{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:I7JWEX4RBDJP25P7FMRAGDQEXG","short_pith_number":"pith:I7JWEX4R","canonical_record":{"source":{"id":"2605.23174","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2026-05-22T02:46:11Z","cross_cats_sorted":[],"title_canon_sha256":"13bfca923657bec055e1c6ac76c28a933b6b138d82712a54a4927ef207607a2f","abstract_canon_sha256":"38660c55b5e5206448c8be28b78a843c152eb51c2ecb3b73085c558f26f1dba2"},"schema_version":"1.0"},"canonical_sha256":"47d3625f9108d2fd75ff2b22030e04b9967b4c67891f4abb5c0769a1738ca845","source":{"kind":"arxiv","id":"2605.23174","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.23174","created_at":"2026-05-25T02:01:41Z"},{"alias_kind":"arxiv_version","alias_value":"2605.23174v1","created_at":"2026-05-25T02:01:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23174","created_at":"2026-05-25T02:01:41Z"},{"alias_kind":"pith_short_12","alias_value":"I7JWEX4RBDJP","created_at":"2026-05-25T02:01:41Z"},{"alias_kind":"pith_short_16","alias_value":"I7JWEX4RBDJP25P7","created_at":"2026-05-25T02:01:41Z"},{"alias_kind":"pith_short_8","alias_value":"I7JWEX4R","created_at":"2026-05-25T02:01:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:I7JWEX4RBDJP25P7FMRAGDQEXG","target":"record","payload":{"canonical_record":{"source":{"id":"2605.23174","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2026-05-22T02:46:11Z","cross_cats_sorted":[],"title_canon_sha256":"13bfca923657bec055e1c6ac76c28a933b6b138d82712a54a4927ef207607a2f","abstract_canon_sha256":"38660c55b5e5206448c8be28b78a843c152eb51c2ecb3b73085c558f26f1dba2"},"schema_version":"1.0"},"canonical_sha256":"47d3625f9108d2fd75ff2b22030e04b9967b4c67891f4abb5c0769a1738ca845","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-25T02:01:41.495728Z","signature_b64":"vYoX6Xgyz/lSu5kEEGMHKbVI+hKsKsO6wYMGbe2Q9oltisFfOb23Ox0Q/vAX3ELe1GtTIlgfoh8VCFL1EWQmDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"47d3625f9108d2fd75ff2b22030e04b9967b4c67891f4abb5c0769a1738ca845","last_reissued_at":"2026-05-25T02:01:41.495069Z","signature_status":"signed_v1","first_computed_at":"2026-05-25T02:01:41.495069Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.23174","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":"2026-05-25T02:01:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5Ykw2G70uSpRpMRAQ8vLxylvvQk7fdNuYjpPiTGOJjoS1GZxdBX1UPqZInOrvwyRegvGRguTAjD836vLNIF+Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T06:11:51.282366Z"},"content_sha256":"c2ef17c89706b9a1d13002313e6fc85e728e4e3ce130f45adea4b449c894973e","schema_version":"1.0","event_id":"sha256:c2ef17c89706b9a1d13002313e6fc85e728e4e3ce130f45adea4b449c894973e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:I7JWEX4RBDJP25P7FMRAGDQEXG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"LQ-rPPG: A Label-Quantized Coarse-to-Fine Learning Framework for Remote Physiological Measurement","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Changki Sung, Hyun Myung, Jun Seong Lee, Samyeul Noh","submitted_at":"2026-05-22T02:46:11Z","abstract_excerpt":"Remote photoplethysmography (rPPG) enables non-contact measurement of physiological signals from facial videos, offering strong potential for remote healthcare and daily health monitoring. Driven by this potential, various deep learning-based rPPG methods have been proposed to improve rPPG estimation. However, previous deep learning-based rPPG methods have paid little attention to the quality of training labels and their impact on model learning. Contact-based PPG signals used as training labels often contain noise and variability caused by motion artifacts, inconsistent sensor contact, and mo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23174","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/2605.23174/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":"2026-05-25T02:01:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L17M/Cenn5aBLzD6bXozee3VNWYuex+xn6IC0jQpvn/J7MRrdc6A9MURP31mh+xHHyuvAiZYTkeE1aAQH5B4BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T06:11:51.283125Z"},"content_sha256":"5abfc922580fce6556bf8b7118d59b550b151b65567763fb344ede202e52042c","schema_version":"1.0","event_id":"sha256:5abfc922580fce6556bf8b7118d59b550b151b65567763fb344ede202e52042c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I7JWEX4RBDJP25P7FMRAGDQEXG/bundle.json","state_url":"https://