{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:NYOFQCC5HQZMAERMKK6N3ETPJS","short_pith_number":"pith:NYOFQCC5","canonical_record":{"source":{"id":"2606.29461","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-06-28T15:32:40Z","cross_cats_sorted":[],"title_canon_sha256":"c944ce9bcff8736807924dd04c42bd4273bc290c818c3779b419f29bef77411b","abstract_canon_sha256":"703bf206aaa6933325c42cabd8af743678869396c97b484aeb67d57100df6169"},"schema_version":"1.0"},"canonical_sha256":"6e1c58085d3c32c0122c52bcdd926f4cbd696d3d7c4dc362d2a0d81493f9b9d1","source":{"kind":"arxiv","id":"2606.29461","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.29461","created_at":"2026-06-30T01:18:07Z"},{"alias_kind":"arxiv_version","alias_value":"2606.29461v1","created_at":"2026-06-30T01:18:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.29461","created_at":"2026-06-30T01:18:07Z"},{"alias_kind":"pith_short_12","alias_value":"NYOFQCC5HQZM","created_at":"2026-06-30T01:18:07Z"},{"alias_kind":"pith_short_16","alias_value":"NYOFQCC5HQZMAERM","created_at":"2026-06-30T01:18:07Z"},{"alias_kind":"pith_short_8","alias_value":"NYOFQCC5","created_at":"2026-06-30T01:18:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:NYOFQCC5HQZMAERMKK6N3ETPJS","target":"record","payload":{"canonical_record":{"source":{"id":"2606.29461","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-06-28T15:32:40Z","cross_cats_sorted":[],"title_canon_sha256":"c944ce9bcff8736807924dd04c42bd4273bc290c818c3779b419f29bef77411b","abstract_canon_sha256":"703bf206aaa6933325c42cabd8af743678869396c97b484aeb67d57100df6169"},"schema_version":"1.0"},"canonical_sha256":"6e1c58085d3c32c0122c52bcdd926f4cbd696d3d7c4dc362d2a0d81493f9b9d1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-30T01:18:07.371430Z","signature_b64":"ttgfNVuBxg9wvThCN640KR/WeAZ+op3diwRuOUhpMBBkvNJeFqdvsnyxxe0Sc7eJ6IQhYalTyz+G9A0hXlbeAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e1c58085d3c32c0122c52bcdd926f4cbd696d3d7c4dc362d2a0d81493f9b9d1","last_reissued_at":"2026-06-30T01:18:07.370894Z","signature_status":"signed_v1","first_computed_at":"2026-06-30T01:18:07.370894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.29461","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":"2026-06-30T01:18:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qFR25S1gYVhhy0sdTPStJovRrnVmbeFMUigPQp/czG7sYoozVrHWHJvCC6+LPM3mQetGKRwgGiUG73poduBWCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T14:55:34.621915Z"},"content_sha256":"d276e6b5d675d8a62f8aa13aa4f854d3c732341b6dbaac32f3a6b05e81ccdeca","schema_version":"1.0","event_id":"sha256:d276e6b5d675d8a62f8aa13aa4f854d3c732341b6dbaac32f3a6b05e81ccdeca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:NYOFQCC5HQZMAERMKK6N3ETPJS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"From Phase to Phenomenon: Self-Supervised Learning of Subsurface Scattering with Minimal Phase-shift Inputs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Andreas Engelhardt, Arjun Majumdar, Hendrik PA. Lensch, Raphael Braun","submitted_at":"2026-06-28T15:32:40Z","abstract_excerpt":"We propose a self-supervised pretraining framework for learning sub-surface scattering (SSS) light transport representations from minimal input. Our method leverages a stereo projector-camera setup that captures only eight high-frequency phase-shift profilometry (PSP) images per view to pretrain an encoder in a multi-view, multi-object setting. We introduce a tailored augmentation strategy for PSP-based SSS data, and show that it significantly outperforms standard ImageNet-style augmentations for SSL pretraining. The pretrained encoder learns generalizable SSS representations that transfer eff"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.29461","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/2606.29461/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":"2026-06-30T01:18:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ftZz5gc43zShH2tDBa890xc3949X12KD6qwfA6r4GIuNOvQ6T6MqtTWRaGRe+zkGel/yyDbQfQ4+q5b0v1AyDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T14:55:34.622282Z"},"content_sha256":"5c43b106ea55a3138b2ce0aea27b923c15cf7e993f27a97dda411d2c3f9e0158","schema_version":"1.0","event_id":"sha256:5c43b106ea55a3138b2ce0aea27b923c15cf7e993f27a97dda411d2c3f9e0158"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NYOFQCC5HQZMAERMKK6N3ETPJS/bundle.json","state_url":"https