{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:E7OVKGBRMJ6TWS4WFHKJYY3QRE","short_pith_number":"pith:E7OVKGBR","canonical_record":{"source":{"id":"1708.00607","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-08-02T05:36:25Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"ffa9fb75bbf781c97200734dccfa18866d9c9a1eee5e03637d066647698bd01e","abstract_canon_sha256":"4d0920848fa43933ca2b2973e2163aedd19319a3964eaae03672af0ee76b74eb"},"schema_version":"1.0"},"canonical_sha256":"27dd551831627d3b4b9629d49c6370892143cb241f530de2b5843efc5431a98e","source":{"kind":"arxiv","id":"1708.00607","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.00607","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"arxiv_version","alias_value":"1708.00607v2","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.00607","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"pith_short_12","alias_value":"E7OVKGBRMJ6T","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"E7OVKGBRMJ6TWS4W","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"E7OVKGBR","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:E7OVKGBRMJ6TWS4WFHKJYY3QRE","target":"record","payload":{"canonical_record":{"source":{"id":"1708.00607","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-08-02T05:36:25Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"ffa9fb75bbf781c97200734dccfa18866d9c9a1eee5e03637d066647698bd01e","abstract_canon_sha256":"4d0920848fa43933ca2b2973e2163aedd19319a3964eaae03672af0ee76b74eb"},"schema_version":"1.0"},"canonical_sha256":"27dd551831627d3b4b9629d49c6370892143cb241f530de2b5843efc5431a98e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:10.413027Z","signature_b64":"42FBJNXmHUWlznwygluUlvx+tFM9COJS2NkN9N+/1X/vbLucdoUzRF56AUeNwf10U3h42WmbqIO3pcQhcpaPBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"27dd551831627d3b4b9629d49c6370892143cb241f530de2b5843efc5431a98e","last_reissued_at":"2026-05-17T23:44:10.412408Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:10.412408Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.00607","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":"2026-05-17T23:44:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EqsxsdphONATRx4vXe7B65kruH+ZwZ2upgAHTvCnv+PgnXn+xiN1UFf/KYy7/FcK3fCzz35Nk++4HX6rV8JkDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:55:44.214038Z"},"content_sha256":"11634dadb9e1e5a34b41dfc43214767754b7f781431c35ec2fcd07932ecc2ad4","schema_version":"1.0","event_id":"sha256:11634dadb9e1e5a34b41dfc43214767754b7f781431c35ec2fcd07932ecc2ad4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:E7OVKGBRMJ6TWS4WFHKJYY3QRE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CT sinogram-consistency learning for metal-induced beam hardening correction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"physics.med-ph","authors_text":"Hwa Pyung Kim, Hyung Suk Park, Jin Keun Seo, Sung Min Lee","submitted_at":"2017-08-02T05:36:25Z","abstract_excerpt":"This paper proposes a sinogram consistency learning method to deal with beam-hardening related artifacts in polychromatic computerized tomography (CT). The presence of highly attenuating materials in the scan field causes an inconsistent sinogram, that does not match the range space of the Radon transform. When the mismatched data are entered into the range space during CT reconstruction, streaking and shading artifacts are generated owing to the inherent nature of the inverse Radon transform. The proposed learning method aims to repair inconsistent sinograms by removing the primary metal-indu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.00607","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":""},"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":"2026-05-17T23:44:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mlb/V0tlas5vL+M+ar98+ZIrNeDdVb8DP1DRITqSmTT8oyTTbyb3cgjGXPKj95tl4Mu8ExuptjKSAQkrIgyACQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:55:44.214671Z"},"content_sha256":"ce90b5cf09ca848fa4a33cabc09cb690ba6d197f0ac013263dae2b8ee552be8f","schema_version":"1.0","event_id":"sha256:ce90b5cf09ca848fa4a33cabc09cb690ba6d197f0ac013263dae2b8ee552be8f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E7OVKGBRMJ6TWS4WFHKJYY3QRE/