{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:NKIYTIAZC6C3JCJ7VCZFJLB3R3","short_pith_number":"pith:NKIYTIAZ","canonical_record":{"source":{"id":"2304.05669","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-04-12T07:46:05Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"453942e716c5b01aeb5e16d5bb216630dd26d01ba4bdc6a93789210bb178906e","abstract_canon_sha256":"927aa498e16cda7fa8b3900430a439a12f001aad97761668196c1bd0321ce637"},"schema_version":"1.0"},"canonical_sha256":"6a9189a0191785b4893fa8b254ac3b8ee58895604585861c73a8a2df0c12e9b2","source":{"kind":"arxiv","id":"2304.05669","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.05669","created_at":"2026-07-05T06:44:07Z"},{"alias_kind":"arxiv_version","alias_value":"2304.05669v2","created_at":"2026-07-05T06:44:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.05669","created_at":"2026-07-05T06:44:07Z"},{"alias_kind":"pith_short_12","alias_value":"NKIYTIAZC6C3","created_at":"2026-07-05T06:44:07Z"},{"alias_kind":"pith_short_16","alias_value":"NKIYTIAZC6C3JCJ7","created_at":"2026-07-05T06:44:07Z"},{"alias_kind":"pith_short_8","alias_value":"NKIYTIAZ","created_at":"2026-07-05T06:44:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:NKIYTIAZC6C3JCJ7VCZFJLB3R3","target":"record","payload":{"canonical_record":{"source":{"id":"2304.05669","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-04-12T07:46:05Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"453942e716c5b01aeb5e16d5bb216630dd26d01ba4bdc6a93789210bb178906e","abstract_canon_sha256":"927aa498e16cda7fa8b3900430a439a12f001aad97761668196c1bd0321ce637"},"schema_version":"1.0"},"canonical_sha256":"6a9189a0191785b4893fa8b254ac3b8ee58895604585861c73a8a2df0c12e9b2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:44:07.187062Z","signature_b64":"GBpaYqHgxv29GfwIfZOX3XTC2Iz3VQ6/zOCkL94r618q7wE7Z8oI4pev4DMXrJdlVcEibW7RNBSzKpcnggoTAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a9189a0191785b4893fa8b254ac3b8ee58895604585861c73a8a2df0c12e9b2","last_reissued_at":"2026-07-05T06:44:07.186452Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:44:07.186452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2304.05669","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":"2026-07-05T06:44:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pSPLdYaUJb/vaN9bdTB28adOCXgmQkuIi8nqJa/Wa1ftgJjBo9f9ukGlxKTUboQRdtCZ5R/AUBuCTrzJMv6SCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T00:21:43.632464Z"},"content_sha256":"aaa1a0e5099a57c508d8cc323c26a057d31c929a46dc26f06ce1a0a64f481e6d","schema_version":"1.0","event_id":"sha256:aaa1a0e5099a57c508d8cc323c26a057d31c929a46dc26f06ce1a0a64f481e6d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:NKIYTIAZC6C3JCJ7VCZFJLB3R3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Factorized Inverse Path Tracing for Efficient and Accurate Material-Lighting Estimation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.GR"],"primary_cat":"cs.CV","authors_text":"Fatih Porikli, Hong Cai, Janarbek Matai, Liwen Wu, Manmohan Chandraker, Mustafa B. Yaldiz, Ravi Ramamoorthi, Rui Zhu, Tzu-Mao Li, Yinhao Zhu","submitted_at":"2023-04-12T07:46:05Z","abstract_excerpt":"Inverse path tracing has recently been applied to joint material and lighting estimation, given geometry and multi-view HDR observations of an indoor scene. However, it has two major limitations: path tracing is expensive to compute, and ambiguities exist between reflection and emission. Our Factorized Inverse Path Tracing (FIPT) addresses these challenges by using a factored light transport formulation and finds emitters driven by rendering errors. Our algorithm enables accurate material and lighting optimization faster than previous work, and is more effective at resolving ambiguities. The e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.05669","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/2304.05669/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":"2026-07-05T06:44:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OwrMw2OXkPZAoAzSwZXw9bq7vYg7j64TpGgirAcN8+F1b5cWA1aTsZJZzq10KLpQ06PBzZGgAsKX3kkdWgcXAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T00:21:43.632845Z"},"content_sha256":"dc92d726ae1a0ef5d9e69e61acbd6a7d689b41cc789af2beb6616a54ce243c3a","schema_version":"1.0","event_id":"sha256:dc92d726ae1a0ef5d9e69e61acbd6a7d689b41cc789af2beb6616a54ce243c3a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NKIYTIAZC6C3JCJ7VCZFJLB3R3/bundle.json","state_url":"https://pith.science