{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:KO3JEAOLKAGWJ74H6RPAZDQPS6","short_pith_number":"pith:KO3JEAOL","canonical_record":{"source":{"id":"1607.01040","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-06-28T07:54:03Z","cross_cats_sorted":[],"title_canon_sha256":"eaa7d6426b31b647a9e4e766c89d2ca49b3eba4a425f8db28ead221bd259dad9","abstract_canon_sha256":"b5d79aca2762db4266572c32f482a4808d985cb9900c4001269b965565f11820"},"schema_version":"1.0"},"canonical_sha256":"53b69201cb500d64ff87f45e0c8e0f9786281bb06c9d0b834a943e06d55f2810","source":{"kind":"arxiv","id":"1607.01040","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.01040","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"arxiv_version","alias_value":"1607.01040v1","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.01040","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"pith_short_12","alias_value":"KO3JEAOLKAGW","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"KO3JEAOLKAGWJ74H","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"KO3JEAOL","created_at":"2026-05-18T12:30:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:KO3JEAOLKAGWJ74H6RPAZDQPS6","target":"record","payload":{"canonical_record":{"source":{"id":"1607.01040","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-06-28T07:54:03Z","cross_cats_sorted":[],"title_canon_sha256":"eaa7d6426b31b647a9e4e766c89d2ca49b3eba4a425f8db28ead221bd259dad9","abstract_canon_sha256":"b5d79aca2762db4266572c32f482a4808d985cb9900c4001269b965565f11820"},"schema_version":"1.0"},"canonical_sha256":"53b69201cb500d64ff87f45e0c8e0f9786281bb06c9d0b834a943e06d55f2810","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:30.247658Z","signature_b64":"iOEd07BtJTZ98nKVWBFpKrrHhGUQVfZ2lRU8Z+dO1o6djTSQeKviR+F1YwMRc7Zhie0gCU3rosfE9tOPn87qCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"53b69201cb500d64ff87f45e0c8e0f9786281bb06c9d0b834a943e06d55f2810","last_reissued_at":"2026-05-18T01:11:30.247248Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:30.247248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.01040","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":"2026-05-18T01:11:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K4fF+CdSKrewMvAvmZkfP2dpjkHxaSBDGnlVJ9/o+HEapH/Kf5NdWD99d9uvy9z2esqAYY+hb/7x13mqLs9FBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:05:30.613695Z"},"content_sha256":"5c5bffe5a37cf9600f46e6013d5f4db802de94cdf2d88bc7facc0bde3ce45723","schema_version":"1.0","event_id":"sha256:5c5bffe5a37cf9600f46e6013d5f4db802de94cdf2d88bc7facc0bde3ce45723"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:KO3JEAOLKAGWJ74H6RPAZDQPS6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Facial Expression Classification Using Rotation Slepian-based Moment Invariants","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Cuiming Zou, Kit Ian Kou","submitted_at":"2016-06-28T07:54:03Z","abstract_excerpt":"Rotation moment invariants have been of great interest in image processing and pattern recognition. This paper presents a novel kind of rotation moment invariants based on the Slepian functions, which were originally introduced in the method of separation of variables for Helmholtz equations. They were first proposed for time series by Slepian and his coworkers in the 1960s. Recent studies have shown that these functions have an good performance in local approximation compared to other approximation basis. Motivated by the good approximation performance, we construct the Slepian-based moments "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.01040","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":""},"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":"2026-05-18T01:11:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PTxBQPdp1zUIbBRdQO8V+8w9gkUoHudR42KhDDLu+JqiZjkiLDB+BXBni1PbrMHbiUucxms8V7LCkIP8PpuyDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:05:30.614048Z"},"content_sha256":"14951f5e98e0ea7d95acf207fc84e2d2599bd57299ec3e743dd4a2934be66a44","schema_version":"1.0","event_id":"sha256:14951f5e98e0ea7d95acf207fc84e2d2599bd57299ec3e743dd4a2934be66a44"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KO3JEAOLKAGWJ74H6RPAZDQPS6/bundle.json","