{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:MLMLAVGQD6X2U45M2K7KQV2ZIT","short_pith_number":"pith:MLMLAVGQ","canonical_record":{"source":{"id":"1610.09498","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-10-29T12:38:41Z","cross_cats_sorted":[],"title_canon_sha256":"d7c01c7ce3508138223fdd9ef8cd0c5820a8cc4803158e14d1500781c04c84f6","abstract_canon_sha256":"0111fb1bb58c6b449db960ffea238a3fecfe8a8f2c74598efe61a476bbcbe8ff"},"schema_version":"1.0"},"canonical_sha256":"62d8b054d01fafaa73acd2bea8575944c4f58f45dd95c744e385e18e498280f5","source":{"kind":"arxiv","id":"1610.09498","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.09498","created_at":"2026-05-18T01:00:51Z"},{"alias_kind":"arxiv_version","alias_value":"1610.09498v1","created_at":"2026-05-18T01:00:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.09498","created_at":"2026-05-18T01:00:51Z"},{"alias_kind":"pith_short_12","alias_value":"MLMLAVGQD6X2","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MLMLAVGQD6X2U45M","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MLMLAVGQ","created_at":"2026-05-18T12:30:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:MLMLAVGQD6X2U45M2K7KQV2ZIT","target":"record","payload":{"canonical_record":{"source":{"id":"1610.09498","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-10-29T12:38:41Z","cross_cats_sorted":[],"title_canon_sha256":"d7c01c7ce3508138223fdd9ef8cd0c5820a8cc4803158e14d1500781c04c84f6","abstract_canon_sha256":"0111fb1bb58c6b449db960ffea238a3fecfe8a8f2c74598efe61a476bbcbe8ff"},"schema_version":"1.0"},"canonical_sha256":"62d8b054d01fafaa73acd2bea8575944c4f58f45dd95c744e385e18e498280f5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:00:51.838780Z","signature_b64":"W2t+990B9gZOr8h1qkCIrY0iX+dia73h2/qgQyc5+GyahqILnvlQreqQ1DK7UcR/JjW3RT/jHfyGPOZ2ZvDKAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62d8b054d01fafaa73acd2bea8575944c4f58f45dd95c744e385e18e498280f5","last_reissued_at":"2026-05-18T01:00:51.838296Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:00:51.838296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1610.09498","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":"2026-05-18T01:00:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M9ER6bnLUWkoxYhGzm/NkbcA7mlMadawQIc1oOqBwxHUhVKV+WeX0kTBjBpTgMdzZODuVbLT4QU8xQ//s8p6DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T13:27:24.709614Z"},"content_sha256":"21e2c2089864689ea27011611991dd1446d249f7824c7b8c008434aab6fbdf06","schema_version":"1.0","event_id":"sha256:21e2c2089864689ea27011611991dd1446d249f7824c7b8c008434aab6fbdf06"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:MLMLAVGQD6X2U45M2K7KQV2ZIT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A MAP-MRF filter for phase-sensitive coil combination in autocalibrating partially parallel susceptibility weighted MRI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Joseph Suresh Paul, Sreekanth Madhusoodhanan","submitted_at":"2016-10-29T12:38:41Z","abstract_excerpt":"A statistical approach for combination of channel phases is developed for optimizing the Contrast-to-Noise Ratio (CNR) in Susceptibility Weighted Images (SWI) acquired using autocalibrating partially parallel techniques. The unwrapped phase images of each coil are filtered using local random field based probabilistic weights, derived using energy functions representative of noisy sensitivity and tissue information pertaining to venous structure in the individual channel phase images. The channel energy functions are obtained as functions of local image intensities, first or second order clique"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.09498","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":"2026-05-18T01:00:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AzLBFxbX0UISDWC3T74ZDvtEE8HcPy4KYRkt3xW1eSWKwEvcD0VVfcEZEPrupzpniL99yzSH5A/VqkDi+6R8Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T13:27:24.709961Z"},"content_sha256":"9a6ec08fd6a2dd4ef5704feea5785b904505f307984e6b72f1c7d81cd508e984","schema_version":"1.0","event_id":"sha256:9a6ec08fd6a2dd4ef5704feea5785b904505f307984e6b72f1c7d81cd508e984"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MLMLAVGQD6X2U45M2K7KQV2ZIT/bundle.json","state_url":"https://pith