{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DK7KZMS4MNBS5JIRFQJRZQS4DN","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":"32f7e4c2848028e72cfa229ea9f6b3bfe6b239752ca77632b982bb4c63b1361e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-07-26T06:21:12Z","title_canon_sha256":"90c09337805cc8fd1d73a10415a0b53ee5769efc9b43bd03eacd0c1251c890ee"},"schema_version":"1.0","source":{"id":"1807.09968","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.09968","created_at":"2026-05-18T00:09:45Z"},{"alias_kind":"arxiv_version","alias_value":"1807.09968v1","created_at":"2026-05-18T00:09:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.09968","created_at":"2026-05-18T00:09:45Z"},{"alias_kind":"pith_short_12","alias_value":"DK7KZMS4MNBS","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DK7KZMS4MNBS5JIR","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DK7KZMS4","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:f536f0cfc67aa62626c11b7daeacab5ee1d0e4ad129717a77f9e0b3d25e9d918","target":"graph","created_at":"2026-05-18T00:09:45Z","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":"Many prior face anti-spoofing works develop discriminative models for recognizing the subtle differences between live and spoof faces. Those approaches often regard the image as an indivisible unit, and process it holistically, without explicit modeling of the spoofing process. In this work, motivated by the noise modeling and denoising algorithms, we identify a new problem of face de-spoofing, for the purpose of anti-spoofing: inversely decomposing a spoof face into a spoof noise and a live face, and then utilizing the spoof noise for classification. A CNN architecture with proper constraints","authors_text":"Amin Jourabloo, Xiaoming Liu, Yaojie Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-07-26T06:21:12Z","title":"Face De-Spoofing: Anti-Spoofing via Noise Modeling"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.09968","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":"sha256:2edfb4c6ad6852492a1ca54ac18f9deb13a39c19b2c980d3cbf057b1e8e89f6e","target":"record","created_at":"2026-05-18T00:09:45Z","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":"32f7e4c2848028e72cfa229ea9f6b3bfe6b239752ca77632b982bb4c63b1361e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-07-26T06:21:12Z","title_canon_sha256":"90c09337805cc8fd1d73a10415a0b53ee5769efc9b43bd03eacd0c1251c890ee"},"schema_version":"1.0","source":{"id":"1807.09968","kind":"arxiv","version":1}},"canonical_sha256":"1abeacb25c63432ea5112c131cc25c1b6bfadd5020bf62b271ce0967dd46054e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1abeacb25c63432ea5112c131cc25c1b6bfadd5020bf62b271ce0967dd46054e","first_computed_at":"2026-05-18T00:09:45.895645Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:45.895645Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wjCzGD0O5RaOLEdR2CIbrIKOadm0ZSHwA+HMAVlQitLYh2mAxtiAUGF04kR2WnbD4CGXWqCb0ikrD6gVyd1BBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:45.896436Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.09968","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2edfb4c6ad6852492a1ca54ac18f9deb13a39c19b2c980d3cbf057b1e8e89f6e","sha256:f536f0cfc67aa62626c11b7daeacab5ee1d0e4ad129717a77f9e0b3d25e9d918"],"state_sha256":"e45055584db5b2e273ce3c919ca51553ddc9c2cfd6b64ea60de4cddbd94264bb"}