{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:JJLRE4HXEYYCYP7FD62PKS3FRZ","short_pith_number":"pith:JJLRE4HX","canonical_record":{"source":{"id":"2211.14036","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-11-25T11:24:04Z","cross_cats_sorted":["cs.MM"],"title_canon_sha256":"44bf021dde23539c7b1198ef9c2e6c5baf4a6426b70565043bd2c8ca52bd117c","abstract_canon_sha256":"4998eb4158c23a1e963516132ecb197eb15a6dd81d536723c5d9bc8d1fa2adfe"},"schema_version":"1.0"},"canonical_sha256":"4a571270f726302c3fe51fb4f54b658e6a49dba02dd10696a312140fdc8bddc0","source":{"kind":"arxiv","id":"2211.14036","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.14036","created_at":"2026-07-05T05:19:28Z"},{"alias_kind":"arxiv_version","alias_value":"2211.14036v1","created_at":"2026-07-05T05:19:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.14036","created_at":"2026-07-05T05:19:28Z"},{"alias_kind":"pith_short_12","alias_value":"JJLRE4HXEYYC","created_at":"2026-07-05T05:19:28Z"},{"alias_kind":"pith_short_16","alias_value":"JJLRE4HXEYYCYP7F","created_at":"2026-07-05T05:19:28Z"},{"alias_kind":"pith_short_8","alias_value":"JJLRE4HX","created_at":"2026-07-05T05:19:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:JJLRE4HXEYYCYP7FD62PKS3FRZ","target":"record","payload":{"canonical_record":{"source":{"id":"2211.14036","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-11-25T11:24:04Z","cross_cats_sorted":["cs.MM"],"title_canon_sha256":"44bf021dde23539c7b1198ef9c2e6c5baf4a6426b70565043bd2c8ca52bd117c","abstract_canon_sha256":"4998eb4158c23a1e963516132ecb197eb15a6dd81d536723c5d9bc8d1fa2adfe"},"schema_version":"1.0"},"canonical_sha256":"4a571270f726302c3fe51fb4f54b658e6a49dba02dd10696a312140fdc8bddc0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:19:28.974208Z","signature_b64":"NdYKVqV9q5tndrVkuwRvxjJS0mL65kiExCx5NK71yTrih1MGauoUzgg6fqRHFd8buguRCwCi6dk1coPrtBE+CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4a571270f726302c3fe51fb4f54b658e6a49dba02dd10696a312140fdc8bddc0","last_reissued_at":"2026-07-05T05:19:28.973744Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:19:28.973744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2211.14036","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":"2026-07-05T05:19:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xaVGXRqQwO8y7nrYgOaBNyWS+jTGEMZZBAZYd091fPrerPHwCqO9LKgIqAh25cSLwORbhBPNfrZ0m5jRsL87DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T05:47:11.651286Z"},"content_sha256":"c88ad82d045a121080cf03555cda53fb55eb1ce22c18726cca9e61021b2587e9","schema_version":"1.0","event_id":"sha256:c88ad82d045a121080cf03555cda53fb55eb1ce22c18726cca9e61021b2587e9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:JJLRE4HXEYYCYP7FD62PKS3FRZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Privileged Prior Information Distillation for Image Matting","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.MM"],"primary_cat":"cs.CV","authors_text":"Bo Xu, Cheng Lu, Cheng Lyu, Chuang Zhang, Han Huang, Jiake Xie, Ming Wu, Xin Huang, Yong Tang","submitted_at":"2022-11-25T11:24:04Z","abstract_excerpt":"Performance of trimap-free image matting methods is limited when trying to decouple the deterministic and undetermined regions, especially in the scenes where foregrounds are semantically ambiguous, chromaless, or high transmittance. In this paper, we propose a novel framework named Privileged Prior Information Distillation for Image Matting (PPID-IM) that can effectively transfer privileged prior environment-aware information to improve the performance of students in solving hard foregrounds. The prior information of trimap regulates only the teacher model during the training stage, while not"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.14036","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/2211.14036/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":"2026-07-05T05:19:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QuG8p7dNNtBDPJZ9HXhgKIE67m8idvOD1LkslwZCyToJulEGz6NxDY6moKzjdoTsIoqaP/zqyCqD2tBnVYFlDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T05:47:11.651682Z"},"content_sha256":"007797a543498429911bf682ed83d3ad9b78d061f090e3b2e04c791de81f4dd7","schema_version":"1.0","event_id":"sha256:007797a543498429911bf682ed83d3ad9b78d061f090e3b2e04c791de81f4dd7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JJLRE4HXEYYCYP7FD62PKS3FRZ/bundle.json","state_url":"https://pith.science