{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:2PSPY6IA3KVUWYXFDE7SQ2VKMH","short_pith_number":"pith:2PSPY6IA","canonical_record":{"source":{"id":"2112.01314","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-12-02T15:18:29Z","cross_cats_sorted":[],"title_canon_sha256":"d1ad4a0ee91a9e3c3f71fd4a60566c09165e72301d67b9cfef932c9045b0ce07","abstract_canon_sha256":"ac18377e710b0e97aa2dae5c6ebf3e6989302786dad6468afca8d3504ef64457"},"schema_version":"1.0"},"canonical_sha256":"d3e4fc7900daab4b62e5193f286aaa61cb97d679299bc5befcfbd2a029670fd2","source":{"kind":"arxiv","id":"2112.01314","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.01314","created_at":"2026-07-05T06:51:16Z"},{"alias_kind":"arxiv_version","alias_value":"2112.01314v3","created_at":"2026-07-05T06:51:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.01314","created_at":"2026-07-05T06:51:16Z"},{"alias_kind":"pith_short_12","alias_value":"2PSPY6IA3KVU","created_at":"2026-07-05T06:51:16Z"},{"alias_kind":"pith_short_16","alias_value":"2PSPY6IA3KVUWYXF","created_at":"2026-07-05T06:51:16Z"},{"alias_kind":"pith_short_8","alias_value":"2PSPY6IA","created_at":"2026-07-05T06:51:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:2PSPY6IA3KVUWYXFDE7SQ2VKMH","target":"record","payload":{"canonical_record":{"source":{"id":"2112.01314","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-12-02T15:18:29Z","cross_cats_sorted":[],"title_canon_sha256":"d1ad4a0ee91a9e3c3f71fd4a60566c09165e72301d67b9cfef932c9045b0ce07","abstract_canon_sha256":"ac18377e710b0e97aa2dae5c6ebf3e6989302786dad6468afca8d3504ef64457"},"schema_version":"1.0"},"canonical_sha256":"d3e4fc7900daab4b62e5193f286aaa61cb97d679299bc5befcfbd2a029670fd2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:51:16.840629Z","signature_b64":"lQx5Y/Xt0yYPMzTQUMjexbjrb75Zvou+r/JTkRVimSi+xUsn3gZal3iGmIOii9mOG6uHIE8h6NeXgF0YgZovBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3e4fc7900daab4b62e5193f286aaa61cb97d679299bc5befcfbd2a029670fd2","last_reissued_at":"2026-07-05T06:51:16.840150Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:51:16.840150Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.01314","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:51:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9IWsuj6n5xugSo60ahMtKjQrcod161q0XrG9VvnwO2Fzpn0y3zrKlo0l3eZ+Ltvvm69U5nn+7XFKpHR4I/jMCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T22:44:11.222579Z"},"content_sha256":"03acc4f6700d1af0f99eb343df9fabe8f2977e6a153357358f5a9418c67fcf0f","schema_version":"1.0","event_id":"sha256:03acc4f6700d1af0f99eb343df9fabe8f2977e6a153357358f5a9418c67fcf0f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:2PSPY6IA3KVUWYXFDE7SQ2VKMH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SIDNet: Learning Shading-aware Illumination Descriptor for Image Harmonization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Ntumba Elie Nsampi, Qing Wang, Xue Wang, Zhongyun Hu","submitted_at":"2021-12-02T15:18:29Z","abstract_excerpt":"Image harmonization aims at adjusting the appearance of the foreground to make it more compatible with the background. Without exploring background illumination and its effects on the foreground elements, existing works are incapable of generating a realistic foreground shading. In this paper, we decompose the image harmonization task into two sub-problems: 1) illumination estimation of the background image and 2) re-rendering of foreground objects under background illumination. Before solving these two sub-problems, we first learn a shading-aware illumination descriptor via a well-designed ne"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.01314","kind":"arxiv","version":3},"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/2112.01314/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":"2026-07-05T06:51:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2loICubjdHBaAHa9DCd2pqq0fdxWYgCp6Y2SzsDeEqyRCqTzUJsrOofGDMLJA3taexlm/slCR5CWUwsm+eneCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T22:44:11.223528Z"},"content_sha256":"0e56c3983c9db1dab29f17ab533319c974d4625f141418f947c7565e74b75d57","schema_version":"1.0","event_id":"sha256:0e56c3983c9db1dab29f17ab533319c974d4625f141418f947c7565e74b75d57"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2PSPY6IA3KVUWYXFDE7SQ2VKMH/bundle.json","state_url":"https://pith.science/pith