state_url":"https://pith.science/pith/KO3JEAOLKAGWJ74H6RPAZDQPS6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KO3JEAOLKAGWJ74H6RPAZDQPS6/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":"2026-06-02T14:05:30Z","links":{"resolver":"https://pith.science/pith/KO3JEAOLKAGWJ74H6RPAZDQPS6","bundle":"https://pith.science/pith/KO3JEAOLKAGWJ74H6RPAZDQPS6/bundle.json","state":"https://pith.science/pith/KO3JEAOLKAGWJ74H6RPAZDQPS6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KO3JEAOLKAGWJ74H6RPAZDQPS6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:KO3JEAOLKAGWJ74H6RPAZDQPS6","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":"b5d79aca2762db4266572c32f482a4808d985cb9900c4001269b965565f11820","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-06-28T07:54:03Z","title_canon_sha256":"eaa7d6426b31b647a9e4e766c89d2ca49b3eba4a425f8db28ead221bd259dad9"},"schema_version":"1.0","source":{"id":"1607.01040","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.01040","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"arxiv_version","alias_value":"1607.01040v1","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.01040","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"pith_short_12","alias_value":"KO3JEAOLKAGW","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"KO3JEAOLKAGWJ74H","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"KO3JEAOL","created_at":"2026-05-18T12:30:25Z"}],"graph_snapshots":[{"event_id":"sha256:14951f5e98e0ea7d95acf207fc84e2d2599bd57299ec3e743dd4a2934be66a44","target":"graph","created_at":"2026-05-18T01:11:30Z","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":"Rotation moment invariants have been of great interest in image processing and pattern recognition. This paper presents a novel kind of rotation moment invariants based on the Slepian functions, which were originally introduced in the method of separation of variables for Helmholtz equations. They were first proposed for time series by Slepian and his coworkers in the 1960s. Recent studies have shown that these functions have an good performance in local approximation compared to other approximation basis. Motivated by the good approximation performance, we construct the Slepian-based moments ","authors_text":"Cuiming Zou, Kit Ian Kou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-06-28T07:54:03Z","title":"Facial Expression Classification Using Rotation Slepian-based Moment Invariants"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.01040","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":"sha256:5c5bffe5a37cf9600f46e6013d5f4db802de94cdf2d88bc7facc0bde3ce45723","target":"record","created_at":"2026-05-18T01:11:30Z","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":"b5d79aca2762db4266572c32f482a4808d985cb9900c4001269b965565f11820","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-06-28T07:54:03Z","title_canon_sha256":"eaa7d6426b31b647a9e4e766c89d2ca49b3eba4a425f8db28ead221bd259dad9"},"schema_version":"1.0","source":{"id":"1607.01040","kind":"arxiv","version":1}},"canonical_sha256":"53b69201cb500d64ff87f45e0c8e0f9786281bb06c9d0b834a943e06d55f2810","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"53b69201cb500d64ff87f45e0c8e0f9786281bb06c9d0b834a943e06d55f2810","first_computed_at":"2026-05-18T01:11:30.247248Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:30.247248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iOEd07BtJTZ98nKVWBFpKrrHhGUQVfZ2lRU8Z+dO1o6djTSQeKviR+F1YwMRc7Zhie0gCU3rosfE9tOPn87qCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:30.247658Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.01040","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5c5bffe5a37cf9600f46e6013d5f4db802de94cdf2d88bc7facc0bde3ce45723","sha256:14951f5e98e0ea7d95acf207fc84e2d2599bd57299ec3e743dd4a2934be66a44"],"state_sha256":"dbf00e6fecca285723c11b04b4e4b447c807cb30838a8ba8e5fd8efb350dd8ed"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OU04ZVK33Bm8jHEAoYq+ipiWe7q7jrFbNGmOeFjNNjcpk6Rsm8Hwd7RXMH4NiynHOtrUrpGOYIuih5X2ZWP3AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T14:05:30.615986Z","bundle_sha256":"63b129995e42e38c5f8701587a5c24b666e3a35a0b7cbe4ac0a32eed652c63b6"}}