{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:HKWVZG5ATNTLJHAHNT5BQB4XI7","short_pith_number":"pith:HKWVZG5A","canonical_record":{"source":{"id":"2301.08317","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-01-19T21:16:36Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"945c317e0ebfdb38367865fe1129ed866764594cc23d02bc254c37c13ff55fc7","abstract_canon_sha256":"e8395d64f865c39cbece2e8a02d5804b08f516a4f732e513211a1b2c5cf7ad38"},"schema_version":"1.0"},"canonical_sha256":"3aad5c9ba09b66b49c076cfa18079747f0197ed948d7d074e98d54e03e6e0d8f","source":{"kind":"arxiv","id":"2301.08317","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.08317","created_at":"2026-07-05T07:08:04Z"},{"alias_kind":"arxiv_version","alias_value":"2301.08317v2","created_at":"2026-07-05T07:08:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.08317","created_at":"2026-07-05T07:08:04Z"},{"alias_kind":"pith_short_12","alias_value":"HKWVZG5ATNTL","created_at":"2026-07-05T07:08:04Z"},{"alias_kind":"pith_short_16","alias_value":"HKWVZG5ATNTLJHAH","created_at":"2026-07-05T07:08:04Z"},{"alias_kind":"pith_short_8","alias_value":"HKWVZG5A","created_at":"2026-07-05T07:08:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:HKWVZG5ATNTLJHAHNT5BQB4XI7","target":"record","payload":{"canonical_record":{"source":{"id":"2301.08317","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-01-19T21:16:36Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"945c317e0ebfdb38367865fe1129ed866764594cc23d02bc254c37c13ff55fc7","abstract_canon_sha256":"e8395d64f865c39cbece2e8a02d5804b08f516a4f732e513211a1b2c5cf7ad38"},"schema_version":"1.0"},"canonical_sha256":"3aad5c9ba09b66b49c076cfa18079747f0197ed948d7d074e98d54e03e6e0d8f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:08:04.846538Z","signature_b64":"j7b2pQKoJ2ilKOQf3v2lchvCMVs1f+VRvOJ3AxefFjinsQp8gS2dF1VTTVZkWvRLv9nknFFA23HCWQsp9y/6Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3aad5c9ba09b66b49c076cfa18079747f0197ed948d7d074e98d54e03e6e0d8f","last_reissued_at":"2026-07-05T07:08:04.846142Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:08:04.846142Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2301.08317","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":"2026-07-05T07:08:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zO594xxNizxgNgl+b68B+jLSOcWnyCmgkhy3N40DdIahZVA7y4LP/ASS2zzMLEOq0PD3xxwo/KRNwEkv4C5MAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T05:41:47.428666Z"},"content_sha256":"0157e820659e63ad897ab95e08e1cb66ba76b17e1e8c6a0056b55cccd99a0cc9","schema_version":"1.0","event_id":"sha256:0157e820659e63ad897ab95e08e1cb66ba76b17e1e8c6a0056b55cccd99a0cc9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:HKWVZG5ATNTLJHAHNT5BQB4XI7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultrasound Plane Pose Regression: Assessing Generalized Pose Coordinates in the Fetal Brain","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CV","authors_text":"Anna L David, Brian Dromey, Chiara Di Vece, Danail Stoyanov, Donald Peebles, Francisco Vasconcelos, Maela Le Lous","submitted_at":"2023-01-19T21:16:36Z","abstract_excerpt":"In obstetric ultrasound (US) scanning, the learner's ability to mentally build a three-dimensional (3D) map of the fetus from a two-dimensional (2D) US image represents a significant challenge in skill acquisition. We aim to build a US plane localization system for 3D visualization, training, and guidance without integrating additional sensors. This work builds on top of our previous work, which predicts the six-dimensional (6D) pose of arbitrarily oriented US planes slicing the fetal brain with respect to a normalized reference frame using a convolutional neural network (CNN) regression netwo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.08317","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/2301.08317/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":"2026-07-05T07:08:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VL6nMSoE3Nnwjqtx23NnyROylhyisj3/ezO6nNcKSrU1ZQkUshre93nI7Kv+hZjq3uZNCx+njIz0PLK+bTIJCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T05:41:47.429201Z"},"content_sha256":"1303a200e906dc239514a4e800d29fed8d92b1e0c9b6747a8e09f10c61964a75","schema_version":"1.0","event_id":"sha256:1303a200e906dc239514a4e800d29fed8d92b1e0c9b6747a8e09f10c61964a75"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HKWVZG5ATNTLJHAHNT5BQB4XI7/bundle.json","state_url":"https