{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:QOYIUN5KIPTACQV55WEER56BRM","short_pith_number":"pith:QOYIUN5K","canonical_record":{"source":{"id":"2305.20089","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-05-31T17:59:26Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"7c16af42831df0645a1cba9422a03091e269724ed5232d98dad5afb3ddca0849","abstract_canon_sha256":"676303d3563559659d28a46634281c95d348663b1307a91ed7d884ed33a4f5cf"},"schema_version":"1.0"},"canonical_sha256":"83b08a37aa43e60142bded8848f7c18b1c90a3c1961a60cfaee7114da302095d","source":{"kind":"arxiv","id":"2305.20089","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.20089","created_at":"2026-07-05T07:33:51Z"},{"alias_kind":"arxiv_version","alias_value":"2305.20089v2","created_at":"2026-07-05T07:33:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.20089","created_at":"2026-07-05T07:33:51Z"},{"alias_kind":"pith_short_12","alias_value":"QOYIUN5KIPTA","created_at":"2026-07-05T07:33:51Z"},{"alias_kind":"pith_short_16","alias_value":"QOYIUN5KIPTACQV5","created_at":"2026-07-05T07:33:51Z"},{"alias_kind":"pith_short_8","alias_value":"QOYIUN5K","created_at":"2026-07-05T07:33:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:QOYIUN5KIPTACQV55WEER56BRM","target":"record","payload":{"canonical_record":{"source":{"id":"2305.20089","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-05-31T17:59:26Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"7c16af42831df0645a1cba9422a03091e269724ed5232d98dad5afb3ddca0849","abstract_canon_sha256":"676303d3563559659d28a46634281c95d348663b1307a91ed7d884ed33a4f5cf"},"schema_version":"1.0"},"canonical_sha256":"83b08a37aa43e60142bded8848f7c18b1c90a3c1961a60cfaee7114da302095d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:33:51.470598Z","signature_b64":"lVMy0/p2ogzdI5F6ATT4P6lSErdFkomD48gKhfCB4HmvGUx/WeT3iAsBOAIdMJTQhw4EaSW2G7QFtbj8mmhBBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"83b08a37aa43e60142bded8848f7c18b1c90a3c1961a60cfaee7114da302095d","last_reissued_at":"2026-07-05T07:33:51.470081Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:33:51.470081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2305.20089","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":"2026-07-05T07:33:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S2Wmwn1ChRN9/WmxyjquuJHKWgGSRprCXnpvc4etjPK+54j3Xv0/EEugDigkjgOQMYIpDD9IhPnm7Vc39EC7Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T10:41:31.980632Z"},"content_sha256":"4e44352ee6e2f0b18656c42af536dd55a33fd4036c6ab35524fb54b7577795be","schema_version":"1.0","event_id":"sha256:4e44352ee6e2f0b18656c42af536dd55a33fd4036c6ab35524fb54b7577795be"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:QOYIUN5KIPTACQV55WEER56BRM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Learning Explicit Contact for Implicit Reconstruction of Hand-held Objects from Monocular Images","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.GR"],"primary_cat":"cs.CV","authors_text":"Hongwen Zhang, Junxing Hu, Mengcheng Li, Yebin Liu, Yunlong Wang, Zerui Chen, Zhenan Sun","submitted_at":"2023-05-31T17:59:26Z","abstract_excerpt":"Reconstructing hand-held objects from monocular RGB images is an appealing yet challenging task. In this task, contacts between hands and objects provide important cues for recovering the 3D geometry of the hand-held objects. Though recent works have employed implicit functions to achieve impressive progress, they ignore formulating contacts in their frameworks, which results in producing less realistic object meshes. In this work, we explore how to model contacts in an explicit way to benefit the implicit reconstruction of hand-held objects. Our method consists of two components: explicit con"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.20089","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/2305.20089/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":"2026-07-05T07:33:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"26SK6+DyTCz3+jlkcr9gAvUpc1q+Xuxv3LaorCsKFzcwrAgkQCSgZNc9T4nh6DArGWlVQf2j/NFcMHWOtN6UAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T10:41:31.981025Z"},"content_sha256":"07fb8a36437b2befb813afe097ea5b93a2d055578917e64e17bf845c01da5cb2","schema_version":"1.0","event_id":"sha256:07fb8a36437b2befb813afe097ea5b93a2d055578917e64e17bf845c01da5cb2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QOYIUN5KIPTACQV55WEER56BRM/bundle.json","state_url":