{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:UNIKYMANPGTHW2U6UR6ZIRBNRH","short_pith_number":"pith:UNIKYMAN","canonical_record":{"source":{"id":"2006.03028","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-06-04T17:27:49Z","cross_cats_sorted":[],"title_canon_sha256":"eadc361fb715378111f0818a19b1ab4f873f103ec7c51afd155b4d7e5b17bd00","abstract_canon_sha256":"ac604aedbd332e620cab0679f1b9d48db59d08537f1c5a08ed7dae110e222719"},"schema_version":"1.0"},"canonical_sha256":"a350ac300d79a67b6a9ea47d94442d89f9d1f35d447e329702d4f9a324af9ae4","source":{"kind":"arxiv","id":"2006.03028","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.03028","created_at":"2026-07-05T01:18:19Z"},{"alias_kind":"arxiv_version","alias_value":"2006.03028v2","created_at":"2026-07-05T01:18:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.03028","created_at":"2026-07-05T01:18:19Z"},{"alias_kind":"pith_short_12","alias_value":"UNIKYMANPGTH","created_at":"2026-07-05T01:18:19Z"},{"alias_kind":"pith_short_16","alias_value":"UNIKYMANPGTHW2U6","created_at":"2026-07-05T01:18:19Z"},{"alias_kind":"pith_short_8","alias_value":"UNIKYMAN","created_at":"2026-07-05T01:18:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:UNIKYMANPGTHW2U6UR6ZIRBNRH","target":"record","payload":{"canonical_record":{"source":{"id":"2006.03028","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-06-04T17:27:49Z","cross_cats_sorted":[],"title_canon_sha256":"eadc361fb715378111f0818a19b1ab4f873f103ec7c51afd155b4d7e5b17bd00","abstract_canon_sha256":"ac604aedbd332e620cab0679f1b9d48db59d08537f1c5a08ed7dae110e222719"},"schema_version":"1.0"},"canonical_sha256":"a350ac300d79a67b6a9ea47d94442d89f9d1f35d447e329702d4f9a324af9ae4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:18:19.643511Z","signature_b64":"jKHSKQGJ2Gq91+HZl5G/pkJUNNI87nzVd9HStPsAbHbqgJFR9HIu2DqbKWjNri3hOLE2XKqaeWQofCF484eyBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a350ac300d79a67b6a9ea47d94442d89f9d1f35d447e329702d4f9a324af9ae4","last_reissued_at":"2026-07-05T01:18:19.643048Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:18:19.643048Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.03028","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":"2026-07-05T01:18:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Oaiwzq7jCLV65+hAmXbm0vkW+kty3nIytfwC3/32fcyHN+YljbWETq3tbPGoyN4MlVsx0bHA04AAA6zCsKZ+Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T21:08:24.787167Z"},"content_sha256":"beed0d8f999100b80f77b97f2cd82c6c30c2afc0233a999d450a56300e844b6b","schema_version":"1.0","event_id":"sha256:beed0d8f999100b80f77b97f2cd82c6c30c2afc0233a999d450a56300e844b6b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:UNIKYMANPGTHW2U6UR6ZIRBNRH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Visually Guided Sound Source Separation using Cascaded Opponent Filter Network","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Esa Rahtu, Lingyu Zhu","submitted_at":"2020-06-04T17:27:49Z","abstract_excerpt":"The objective of this paper is to recover the original component signals from a mixture audio with the aid of visual cues of the sound sources. Such task is usually referred as visually guided sound source separation. The proposed Cascaded Opponent Filter (COF) framework consists of multiple stages, which recursively refine the source separation. A key element in COF is a novel opponent filter module that identifies and relocates residual components between sources. The system is guided by the appearance and motion of the source, and, for this purpose, we study different representations based "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.03028","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/2006.03028/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":"2026-07-05T01:18:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TItpQ73UJJ79bmuJlQqE5AnacqiUiivCBcW11D2B/hkPAZAFj1SQo2jdeHifGkH9qjcL3SNlgBTaaCCeL/0mCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T21:08:24.787677Z"},"content_sha256":"a4188318d50d9fdcf1eff5e7a91455213891a2c7df91ee6ea915fbd6dc0a5fe3","schema_version":"1.0","event_id":"sha256:a4188318d50d9fdcf1eff5e7a91455213891a2c7df91ee6ea915fbd6dc0a5fe3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UNIKYMANPGTHW2U6UR6ZIRBNRH/bundle.json","state_url":"https://pith