://pith.science/pith/HKWVZG5ATNTLJHAHNT5BQB4XI7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HKWVZG5ATNTLJHAHNT5BQB4XI7/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":"2026-08-01T05:41:47Z","links":{"resolver":"https://pith.science/pith/HKWVZG5ATNTLJHAHNT5BQB4XI7","bundle":"https://pith.science/pith/HKWVZG5ATNTLJHAHNT5BQB4XI7/bundle.json","state":"https://pith.science/pith/HKWVZG5ATNTLJHAHNT5BQB4XI7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HKWVZG5ATNTLJHAHNT5BQB4XI7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:HKWVZG5ATNTLJHAHNT5BQB4XI7","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":"e8395d64f865c39cbece2e8a02d5804b08f516a4f732e513211a1b2c5cf7ad38","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-01-19T21:16:36Z","title_canon_sha256":"945c317e0ebfdb38367865fe1129ed866764594cc23d02bc254c37c13ff55fc7"},"schema_version":"1.0","source":{"id":"2301.08317","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.08317","created_at":"2026-07-05T07:08:04Z"},{"alias_kind":"arxiv_version","alias_value":"2301.08317v2","created_at":"2026-07-05T07:08:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.08317","created_at":"2026-07-05T07:08:04Z"},{"alias_kind":"pith_short_12","alias_value":"HKWVZG5ATNTL","created_at":"2026-07-05T07:08:04Z"},{"alias_kind":"pith_short_16","alias_value":"HKWVZG5ATNTLJHAH","created_at":"2026-07-05T07:08:04Z"},{"alias_kind":"pith_short_8","alias_value":"HKWVZG5A","created_at":"2026-07-05T07:08:04Z"}],"graph_snapshots":[{"event_id":"sha256:1303a200e906dc239514a4e800d29fed8d92b1e0c9b6747a8e09f10c61964a75","target":"graph","created_at":"2026-07-05T07:08:04Z","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/2301.08317/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In obstetric ultrasound (US) scanning, the learner's ability to mentally build a three-dimensional (3D) map of the fetus from a two-dimensional (2D) US image represents a significant challenge in skill acquisition. We aim to build a US plane localization system for 3D visualization, training, and guidance without integrating additional sensors. This work builds on top of our previous work, which predicts the six-dimensional (6D) pose of arbitrarily oriented US planes slicing the fetal brain with respect to a normalized reference frame using a convolutional neural network (CNN) regression netwo","authors_text":"Anna L David, Brian Dromey, Chiara Di Vece, Danail Stoyanov, Donald Peebles, Francisco Vasconcelos, Maela Le Lous","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-01-19T21:16:36Z","title":"Ultrasound Plane Pose Regression: Assessing Generalized Pose Coordinates in the Fetal Brain"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.08317","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":"sha256:0157e820659e63ad897ab95e08e1cb66ba76b17e1e8c6a0056b55cccd99a0cc9","target":"record","created_at":"2026-07-05T07:08:04Z","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":"e8395d64f865c39cbece2e8a02d5804b08f516a4f732e513211a1b2c5cf7ad38","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-01-19T21:16:36Z","title_canon_sha256":"945c317e0ebfdb38367865fe1129ed866764594cc23d02bc254c37c13ff55fc7"},"schema_version":"1.0","source":{"id":"2301.08317","kind":"arxiv","version":2}},"canonical_sha256":"3aad5c9ba09b66b49c076cfa18079747f0197ed948d7d074e98d54e03e6e0d8f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3aad5c9ba09b66b49c076cfa18079747f0197ed948d7d074e98d54e03e6e0d8f","first_computed_at":"2026-07-05T07:08:04.846142Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:08:04.846142Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j7b2pQKoJ2ilKOQf3v2lchvCMVs1f+VRvOJ3AxefFjinsQp8gS2dF1VTTVZkWvRLv9nknFFA23HCWQsp9y/6Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:08:04.846538Z","signed_message":"canonical_sha256_bytes"},"source_id":"2301.08317","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0157e820659e63ad897ab95e08e1cb66ba76b17e1e8c6a0056b55cccd99a0cc9","sha256:1303a200e906dc239514a4e800d29fed8d92b1e0c9b6747a8e09f10c61964a75"],"state_sha256":"e9b63ee4a32ddd013e502106ca53e78bf5c771726dc35ec8d9590ebaaf6f3267"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LPuS9E/EQ0xUNoMtmqvnMDCOON1QSUWCdoPIsgCbJH1RZOJ/ANAXUcSjMrOksEx/3t+linfCaASEbV1i/1ZxDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T05:41:47.433597Z","bundle_sha256":"8ce3c9892d7429896889c5c49010b4e02163ad9e25720f8a01895d51d5ba35c4"}}