{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:WFUC5ZD7JUV5VXKZDT2CLZ3KRD","short_pith_number":"pith:WFUC5ZD7","canonical_record":{"source":{"id":"1907.01840","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2019-07-03T10:36:17Z","cross_cats_sorted":["cs.NA"],"title_canon_sha256":"93affda8a2560410fd6f969d22d77908fa325a2dd66bed3519c7434f986e0913","abstract_canon_sha256":"ac235851b067441a0bf340bd617b1672c75f686405d4adf65fa29084ff766267"},"schema_version":"1.0"},"canonical_sha256":"b1682ee47f4d2bdadd591cf425e76a88e3cc4cff599c535a49d0e35c246f9a8f","source":{"kind":"arxiv","id":"1907.01840","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.01840","created_at":"2026-05-17T23:41:34Z"},{"alias_kind":"arxiv_version","alias_value":"1907.01840v1","created_at":"2026-05-17T23:41:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.01840","created_at":"2026-05-17T23:41:34Z"},{"alias_kind":"pith_short_12","alias_value":"WFUC5ZD7JUV5","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"WFUC5ZD7JUV5VXKZ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"WFUC5ZD7","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:WFUC5ZD7JUV5VXKZDT2CLZ3KRD","target":"record","payload":{"canonical_record":{"source":{"id":"1907.01840","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2019-07-03T10:36:17Z","cross_cats_sorted":["cs.NA"],"title_canon_sha256":"93affda8a2560410fd6f969d22d77908fa325a2dd66bed3519c7434f986e0913","abstract_canon_sha256":"ac235851b067441a0bf340bd617b1672c75f686405d4adf65fa29084ff766267"},"schema_version":"1.0"},"canonical_sha256":"b1682ee47f4d2bdadd591cf425e76a88e3cc4cff599c535a49d0e35c246f9a8f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:41:34.856265Z","signature_b64":"E0Us1tSolJ78AbSCkxRYZ2iYC4/3I+Qanzk9TdCsDyrIwgjGI0Yry2fsXU8LOht7iDczGYn4ANFlwMGawyGiDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b1682ee47f4d2bdadd591cf425e76a88e3cc4cff599c535a49d0e35c246f9a8f","last_reissued_at":"2026-05-17T23:41:34.855644Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:41:34.855644Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.01840","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:41:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+oPHRsbuIb/nKd5LgkCkxbQagAFq127R0e32wmQSaYqDYtfZ09YZRn4tOXTj/P93epjW28ppW7UJdDdhGtQ2AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T23:50:12.962956Z"},"content_sha256":"a9d4d7389e67e34215ee1cfa5b1a06a52bd6b87bf14b54129cd65355815a76e8","schema_version":"1.0","event_id":"sha256:a9d4d7389e67e34215ee1cfa5b1a06a52bd6b87bf14b54129cd65355815a76e8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:WFUC5ZD7JUV5VXKZDT2CLZ3KRD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Variational Model Dedicated to Joint Segmentation, Registration and Atlas Generation for Shape Analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NA"],"primary_cat":"math.NA","authors_text":"Alistair Forbes, Carola Sch\\\"onlieb, Carole Le Guyader, Fabien Bonardi, John Aston, Marina Romanchikova, No\\'emie Debroux","submitted_at":"2019-07-03T10:36:17Z","abstract_excerpt":"In medical image analysis, constructing an atlas, i.e. a mean representative of an ensemble of images, is a critical task for practitioners to estimate variability of shapes inside a population, and to characterise and understand how structural shape changes have an impact on health. This involves identifying significant shape constituents of a set of images, a process called segmentation, and mapping this group of images to an unknown mean image, a task called registration, making a statistical analysis of the image population possible. To achieve this goal, we propose treating these operatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.01840","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":""},"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":"2026-05-17T23:41:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PMlBXa0Mk4Eldaheu30vfrRqn3rmECBwZHKNthciO7lCQifKO6k5dZz8Vlrxy4Ki+KlwcttDPtcPrDkETcXXCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T23:50:12.963295Z"},"content_sha256":"ccee04c5dcf040b4c5e9f12bcc0d73f7ee3f10f9d3b1b5b711e7b96264985023","schema_version":"1.0","event_id":"sha256:ccee04c5dcf040b4c5e9f12bcc0d73f7ee3f10f9d3b1b5b711e7b96264985023"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WFUC5ZD7JUV5VXKZDT2CLZ3KRD/bundle.json","state_url":"https://pith.science/pith