/2PSPY6IA3KVUWYXFDE7SQ2VKMH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2PSPY6IA3KVUWYXFDE7SQ2VKMH/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":"2026-08-17T22:44:11Z","links":{"resolver":"https://pith.science/pith/2PSPY6IA3KVUWYXFDE7SQ2VKMH","bundle":"https://pith.science/pith/2PSPY6IA3KVUWYXFDE7SQ2VKMH/bundle.json","state":"https://pith.science/pith/2PSPY6IA3KVUWYXFDE7SQ2VKMH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2PSPY6IA3KVUWYXFDE7SQ2VKMH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:2PSPY6IA3KVUWYXFDE7SQ2VKMH","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":"ac18377e710b0e97aa2dae5c6ebf3e6989302786dad6468afca8d3504ef64457","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-12-02T15:18:29Z","title_canon_sha256":"d1ad4a0ee91a9e3c3f71fd4a60566c09165e72301d67b9cfef932c9045b0ce07"},"schema_version":"1.0","source":{"id":"2112.01314","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.01314","created_at":"2026-07-05T06:51:16Z"},{"alias_kind":"arxiv_version","alias_value":"2112.01314v3","created_at":"2026-07-05T06:51:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.01314","created_at":"2026-07-05T06:51:16Z"},{"alias_kind":"pith_short_12","alias_value":"2PSPY6IA3KVU","created_at":"2026-07-05T06:51:16Z"},{"alias_kind":"pith_short_16","alias_value":"2PSPY6IA3KVUWYXF","created_at":"2026-07-05T06:51:16Z"},{"alias_kind":"pith_short_8","alias_value":"2PSPY6IA","created_at":"2026-07-05T06:51:16Z"}],"graph_snapshots":[{"event_id":"sha256:0e56c3983c9db1dab29f17ab533319c974d4625f141418f947c7565e74b75d57","target":"graph","created_at":"2026-07-05T06:51:16Z","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/2112.01314/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Image harmonization aims at adjusting the appearance of the foreground to make it more compatible with the background. Without exploring background illumination and its effects on the foreground elements, existing works are incapable of generating a realistic foreground shading. In this paper, we decompose the image harmonization task into two sub-problems: 1) illumination estimation of the background image and 2) re-rendering of foreground objects under background illumination. Before solving these two sub-problems, we first learn a shading-aware illumination descriptor via a well-designed ne","authors_text":"Ntumba Elie Nsampi, Qing Wang, Xue Wang, Zhongyun Hu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-12-02T15:18:29Z","title":"SIDNet: Learning Shading-aware Illumination Descriptor for Image Harmonization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.01314","kind":"arxiv","version":3},"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":"sha256:03acc4f6700d1af0f99eb343df9fabe8f2977e6a153357358f5a9418c67fcf0f","target":"record","created_at":"2026-07-05T06:51:16Z","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":"ac18377e710b0e97aa2dae5c6ebf3e6989302786dad6468afca8d3504ef64457","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-12-02T15:18:29Z","title_canon_sha256":"d1ad4a0ee91a9e3c3f71fd4a60566c09165e72301d67b9cfef932c9045b0ce07"},"schema_version":"1.0","source":{"id":"2112.01314","kind":"arxiv","version":3}},"canonical_sha256":"d3e4fc7900daab4b62e5193f286aaa61cb97d679299bc5befcfbd2a029670fd2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3e4fc7900daab4b62e5193f286aaa61cb97d679299bc5befcfbd2a029670fd2","first_computed_at":"2026-07-05T06:51:16.840150Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:51:16.840150Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lQx5Y/Xt0yYPMzTQUMjexbjrb75Zvou+r/JTkRVimSi+xUsn3gZal3iGmIOii9mOG6uHIE8h6NeXgF0YgZovBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:51:16.840629Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.01314","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:03acc4f6700d1af0f99eb343df9fabe8f2977e6a153357358f5a9418c67fcf0f","sha256:0e56c3983c9db1dab29f17ab533319c974d4625f141418f947c7565e74b75d57"],"state_sha256":"6c99483726046ecf7c2d7102e476ff5cc8522891bdde351712d73d06a9b893af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WYIvZEG3L4zNETdehwQzu3tI7QBNIaVWiiJcC0q1Uoyl1spRbYL7DU2JFy8P/ZbWbt8bOsCPlTy0vnXngr2zDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T22:44:11.229460Z","bundle_sha256":"75f8fcc4218e8c3479fd3ab19322de89fbf4b55259adfd66190b563c81870b45"}}