.science/pith/UNIKYMANPGTHW2U6UR6ZIRBNRH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UNIKYMANPGTHW2U6UR6ZIRBNRH/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":"2026-08-12T21:08:24Z","links":{"resolver":"https://pith.science/pith/UNIKYMANPGTHW2U6UR6ZIRBNRH","bundle":"https://pith.science/pith/UNIKYMANPGTHW2U6UR6ZIRBNRH/bundle.json","state":"https://pith.science/pith/UNIKYMANPGTHW2U6UR6ZIRBNRH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UNIKYMANPGTHW2U6UR6ZIRBNRH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:UNIKYMANPGTHW2U6UR6ZIRBNRH","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":"ac604aedbd332e620cab0679f1b9d48db59d08537f1c5a08ed7dae110e222719","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-06-04T17:27:49Z","title_canon_sha256":"eadc361fb715378111f0818a19b1ab4f873f103ec7c51afd155b4d7e5b17bd00"},"schema_version":"1.0","source":{"id":"2006.03028","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.03028","created_at":"2026-07-05T01:18:19Z"},{"alias_kind":"arxiv_version","alias_value":"2006.03028v2","created_at":"2026-07-05T01:18:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.03028","created_at":"2026-07-05T01:18:19Z"},{"alias_kind":"pith_short_12","alias_value":"UNIKYMANPGTH","created_at":"2026-07-05T01:18:19Z"},{"alias_kind":"pith_short_16","alias_value":"UNIKYMANPGTHW2U6","created_at":"2026-07-05T01:18:19Z"},{"alias_kind":"pith_short_8","alias_value":"UNIKYMAN","created_at":"2026-07-05T01:18:19Z"}],"graph_snapshots":[{"event_id":"sha256:a4188318d50d9fdcf1eff5e7a91455213891a2c7df91ee6ea915fbd6dc0a5fe3","target":"graph","created_at":"2026-07-05T01:18:19Z","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/2006.03028/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The objective of this paper is to recover the original component signals from a mixture audio with the aid of visual cues of the sound sources. Such task is usually referred as visually guided sound source separation. The proposed Cascaded Opponent Filter (COF) framework consists of multiple stages, which recursively refine the source separation. A key element in COF is a novel opponent filter module that identifies and relocates residual components between sources. The system is guided by the appearance and motion of the source, and, for this purpose, we study different representations based ","authors_text":"Esa Rahtu, Lingyu Zhu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-06-04T17:27:49Z","title":"Visually Guided Sound Source Separation using Cascaded Opponent Filter Network"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.03028","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:beed0d8f999100b80f77b97f2cd82c6c30c2afc0233a999d450a56300e844b6b","target":"record","created_at":"2026-07-05T01:18:19Z","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":"ac604aedbd332e620cab0679f1b9d48db59d08537f1c5a08ed7dae110e222719","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-06-04T17:27:49Z","title_canon_sha256":"eadc361fb715378111f0818a19b1ab4f873f103ec7c51afd155b4d7e5b17bd00"},"schema_version":"1.0","source":{"id":"2006.03028","kind":"arxiv","version":2}},"canonical_sha256":"a350ac300d79a67b6a9ea47d94442d89f9d1f35d447e329702d4f9a324af9ae4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a350ac300d79a67b6a9ea47d94442d89f9d1f35d447e329702d4f9a324af9ae4","first_computed_at":"2026-07-05T01:18:19.643048Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:18:19.643048Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jKHSKQGJ2Gq91+HZl5G/pkJUNNI87nzVd9HStPsAbHbqgJFR9HIu2DqbKWjNri3hOLE2XKqaeWQofCF484eyBA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:18:19.643511Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.03028","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:beed0d8f999100b80f77b97f2cd82c6c30c2afc0233a999d450a56300e844b6b","sha256:a4188318d50d9fdcf1eff5e7a91455213891a2c7df91ee6ea915fbd6dc0a5fe3"],"state_sha256":"1f4d5aa7ef44e6aee494cfafc61977ee99e10f05560ffcd041ed3544db4447dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WoypRuAI8UZXPMuFMLpP659+MW1wl55THJRB7OXzVxMoONGF+Vpfjxp4D+rjQNMVHMCyNI7YThUe39Jtd5YZAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T21:08:24.793288Z","bundle_sha256":"816becd45b1aa76bc23b8aa56b831b45e960e80492a0ee796e5bfb4d2874be13"}}