{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:6ME63KL7J6P6APMIGOZOO3PPMJ","short_pith_number":"pith:6ME63KL7","schema_version":"1.0","canonical_sha256":"f309eda97f4f9fe03d8833b2e76def62766735602c5d13abc085187379af6fb1","source":{"kind":"arxiv","id":"2606.04593","version":1},"attestation_state":"computed","paper":{"title":"4D Reconstruction from Sparse Dynamic Cameras","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Eisuke Takeuchi, Kazuki Ozeki, Kazumi Fukuda, Ryosuke Sawata, Shun Kenney, Takuya Narihira, Yoshimitsu Aoki, Yuki Mitsufuji, Yuto Shibata","submitted_at":"2026-06-03T08:31:43Z","abstract_excerpt":"Although dynamic 3D (i.e., 4D) reconstruction from a monocular dynamic camera has recently advanced, it remains fundamentally limited by depth ambiguity. In this paper, we focus on an alternative practical way, i.e., sparse dynamic camera setup, where a handful of independently moving cameras capture the same subjects. While keeping capture costs low, this setup introduces multi-view constraints and remains practical for real-world video production such as sports, concerts, and TV shows. Despite its potential, our experiments show that naive extensions of existing monocular or dense-fixed came"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2606.04593","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-06-03T08:31:43Z","cross_cats_sorted":[],"title_canon_sha256":"c665a5b2eeafc1616d20a5090a7ee8ec21c9f26bf82c08f5b2d943a739298b1a","abstract_canon_sha256":"c0e66d8595fa08bb11fa866844b31157978a9660b0919646fccafddbbfb6eeeb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-04T01:09:20.254955Z","signature_b64":"tFRj24IQyUi8sjg+XsO/+ov6TxNsjaDa2tzljciITJNJ7unuh4WL57zHWZp/YdeWwd/9imcUVEnf3acedP//CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f309eda97f4f9fe03d8833b2e76def62766735602c5d13abc085187379af6fb1","last_reissued_at":"2026-06-04T01:09:20.254430Z","signature_status":"signed_v1","first_computed_at":"2026-06-04T01:09:20.254430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"4D Reconstruction from Sparse Dynamic Cameras","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Eisuke Takeuchi, Kazuki Ozeki, Kazumi Fukuda, Ryosuke Sawata, Shun Kenney, Takuya Narihira, Yoshimitsu Aoki, Yuki Mitsufuji, Yuto Shibata","submitted_at":"2026-06-03T08:31:43Z","abstract_excerpt":"Although dynamic 3D (i.e., 4D) reconstruction from a monocular dynamic camera has recently advanced, it remains fundamentally limited by depth ambiguity. In this paper, we focus on an alternative practical way, i.e., sparse dynamic camera setup, where a handful of independently moving cameras capture the same subjects. While keeping capture costs low, this setup introduces multi-view constraints and remains practical for real-world video production such as sports, concerts, and TV shows. Despite its potential, our experiments show that naive extensions of existing monocular or dense-fixed came"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.04593","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/2606.04593/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2606.04593","created_at":"2026-06-04T01:09:20.254507+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.04593v1","created_at":"2026-06-04T01:09:20.254507+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.04593","created_at":"2026-06-04T01:09:20.254507+00:00"},{"alias_kind":"pith_short_12","alias_value":"6ME63KL7J6P6","created_at":"2026-06-04T01:09:20.254507+00:00"},{"alias_kind":"pith_short_16","alias_value":"6ME63KL7J6P6APMI","created_at":"2026-06-04T01:09:20.254507+00:00"},{"alias_kind":"pith_short_8","alias_value":"6ME63KL7","created_at":"2026-06-04T01:09:20.254507+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/6ME63KL7J6P6APMIGOZOO3PPMJ","json":"https://pith.science/pith/6ME63KL7J6P6APMIGOZOO3PPMJ.json","graph_json":"https://pith.science/api/pith-number/6ME63KL7J6P6APMIGOZOO3PPMJ/graph.json","events_json":"https://pith.science/api/pith-number/6ME63KL7J6P6APMIGOZOO3PPMJ/events.json","paper":"https://pith.science/paper/6ME63KL7"},"agent_actions":{"view_html":"https://pith.science/pith/6ME63KL7J6P6APMIGOZOO3PPMJ","download_json":"https://pith.science/pith/6ME63KL7J6P6APMIGOZOO3PPMJ.json","view_paper":"https://pith.science/paper/6ME63KL7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.04593&json=true","fetch_graph":"https://pith.science/api/pith-number/6ME63KL7J6P6APMIGOZOO3PPMJ/graph.json","fetch_events":"https://pith.science/api/pith-number/6ME63KL7J6P6APMIGOZOO3PPMJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6ME63KL7J6P6APMIGOZOO3PPMJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6ME63KL7J6P6APMIGOZOO3PPMJ/action/storage_attestation","attest_author":"https://pith.science/pith/6ME63KL7J6P6APMIGOZOO3PPMJ/action/author_attestation","sign_citation":"https://pith.science/pith/6ME63KL7J6P6APMIGOZOO3PPMJ/action/citation_signature","submit_replication":"https://pith.science/pith/6ME63KL7J6P6APMIGOZOO3PPMJ/action/replication_record"}},"created_at":"2026-06-04T01:09:20.254507+00:00","updated_at":"2026-06-04T01:09:20.254507+00:00"}