c3e16284148df26291fc2de"},"schema_version":"1.0","source":{"id":"2407.09511","kind":"arxiv","version":1}},"canonical_sha256":"02869992f81f00bef9e58f9b9c029a472ae007864f6c6b1f8854273ec059bb5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"02869992f81f00bef9e58f9b9c029a472ae007864f6c6b1f8854273ec059bb5b","first_computed_at":"2026-07-05T08:43:31.318198Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:43:31.318198Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sEOTaUV/rk7oinOHt/NoXEtAAPuCURIAQZSKefYecUKsthxySiBE2Jw722f/PU3fls0fYIIcTnyOpeCOCtRdCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T08:43:31.318593Z","signed_message":"canonical_sha256_bytes"},"source_id":"2407.09511","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7122eb6b7e137fda7834be09fafaaedee53d31b80d201f570603f1bb3789a55d","sha256:1eb21fbe9e665e90540fc2a760d6c4cee4cb38b3f46f467c6233b6ff082a9982"],"state_sha256":"8ab9863ce69eeba9b51d797264b40fb417768d08f88371bfd795c5771c3bdf18"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bTUS30qUiiJvMtbtrJ+O+GlAx6p8EKUOb9U9m4kn4wmPnZFLVrEbzA3Jq77qrQ96jl8xTggrVHCQH0TlhAohCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T21:38:13.909406Z","bundle_sha256":"65fb0a6a1e74a4a739f918b604e508e72e7128c7fc0c6a5e84223117b15f3ee8"}}