pith.science/pith/I7JWEX4RBDJP25P7FMRAGDQEXG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I7JWEX4RBDJP25P7FMRAGDQEXG/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":"2026-06-07T06:11:51Z","links":{"resolver":"https://pith.science/pith/I7JWEX4RBDJP25P7FMRAGDQEXG","bundle":"https://pith.science/pith/I7JWEX4RBDJP25P7FMRAGDQEXG/bundle.json","state":"https://pith.science/pith/I7JWEX4RBDJP25P7FMRAGDQEXG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I7JWEX4RBDJP25P7FMRAGDQEXG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:I7JWEX4RBDJP25P7FMRAGDQEXG","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":"38660c55b5e5206448c8be28b78a843c152eb51c2ecb3b73085c558f26f1dba2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2026-05-22T02:46:11Z","title_canon_sha256":"13bfca923657bec055e1c6ac76c28a933b6b138d82712a54a4927ef207607a2f"},"schema_version":"1.0","source":{"id":"2605.23174","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.23174","created_at":"2026-05-25T02:01:41Z"},{"alias_kind":"arxiv_version","alias_value":"2605.23174v1","created_at":"2026-05-25T02:01:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23174","created_at":"2026-05-25T02:01:41Z"},{"alias_kind":"pith_short_12","alias_value":"I7JWEX4RBDJP","created_at":"2026-05-25T02:01:41Z"},{"alias_kind":"pith_short_16","alias_value":"I7JWEX4RBDJP25P7","created_at":"2026-05-25T02:01:41Z"},{"alias_kind":"pith_short_8","alias_value":"I7JWEX4R","created_at":"2026-05-25T02:01:41Z"}],"graph_snapshots":[{"event_id":"sha256:5abfc922580fce6556bf8b7118d59b550b151b65567763fb344ede202e52042c","target":"graph","created_at":"2026-05-25T02:01:41Z","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/2605.23174/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Remote photoplethysmography (rPPG) enables non-contact measurement of physiological signals from facial videos, offering strong potential for remote healthcare and daily health monitoring. Driven by this potential, various deep learning-based rPPG methods have been proposed to improve rPPG estimation. However, previous deep learning-based rPPG methods have paid little attention to the quality of training labels and their impact on model learning. Contact-based PPG signals used as training labels often contain noise and variability caused by motion artifacts, inconsistent sensor contact, and mo","authors_text":"Changki Sung, Hyun Myung, Jun Seong Lee, Samyeul Noh","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2026-05-22T02:46:11Z","title":"LQ-rPPG: A Label-Quantized Coarse-to-Fine Learning Framework for Remote Physiological Measurement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23174","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:c2ef17c89706b9a1d13002313e6fc85e728e4e3ce130f45adea4b449c894973e","target":"record","created_at":"2026-05-25T02:01:41Z","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":"38660c55b5e5206448c8be28b78a843c152eb51c2ecb3b73085c558f26f1dba2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2026-05-22T02:46:11Z","title_canon_sha256":"13bfca923657bec055e1c6ac76c28a933b6b138d82712a54a4927ef207607a2f"},"schema_version":"1.0","source":{"id":"2605.23174","kind":"arxiv","version":1}},"canonical_sha256":"47d3625f9108d2fd75ff2b22030e04b9967b4c67891f4abb5c0769a1738ca845","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"47d3625f9108d2fd75ff2b22030e04b9967b4c67891f4abb5c0769a1738ca845","first_computed_at":"2026-05-25T02:01:41.495069Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-25T02:01:41.495069Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vYoX6Xgyz/lSu5kEEGMHKbVI+hKsKsO6wYMGbe2Q9oltisFfOb23Ox0Q/vAX3ELe1GtTIlgfoh8VCFL1EWQmDg==","signature_status":"signed_v1","signed_at":"2026-05-25T02:01:41.495728Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.23174","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c2ef17c89706b9a1d13002313e6fc85e728e4e3ce130f45adea4b449c894973e","sha256:5abfc922580fce6556bf8b7118d59b550b151b65567763fb344ede202e52042c"],"state_sha256":"60a1a7b8da07b8ce64b7905911ca594f197f9b2098e7b7f160de85f78b2eea3c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JTIYQyFG7jKuVo6fGQ0oOUdKHcgSNpF4/4dphCQcstGHhAGXFaQtc079TOwyH7j3iI6blFrGNhqmSWc6gS/GBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T06:11:51.286715Z","bundle_sha256":"e3d096c1f9fb66392da30a65d56779e09712c2f0be0647f74e7a60adc64cc692"}}