"https://pith.science/pith/QOYIUN5KIPTACQV55WEER56BRM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QOYIUN5KIPTACQV55WEER56BRM/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":"2026-07-06T10:41:31Z","links":{"resolver":"https://pith.science/pith/QOYIUN5KIPTACQV55WEER56BRM","bundle":"https://pith.science/pith/QOYIUN5KIPTACQV55WEER56BRM/bundle.json","state":"https://pith.science/pith/QOYIUN5KIPTACQV55WEER56BRM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QOYIUN5KIPTACQV55WEER56BRM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:QOYIUN5KIPTACQV55WEER56BRM","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":"676303d3563559659d28a46634281c95d348663b1307a91ed7d884ed33a4f5cf","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-05-31T17:59:26Z","title_canon_sha256":"7c16af42831df0645a1cba9422a03091e269724ed5232d98dad5afb3ddca0849"},"schema_version":"1.0","source":{"id":"2305.20089","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.20089","created_at":"2026-07-05T07:33:51Z"},{"alias_kind":"arxiv_version","alias_value":"2305.20089v2","created_at":"2026-07-05T07:33:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.20089","created_at":"2026-07-05T07:33:51Z"},{"alias_kind":"pith_short_12","alias_value":"QOYIUN5KIPTA","created_at":"2026-07-05T07:33:51Z"},{"alias_kind":"pith_short_16","alias_value":"QOYIUN5KIPTACQV5","created_at":"2026-07-05T07:33:51Z"},{"alias_kind":"pith_short_8","alias_value":"QOYIUN5K","created_at":"2026-07-05T07:33:51Z"}],"graph_snapshots":[{"event_id":"sha256:07fb8a36437b2befb813afe097ea5b93a2d055578917e64e17bf845c01da5cb2","target":"graph","created_at":"2026-07-05T07:33:51Z","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/2305.20089/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Reconstructing hand-held objects from monocular RGB images is an appealing yet challenging task. In this task, contacts between hands and objects provide important cues for recovering the 3D geometry of the hand-held objects. Though recent works have employed implicit functions to achieve impressive progress, they ignore formulating contacts in their frameworks, which results in producing less realistic object meshes. In this work, we explore how to model contacts in an explicit way to benefit the implicit reconstruction of hand-held objects. Our method consists of two components: explicit con","authors_text":"Hongwen Zhang, Junxing Hu, Mengcheng Li, Yebin Liu, Yunlong Wang, Zerui Chen, Zhenan Sun","cross_cats":["cs.GR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-05-31T17:59:26Z","title":"Learning Explicit Contact for Implicit Reconstruction of Hand-held Objects from Monocular Images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.20089","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":"sha256:4e44352ee6e2f0b18656c42af536dd55a33fd4036c6ab35524fb54b7577795be","target":"record","created_at":"2026-07-05T07:33:51Z","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":"676303d3563559659d28a46634281c95d348663b1307a91ed7d884ed33a4f5cf","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-05-31T17:59:26Z","title_canon_sha256":"7c16af42831df0645a1cba9422a03091e269724ed5232d98dad5afb3ddca0849"},"schema_version":"1.0","source":{"id":"2305.20089","kind":"arxiv","version":2}},"canonical_sha256":"83b08a37aa43e60142bded8848f7c18b1c90a3c1961a60cfaee7114da302095d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"83b08a37aa43e60142bded8848f7c18b1c90a3c1961a60cfaee7114da302095d","first_computed_at":"2026-07-05T07:33:51.470081Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:33:51.470081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lVMy0/p2ogzdI5F6ATT4P6lSErdFkomD48gKhfCB4HmvGUx/WeT3iAsBOAIdMJTQhw4EaSW2G7QFtbj8mmhBBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:33:51.470598Z","signed_message":"canonical_sha256_bytes"},"source_id":"2305.20089","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e44352ee6e2f0b18656c42af536dd55a33fd4036c6ab35524fb54b7577795be","sha256:07fb8a36437b2befb813afe097ea5b93a2d055578917e64e17bf845c01da5cb2"],"state_sha256":"3c16e65adb6b7d6fcf824f7c3e6fcf91facf0ab7a1bda4ce2e987f157dd08410"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0VTrNIRA8zatqvORr2lsGlRmfpYppXAjsB4Lso/sGp/kOh0ztBy0Y67O2rmLEAGthA0XX6A606H5E144dgG/CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T10:41:31.982948Z","bundle_sha256":"011ae2b1911e27f079ab84be3ae7110768216ee9762b3dc3e137a56540c6f750"}}