.science/pith/MLMLAVGQD6X2U45M2K7KQV2ZIT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MLMLAVGQD6X2U45M2K7KQV2ZIT/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":"2026-07-03T13:27:24Z","links":{"resolver":"https://pith.science/pith/MLMLAVGQD6X2U45M2K7KQV2ZIT","bundle":"https://pith.science/pith/MLMLAVGQD6X2U45M2K7KQV2ZIT/bundle.json","state":"https://pith.science/pith/MLMLAVGQD6X2U45M2K7KQV2ZIT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MLMLAVGQD6X2U45M2K7KQV2ZIT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:MLMLAVGQD6X2U45M2K7KQV2ZIT","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":"0111fb1bb58c6b449db960ffea238a3fecfe8a8f2c74598efe61a476bbcbe8ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-10-29T12:38:41Z","title_canon_sha256":"d7c01c7ce3508138223fdd9ef8cd0c5820a8cc4803158e14d1500781c04c84f6"},"schema_version":"1.0","source":{"id":"1610.09498","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.09498","created_at":"2026-05-18T01:00:51Z"},{"alias_kind":"arxiv_version","alias_value":"1610.09498v1","created_at":"2026-05-18T01:00:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.09498","created_at":"2026-05-18T01:00:51Z"},{"alias_kind":"pith_short_12","alias_value":"MLMLAVGQD6X2","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MLMLAVGQD6X2U45M","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MLMLAVGQ","created_at":"2026-05-18T12:30:32Z"}],"graph_snapshots":[{"event_id":"sha256:9a6ec08fd6a2dd4ef5704feea5785b904505f307984e6b72f1c7d81cd508e984","target":"graph","created_at":"2026-05-18T01:00:51Z","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":"A statistical approach for combination of channel phases is developed for optimizing the Contrast-to-Noise Ratio (CNR) in Susceptibility Weighted Images (SWI) acquired using autocalibrating partially parallel techniques. The unwrapped phase images of each coil are filtered using local random field based probabilistic weights, derived using energy functions representative of noisy sensitivity and tissue information pertaining to venous structure in the individual channel phase images. The channel energy functions are obtained as functions of local image intensities, first or second order clique","authors_text":"Joseph Suresh Paul, Sreekanth Madhusoodhanan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-10-29T12:38:41Z","title":"A MAP-MRF filter for phase-sensitive coil combination in autocalibrating partially parallel susceptibility weighted MRI"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.09498","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":"sha256:21e2c2089864689ea27011611991dd1446d249f7824c7b8c008434aab6fbdf06","target":"record","created_at":"2026-05-18T01:00:51Z","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":"0111fb1bb58c6b449db960ffea238a3fecfe8a8f2c74598efe61a476bbcbe8ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-10-29T12:38:41Z","title_canon_sha256":"d7c01c7ce3508138223fdd9ef8cd0c5820a8cc4803158e14d1500781c04c84f6"},"schema_version":"1.0","source":{"id":"1610.09498","kind":"arxiv","version":1}},"canonical_sha256":"62d8b054d01fafaa73acd2bea8575944c4f58f45dd95c744e385e18e498280f5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"62d8b054d01fafaa73acd2bea8575944c4f58f45dd95c744e385e18e498280f5","first_computed_at":"2026-05-18T01:00:51.838296Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:00:51.838296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W2t+990B9gZOr8h1qkCIrY0iX+dia73h2/qgQyc5+GyahqILnvlQreqQ1DK7UcR/JjW3RT/jHfyGPOZ2ZvDKAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:00:51.838780Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.09498","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:21e2c2089864689ea27011611991dd1446d249f7824c7b8c008434aab6fbdf06","sha256:9a6ec08fd6a2dd4ef5704feea5785b904505f307984e6b72f1c7d81cd508e984"],"state_sha256":"3face36dd47be457181a3e61f3290b221c1569296f4f8b714243f063e80ae6de"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0JApO475VcL6KO8rViWaAjJs85aY7b01QDN8aV4Kzr9TArliKpH/OxWgrXrils3ZVSsGvNQ1fbqwcitimmyGAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T13:27:24.711888Z","bundle_sha256":"d04184c8c9d63c9eb4240c4081ef8d6bf0aa3cbb30bbccbc6277eb65faf69e09"}}