/pith/JJLRE4HXEYYCYP7FD62PKS3FRZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JJLRE4HXEYYCYP7FD62PKS3FRZ/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":"2026-07-07T05:47:11Z","links":{"resolver":"https://pith.science/pith/JJLRE4HXEYYCYP7FD62PKS3FRZ","bundle":"https://pith.science/pith/JJLRE4HXEYYCYP7FD62PKS3FRZ/bundle.json","state":"https://pith.science/pith/JJLRE4HXEYYCYP7FD62PKS3FRZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JJLRE4HXEYYCYP7FD62PKS3FRZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:JJLRE4HXEYYCYP7FD62PKS3FRZ","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":"4998eb4158c23a1e963516132ecb197eb15a6dd81d536723c5d9bc8d1fa2adfe","cross_cats_sorted":["cs.MM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-11-25T11:24:04Z","title_canon_sha256":"44bf021dde23539c7b1198ef9c2e6c5baf4a6426b70565043bd2c8ca52bd117c"},"schema_version":"1.0","source":{"id":"2211.14036","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.14036","created_at":"2026-07-05T05:19:28Z"},{"alias_kind":"arxiv_version","alias_value":"2211.14036v1","created_at":"2026-07-05T05:19:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.14036","created_at":"2026-07-05T05:19:28Z"},{"alias_kind":"pith_short_12","alias_value":"JJLRE4HXEYYC","created_at":"2026-07-05T05:19:28Z"},{"alias_kind":"pith_short_16","alias_value":"JJLRE4HXEYYCYP7F","created_at":"2026-07-05T05:19:28Z"},{"alias_kind":"pith_short_8","alias_value":"JJLRE4HX","created_at":"2026-07-05T05:19:28Z"}],"graph_snapshots":[{"event_id":"sha256:007797a543498429911bf682ed83d3ad9b78d061f090e3b2e04c791de81f4dd7","target":"graph","created_at":"2026-07-05T05:19:28Z","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/2211.14036/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Performance of trimap-free image matting methods is limited when trying to decouple the deterministic and undetermined regions, especially in the scenes where foregrounds are semantically ambiguous, chromaless, or high transmittance. In this paper, we propose a novel framework named Privileged Prior Information Distillation for Image Matting (PPID-IM) that can effectively transfer privileged prior environment-aware information to improve the performance of students in solving hard foregrounds. The prior information of trimap regulates only the teacher model during the training stage, while not","authors_text":"Bo Xu, Cheng Lu, Cheng Lyu, Chuang Zhang, Han Huang, Jiake Xie, Ming Wu, Xin Huang, Yong Tang","cross_cats":["cs.MM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-11-25T11:24:04Z","title":"Privileged Prior Information Distillation for Image Matting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.14036","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:c88ad82d045a121080cf03555cda53fb55eb1ce22c18726cca9e61021b2587e9","target":"record","created_at":"2026-07-05T05:19:28Z","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":"4998eb4158c23a1e963516132ecb197eb15a6dd81d536723c5d9bc8d1fa2adfe","cross_cats_sorted":["cs.MM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-11-25T11:24:04Z","title_canon_sha256":"44bf021dde23539c7b1198ef9c2e6c5baf4a6426b70565043bd2c8ca52bd117c"},"schema_version":"1.0","source":{"id":"2211.14036","kind":"arxiv","version":1}},"canonical_sha256":"4a571270f726302c3fe51fb4f54b658e6a49dba02dd10696a312140fdc8bddc0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4a571270f726302c3fe51fb4f54b658e6a49dba02dd10696a312140fdc8bddc0","first_computed_at":"2026-07-05T05:19:28.973744Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:19:28.973744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NdYKVqV9q5tndrVkuwRvxjJS0mL65kiExCx5NK71yTrih1MGauoUzgg6fqRHFd8buguRCwCi6dk1coPrtBE+CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:19:28.974208Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.14036","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c88ad82d045a121080cf03555cda53fb55eb1ce22c18726cca9e61021b2587e9","sha256:007797a543498429911bf682ed83d3ad9b78d061f090e3b2e04c791de81f4dd7"],"state_sha256":"3a10d177a2a43f0e3b46bc48b71f77e11354d9187143190990c2d9974e3021c9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d98My6qPA5Qj1bIuWQhSEq8d8UsxHdWAXoMgBZB1WXegWQtXStGvoI2WM1QVl70hu48x+di6hRo+JR/pXQo4Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T05:47:11.653690Z","bundle_sha256":"173279e1b044ace2b0f2f4abbc5221ebcdde0b49c72c1b117cc6cc793d68697f"}}