{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:ERSUAOUNVRUPX7KHBUIJYQ6ILC","short_pith_number":"pith:ERSUAOUN","schema_version":"1.0","canonical_sha256":"2465403a8dac68fbfd470d109c43c858a05be3c943415dc315cc8b11e1b694d3","source":{"kind":"arxiv","id":"2005.02903","version":2},"attestation_state":"computed","paper":{"title":"High-Contrast Reflection Tomography with Total-Variation Constraints","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CE","cs.CV","eess.IV"],"primary_cat":"eess.SP","authors_text":"Ajinkya Kadu, Hassan Mansour, Petros T. Boufounos","submitted_at":"2020-05-06T15:26:55Z","abstract_excerpt":"Inverse scattering is the process of estimating the spatial distribution of the scattering potential of an object by measuring the scattered wavefields around it. In this paper, we consider reflection tomography of high contrast objects that commonly occurs in ground-penetrating radar, exploration geophysics, terahertz imaging, ultrasound, and electron microscopy. Unlike conventional transmission tomography, the reflection regime is severely ill-posed since the measured wavefields contain far less spatial frequency information of the target object. We propose a constrained incremental frequenc"},"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":"2005.02903","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-05-06T15:26:55Z","cross_cats_sorted":["cs.CE","cs.CV","eess.IV"],"title_canon_sha256":"cc6fb8d393093e4700d91b0cae154ab8a871e8d7cb3b254032f42a6533e19da6","abstract_canon_sha256":"e7efbcdc8399e6a25f8ffc6e763a4894366f9421643cf9ba33f37e86825e9e1d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:59:55.696775Z","signature_b64":"CnvqTSmXiKMog+BZaSIKc9teHEZvv1mh5hW48x54Q37m8WJu1OgDh4sJPuagJPpQMccUbVSpqHkiVIK34+CnBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2465403a8dac68fbfd470d109c43c858a05be3c943415dc315cc8b11e1b694d3","last_reissued_at":"2026-07-05T01:59:55.696403Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:59:55.696403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"High-Contrast Reflection Tomography with Total-Variation Constraints","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CE","cs.CV","eess.IV"],"primary_cat":"eess.SP","authors_text":"Ajinkya Kadu, Hassan Mansour, Petros T. Boufounos","submitted_at":"2020-05-06T15:26:55Z","abstract_excerpt":"Inverse scattering is the process of estimating the spatial distribution of the scattering potential of an object by measuring the scattered wavefields around it. In this paper, we consider reflection tomography of high contrast objects that commonly occurs in ground-penetrating radar, exploration geophysics, terahertz imaging, ultrasound, and electron microscopy. Unlike conventional transmission tomography, the reflection regime is severely ill-posed since the measured wavefields contain far less spatial frequency information of the target object. We propose a constrained incremental frequenc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.02903","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/2005.02903/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":"2005.02903","created_at":"2026-07-05T01:59:55.696462+00:00"},{"alias_kind":"arxiv_version","alias_value":"2005.02903v2","created_at":"2026-07-05T01:59:55.696462+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.02903","created_at":"2026-07-05T01:59:55.696462+00:00"},{"alias_kind":"pith_short_12","alias_value":"ERSUAOUNVRUP","created_at":"2026-07-05T01:59:55.696462+00:00"},{"alias_kind":"pith_short_16","alias_value":"ERSUAOUNVRUPX7KH","created_at":"2026-07-05T01:59:55.696462+00:00"},{"alias_kind":"pith_short_8","alias_value":"ERSUAOUN","created_at":"2026-07-05T01:59:55.696462+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/ERSUAOUNVRUPX7KHBUIJYQ6ILC","json":"https://pith.science/pith/ERSUAOUNVRUPX7KHBUIJYQ6ILC.json","graph_json":"https://pith.science/api/pith-number/ERSUAOUNVRUPX7KHBUIJYQ6ILC/graph.json","events_json":"https://pith.science/api/pith-number/ERSUAOUNVRUPX7KHBUIJYQ6ILC/events.json","paper":"https://pith.science/paper/ERSUAOUN"},"agent_actions":{"view_html":"https://pith.science/pith/ERSUAOUNVRUPX7KHBUIJYQ6ILC","download_json":"https://pith.science/pith/ERSUAOUNVRUPX7KHBUIJYQ6ILC.json","view_paper":"https://pith.science/paper/ERSUAOUN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2005.02903&json=true","fetch_graph":"https://pith.science/api/pith-number/ERSUAOUNVRUPX7KHBUIJYQ6ILC/graph.json","fetch_events":"https://pith.science/api/pith-number/ERSUAOUNVRUPX7KHBUIJYQ6ILC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ERSUAOUNVRUPX7KHBUIJYQ6ILC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ERSUAOUNVRUPX7KHBUIJYQ6ILC/action/storage_attestation","attest_author":"https://pith.science/pith/ERSUAOUNVRUPX7KHBUIJYQ6ILC/action/author_attestation","sign_citation":"https://pith.science/pith/ERSUAOUNVRUPX7KHBUIJYQ6ILC/action/citation_signature","submit_replication":"https://pith.science/pith/ERSUAOUNVRUPX7KHBUIJYQ6ILC/action/replication_record"}},"created_at":"2026-07-05T01:59:55.696462+00:00","updated_at":"2026-07-05T01:59:55.696462+00:00"}