/pith/NKIYTIAZC6C3JCJ7VCZFJLB3R3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NKIYTIAZC6C3JCJ7VCZFJLB3R3/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":"2026-07-15T00:21:43Z","links":{"resolver":"https://pith.science/pith/NKIYTIAZC6C3JCJ7VCZFJLB3R3","bundle":"https://pith.science/pith/NKIYTIAZC6C3JCJ7VCZFJLB3R3/bundle.json","state":"https://pith.science/pith/NKIYTIAZC6C3JCJ7VCZFJLB3R3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NKIYTIAZC6C3JCJ7VCZFJLB3R3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:NKIYTIAZC6C3JCJ7VCZFJLB3R3","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":"927aa498e16cda7fa8b3900430a439a12f001aad97761668196c1bd0321ce637","cross_cats_sorted":["cs.GR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-04-12T07:46:05Z","title_canon_sha256":"453942e716c5b01aeb5e16d5bb216630dd26d01ba4bdc6a93789210bb178906e"},"schema_version":"1.0","source":{"id":"2304.05669","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.05669","created_at":"2026-07-05T06:44:07Z"},{"alias_kind":"arxiv_version","alias_value":"2304.05669v2","created_at":"2026-07-05T06:44:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.05669","created_at":"2026-07-05T06:44:07Z"},{"alias_kind":"pith_short_12","alias_value":"NKIYTIAZC6C3","created_at":"2026-07-05T06:44:07Z"},{"alias_kind":"pith_short_16","alias_value":"NKIYTIAZC6C3JCJ7","created_at":"2026-07-05T06:44:07Z"},{"alias_kind":"pith_short_8","alias_value":"NKIYTIAZ","created_at":"2026-07-05T06:44:07Z"}],"graph_snapshots":[{"event_id":"sha256:dc92d726ae1a0ef5d9e69e61acbd6a7d689b41cc789af2beb6616a54ce243c3a","target":"graph","created_at":"2026-07-05T06:44:07Z","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/2304.05669/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Inverse path tracing has recently been applied to joint material and lighting estimation, given geometry and multi-view HDR observations of an indoor scene. However, it has two major limitations: path tracing is expensive to compute, and ambiguities exist between reflection and emission. Our Factorized Inverse Path Tracing (FIPT) addresses these challenges by using a factored light transport formulation and finds emitters driven by rendering errors. Our algorithm enables accurate material and lighting optimization faster than previous work, and is more effective at resolving ambiguities. The e","authors_text":"Fatih Porikli, Hong Cai, Janarbek Matai, Liwen Wu, Manmohan Chandraker, Mustafa B. Yaldiz, Ravi Ramamoorthi, Rui Zhu, Tzu-Mao Li, Yinhao Zhu","cross_cats":["cs.GR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-04-12T07:46:05Z","title":"Factorized Inverse Path Tracing for Efficient and Accurate Material-Lighting Estimation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.05669","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:aaa1a0e5099a57c508d8cc323c26a057d31c929a46dc26f06ce1a0a64f481e6d","target":"record","created_at":"2026-07-05T06:44:07Z","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":"927aa498e16cda7fa8b3900430a439a12f001aad97761668196c1bd0321ce637","cross_cats_sorted":["cs.GR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-04-12T07:46:05Z","title_canon_sha256":"453942e716c5b01aeb5e16d5bb216630dd26d01ba4bdc6a93789210bb178906e"},"schema_version":"1.0","source":{"id":"2304.05669","kind":"arxiv","version":2}},"canonical_sha256":"6a9189a0191785b4893fa8b254ac3b8ee58895604585861c73a8a2df0c12e9b2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6a9189a0191785b4893fa8b254ac3b8ee58895604585861c73a8a2df0c12e9b2","first_computed_at":"2026-07-05T06:44:07.186452Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:44:07.186452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GBpaYqHgxv29GfwIfZOX3XTC2Iz3VQ6/zOCkL94r618q7wE7Z8oI4pev4DMXrJdlVcEibW7RNBSzKpcnggoTAg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:44:07.187062Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.05669","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aaa1a0e5099a57c508d8cc323c26a057d31c929a46dc26f06ce1a0a64f481e6d","sha256:dc92d726ae1a0ef5d9e69e61acbd6a7d689b41cc789af2beb6616a54ce243c3a"],"state_sha256":"3721530d7f4be31b4fe0bffe56e75f0e4f3dd1956fdc152a0cf07a8d24fe723d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wamTcrSe7ZVR4GX8Dj+HZ5Sc8ZaPVy1wyI+SmfZwhsSZfzaqzUuQYB/ZvoX5V1iESn12DfCWbJLY/QTxJKboDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-15T00:21:43.635086Z","bundle_sha256":"5c0cbd5324f2b53a499f8e7f82f1de4dbb6c02272c10a4dc73f67e4cbbebb6dd"}}