/WFUC5ZD7JUV5VXKZDT2CLZ3KRD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WFUC5ZD7JUV5VXKZDT2CLZ3KRD/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":"2026-06-26T23:50:12Z","links":{"resolver":"https://pith.science/pith/WFUC5ZD7JUV5VXKZDT2CLZ3KRD","bundle":"https://pith.science/pith/WFUC5ZD7JUV5VXKZDT2CLZ3KRD/bundle.json","state":"https://pith.science/pith/WFUC5ZD7JUV5VXKZDT2CLZ3KRD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WFUC5ZD7JUV5VXKZDT2CLZ3KRD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:WFUC5ZD7JUV5VXKZDT2CLZ3KRD","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":"ac235851b067441a0bf340bd617b1672c75f686405d4adf65fa29084ff766267","cross_cats_sorted":["cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2019-07-03T10:36:17Z","title_canon_sha256":"93affda8a2560410fd6f969d22d77908fa325a2dd66bed3519c7434f986e0913"},"schema_version":"1.0","source":{"id":"1907.01840","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.01840","created_at":"2026-05-17T23:41:34Z"},{"alias_kind":"arxiv_version","alias_value":"1907.01840v1","created_at":"2026-05-17T23:41:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.01840","created_at":"2026-05-17T23:41:34Z"},{"alias_kind":"pith_short_12","alias_value":"WFUC5ZD7JUV5","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"WFUC5ZD7JUV5VXKZ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"WFUC5ZD7","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:ccee04c5dcf040b4c5e9f12bcc0d73f7ee3f10f9d3b1b5b711e7b96264985023","target":"graph","created_at":"2026-05-17T23:41:34Z","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"},"paper":{"abstract_excerpt":"In medical image analysis, constructing an atlas, i.e. a mean representative of an ensemble of images, is a critical task for practitioners to estimate variability of shapes inside a population, and to characterise and understand how structural shape changes have an impact on health. This involves identifying significant shape constituents of a set of images, a process called segmentation, and mapping this group of images to an unknown mean image, a task called registration, making a statistical analysis of the image population possible. To achieve this goal, we propose treating these operatio","authors_text":"Alistair Forbes, Carola Sch\\\"onlieb, Carole Le Guyader, Fabien Bonardi, John Aston, Marina Romanchikova, No\\'emie Debroux","cross_cats":["cs.NA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2019-07-03T10:36:17Z","title":"A Variational Model Dedicated to Joint Segmentation, Registration and Atlas Generation for Shape Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.01840","kind":"arxiv","version":1},"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:a9d4d7389e67e34215ee1cfa5b1a06a52bd6b87bf14b54129cd65355815a76e8","target":"record","created_at":"2026-05-17T23:41:34Z","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":"ac235851b067441a0bf340bd617b1672c75f686405d4adf65fa29084ff766267","cross_cats_sorted":["cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2019-07-03T10:36:17Z","title_canon_sha256":"93affda8a2560410fd6f969d22d77908fa325a2dd66bed3519c7434f986e0913"},"schema_version":"1.0","source":{"id":"1907.01840","kind":"arxiv","version":1}},"canonical_sha256":"b1682ee47f4d2bdadd591cf425e76a88e3cc4cff599c535a49d0e35c246f9a8f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b1682ee47f4d2bdadd591cf425e76a88e3cc4cff599c535a49d0e35c246f9a8f","first_computed_at":"2026-05-17T23:41:34.855644Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:34.855644Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E0Us1tSolJ78AbSCkxRYZ2iYC4/3I+Qanzk9TdCsDyrIwgjGI0Yry2fsXU8LOht7iDczGYn4ANFlwMGawyGiDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:34.856265Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.01840","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a9d4d7389e67e34215ee1cfa5b1a06a52bd6b87bf14b54129cd65355815a76e8","sha256:ccee04c5dcf040b4c5e9f12bcc0d73f7ee3f10f9d3b1b5b711e7b96264985023"],"state_sha256":"4e2f280838a3d5d49fccc8ecbc1b9939d48fa648921353c907e608836499f5a4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kht+D4VLnNNc/WaThbo2BU6oRD7L3IC8dK9DfqbLow09TOoF0V5mQdQEnjIV6aYJXJhfMIolzXarJDIx4luABg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T23:50:12.965194Z","bundle_sha256":"c4b6447fcc138c9c3a96984e201d7e2e16e095092c5e822a8b8f5c7d84bb1bb4"}}