bundle.json","state_url":"https://pith.science/pith/E7OVKGBRMJ6TWS4WFHKJYY3QRE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E7OVKGBRMJ6TWS4WFHKJYY3QRE/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":"2026-06-03T02:55:44Z","links":{"resolver":"https://pith.science/pith/E7OVKGBRMJ6TWS4WFHKJYY3QRE","bundle":"https://pith.science/pith/E7OVKGBRMJ6TWS4WFHKJYY3QRE/bundle.json","state":"https://pith.science/pith/E7OVKGBRMJ6TWS4WFHKJYY3QRE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E7OVKGBRMJ6TWS4WFHKJYY3QRE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:E7OVKGBRMJ6TWS4WFHKJYY3QRE","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":"4d0920848fa43933ca2b2973e2163aedd19319a3964eaae03672af0ee76b74eb","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-08-02T05:36:25Z","title_canon_sha256":"ffa9fb75bbf781c97200734dccfa18866d9c9a1eee5e03637d066647698bd01e"},"schema_version":"1.0","source":{"id":"1708.00607","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.00607","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"arxiv_version","alias_value":"1708.00607v2","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.00607","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"pith_short_12","alias_value":"E7OVKGBRMJ6T","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"E7OVKGBRMJ6TWS4W","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"E7OVKGBR","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:ce90b5cf09ca848fa4a33cabc09cb690ba6d197f0ac013263dae2b8ee552be8f","target":"graph","created_at":"2026-05-17T23:44:10Z","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":"This paper proposes a sinogram consistency learning method to deal with beam-hardening related artifacts in polychromatic computerized tomography (CT). The presence of highly attenuating materials in the scan field causes an inconsistent sinogram, that does not match the range space of the Radon transform. When the mismatched data are entered into the range space during CT reconstruction, streaking and shading artifacts are generated owing to the inherent nature of the inverse Radon transform. The proposed learning method aims to repair inconsistent sinograms by removing the primary metal-indu","authors_text":"Hwa Pyung Kim, Hyung Suk Park, Jin Keun Seo, Sung Min Lee","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-08-02T05:36:25Z","title":"CT sinogram-consistency learning for metal-induced beam hardening correction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.00607","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":"sha256:11634dadb9e1e5a34b41dfc43214767754b7f781431c35ec2fcd07932ecc2ad4","target":"record","created_at":"2026-05-17T23:44:10Z","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":"4d0920848fa43933ca2b2973e2163aedd19319a3964eaae03672af0ee76b74eb","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-08-02T05:36:25Z","title_canon_sha256":"ffa9fb75bbf781c97200734dccfa18866d9c9a1eee5e03637d066647698bd01e"},"schema_version":"1.0","source":{"id":"1708.00607","kind":"arxiv","version":2}},"canonical_sha256":"27dd551831627d3b4b9629d49c6370892143cb241f530de2b5843efc5431a98e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"27dd551831627d3b4b9629d49c6370892143cb241f530de2b5843efc5431a98e","first_computed_at":"2026-05-17T23:44:10.412408Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:10.412408Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"42FBJNXmHUWlznwygluUlvx+tFM9COJS2NkN9N+/1X/vbLucdoUzRF56AUeNwf10U3h42WmbqIO3pcQhcpaPBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:10.413027Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.00607","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:11634dadb9e1e5a34b41dfc43214767754b7f781431c35ec2fcd07932ecc2ad4","sha256:ce90b5cf09ca848fa4a33cabc09cb690ba6d197f0ac013263dae2b8ee552be8f"],"state_sha256":"00ab65aa4903861c1b705e8c243e74138d998549b17504227697c5326636edbb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GyClZJP8PjxsdJ45Oei2Wh/H/5bvJ7pNKizujq4pDrx2e1GFrOHfzgMpHhJhvK52QVXs9j4bU78+qOocAkVMDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T02:55:44.216759Z","bundle_sha256":"426989a15f709c1ac553abfa707c5543e51461c56345d5f329d6cfb44e8898da"}}