{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:JJO3MA6TSCP5N2FG3RVRPSVEIW","short_pith_number":"pith:JJO3MA6T","schema_version":"1.0","canonical_sha256":"4a5db603d3909fd6e8a6dc6b17caa4459123a165bc6a7d9623b5391c100af1c2","source":{"kind":"arxiv","id":"1507.05807","version":4},"attestation_state":"computed","paper":{"title":"X-Ray Multimodal Tomography Using Speckle-Vector Tracking","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Eric Ziegler, Sebastien Berujon","submitted_at":"2015-07-21T12:38:54Z","abstract_excerpt":"We demonstrate computerized tomography (CT) reconstructions from absorption, phase and dark-field signals obtained from scans acquired when the x-ray probe light is modulated with speckle. Two different interlaced schemes are proposed to reduce the number of sample exposures. First, the already demonstrated x-ray speckle-vector tracking (XSVT) concept for projection imaging allows the three signal CT reconstructions from multiple images per projection. Second, a modified XSVT approach is shown to provide absorption and phase reconstructions, this time from a single image per angular projection"},"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":"1507.05807","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-07-21T12:38:54Z","cross_cats_sorted":[],"title_canon_sha256":"dd4544edf97b2b56818048c8928c6118fc204ac937c05178811271616555f69f","abstract_canon_sha256":"b69d460b568cff4e110a6ea11c778cd9c1ea6ca739da1ba901d1b33d1a4a44a7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:18.468952Z","signature_b64":"blPFcrYVwENzcY6UvIYF6SwMEkuuow4Lx/aVZdJfrrH9i6t5GInbXyndHdU7GLWVUeYXzFMHurlPU/B/kkMZDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4a5db603d3909fd6e8a6dc6b17caa4459123a165bc6a7d9623b5391c100af1c2","last_reissued_at":"2026-05-18T01:16:18.468342Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:18.468342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"X-Ray Multimodal Tomography Using Speckle-Vector Tracking","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Eric Ziegler, Sebastien Berujon","submitted_at":"2015-07-21T12:38:54Z","abstract_excerpt":"We demonstrate computerized tomography (CT) reconstructions from absorption, phase and dark-field signals obtained from scans acquired when the x-ray probe light is modulated with speckle. Two different interlaced schemes are proposed to reduce the number of sample exposures. First, the already demonstrated x-ray speckle-vector tracking (XSVT) concept for projection imaging allows the three signal CT reconstructions from multiple images per projection. Second, a modified XSVT approach is shown to provide absorption and phase reconstructions, this time from a single image per angular projection"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.05807","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"1507.05807","created_at":"2026-05-18T01:16:18.468463+00:00"},{"alias_kind":"arxiv_version","alias_value":"1507.05807v4","created_at":"2026-05-18T01:16:18.468463+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.05807","created_at":"2026-05-18T01:16:18.468463+00:00"},{"alias_kind":"pith_short_12","alias_value":"JJO3MA6TSCP5","created_at":"2026-05-18T12:29:27.538025+00:00"},{"alias_kind":"pith_short_16","alias_value":"JJO3MA6TSCP5N2FG","created_at":"2026-05-18T12:29:27.538025+00:00"},{"alias_kind":"pith_short_8","alias_value":"JJO3MA6T","created_at":"2026-05-18T12:29:27.538025+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/JJO3MA6TSCP5N2FG3RVRPSVEIW","json":"https://pith.science/pith/JJO3MA6TSCP5N2FG3RVRPSVEIW.json","graph_json":"https://pith.science/api/pith-number/JJO3MA6TSCP5N2FG3RVRPSVEIW/graph.json","events_json":"https://pith.science/api/pith-number/JJO3MA6TSCP5N2FG3RVRPSVEIW/events.json","paper":"https://pith.science/paper/JJO3MA6T"},"agent_actions":{"view_html":"https://pith.science/pith/JJO3MA6TSCP5N2FG3RVRPSVEIW","download_json":"https://pith.science/pith/JJO3MA6TSCP5N2FG3RVRPSVEIW.json","view_paper":"https://pith.science/paper/JJO3MA6T","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1507.05807&json=true","fetch_graph":"https://pith.science/api/pith-number/JJO3MA6TSCP5N2FG3RVRPSVEIW/graph.json","fetch_events":"https://pith.science/api/pith-number/JJO3MA6TSCP5N2FG3RVRPSVEIW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JJO3MA6TSCP5N2FG3RVRPSVEIW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JJO3MA6TSCP5N2FG3RVRPSVEIW/action/storage_attestation","attest_author":"https://pith.science/pith/JJO3MA6TSCP5N2FG3RVRPSVEIW/action/author_attestation","sign_citation":"https://pith.science/pith/JJO3MA6TSCP5N2FG3RVRPSVEIW/action/citation_signature","submit_replication":"https://pith.science/pith/JJO3MA6TSCP5N2FG3RVRPSVEIW/action/replication_record"}},"created_at":"2026-05-18T01:16:18.468463+00:00","updated_at":"2026-05-18T01:16:18.468463+00:00"}