://pith.science/pith/NYOFQCC5HQZMAERMKK6N3ETPJS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NYOFQCC5HQZMAERMKK6N3ETPJS/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":"2026-06-30T14:55:34Z","links":{"resolver":"https://pith.science/pith/NYOFQCC5HQZMAERMKK6N3ETPJS","bundle":"https://pith.science/pith/NYOFQCC5HQZMAERMKK6N3ETPJS/bundle.json","state":"https://pith.science/pith/NYOFQCC5HQZMAERMKK6N3ETPJS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NYOFQCC5HQZMAERMKK6N3ETPJS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:NYOFQCC5HQZMAERMKK6N3ETPJS","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":"703bf206aaa6933325c42cabd8af743678869396c97b484aeb67d57100df6169","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-06-28T15:32:40Z","title_canon_sha256":"c944ce9bcff8736807924dd04c42bd4273bc290c818c3779b419f29bef77411b"},"schema_version":"1.0","source":{"id":"2606.29461","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.29461","created_at":"2026-06-30T01:18:07Z"},{"alias_kind":"arxiv_version","alias_value":"2606.29461v1","created_at":"2026-06-30T01:18:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.29461","created_at":"2026-06-30T01:18:07Z"},{"alias_kind":"pith_short_12","alias_value":"NYOFQCC5HQZM","created_at":"2026-06-30T01:18:07Z"},{"alias_kind":"pith_short_16","alias_value":"NYOFQCC5HQZMAERM","created_at":"2026-06-30T01:18:07Z"},{"alias_kind":"pith_short_8","alias_value":"NYOFQCC5","created_at":"2026-06-30T01:18:07Z"}],"graph_snapshots":[{"event_id":"sha256:5c43b106ea55a3138b2ce0aea27b923c15cf7e993f27a97dda411d2c3f9e0158","target":"graph","created_at":"2026-06-30T01:18:07Z","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/2606.29461/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose a self-supervised pretraining framework for learning sub-surface scattering (SSS) light transport representations from minimal input. Our method leverages a stereo projector-camera setup that captures only eight high-frequency phase-shift profilometry (PSP) images per view to pretrain an encoder in a multi-view, multi-object setting. We introduce a tailored augmentation strategy for PSP-based SSS data, and show that it significantly outperforms standard ImageNet-style augmentations for SSL pretraining. The pretrained encoder learns generalizable SSS representations that transfer eff","authors_text":"Andreas Engelhardt, Arjun Majumdar, Hendrik PA. Lensch, Raphael Braun","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-06-28T15:32:40Z","title":"From Phase to Phenomenon: Self-Supervised Learning of Subsurface Scattering with Minimal Phase-shift Inputs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.29461","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:d276e6b5d675d8a62f8aa13aa4f854d3c732341b6dbaac32f3a6b05e81ccdeca","target":"record","created_at":"2026-06-30T01:18:07Z","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":"703bf206aaa6933325c42cabd8af743678869396c97b484aeb67d57100df6169","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-06-28T15:32:40Z","title_canon_sha256":"c944ce9bcff8736807924dd04c42bd4273bc290c818c3779b419f29bef77411b"},"schema_version":"1.0","source":{"id":"2606.29461","kind":"arxiv","version":1}},"canonical_sha256":"6e1c58085d3c32c0122c52bcdd926f4cbd696d3d7c4dc362d2a0d81493f9b9d1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6e1c58085d3c32c0122c52bcdd926f4cbd696d3d7c4dc362d2a0d81493f9b9d1","first_computed_at":"2026-06-30T01:18:07.370894Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-30T01:18:07.370894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ttgfNVuBxg9wvThCN640KR/WeAZ+op3diwRuOUhpMBBkvNJeFqdvsnyxxe0Sc7eJ6IQhYalTyz+G9A0hXlbeAw==","signature_status":"signed_v1","signed_at":"2026-06-30T01:18:07.371430Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.29461","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d276e6b5d675d8a62f8aa13aa4f854d3c732341b6dbaac32f3a6b05e81ccdeca","sha256:5c43b106ea55a3138b2ce0aea27b923c15cf7e993f27a97dda411d2c3f9e0158"],"state_sha256":"21f26151d473407862fad238de86c119886015ad7578df75fdec0829a41dbea3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7wViqThzFunOjvLAbLB1KYlgDHoW0o5FujORtyI5iok33bHt76Rar+hwCKQqSMK6zV+7K7O7t+cfgybs2JEqDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T14:55:34.624268Z","bundle_sha256":"168711a87100759b144e07a13dd4766d7ead92172499ae8f57d29e60aa98e681"}}