{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ZWZVRU7XNI6X4MZAGO2HQIGSPO","short_pith_number":"pith:ZWZVRU7X","canonical_record":{"source":{"id":"1812.08882","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-12-20T23:01:30Z","cross_cats_sorted":[],"title_canon_sha256":"bf015dae9997d54ac0347790c11658d1869340581dc940e0626e2366bca33ece","abstract_canon_sha256":"d01d0b2952e4df6d7eaefd9b93b50c9d17f35f46009fd0308bbcc7a0e72ca6b5"},"schema_version":"1.0"},"canonical_sha256":"cdb358d3f76a3d7e332033b47820d27bbfa339e5588f3e2538354033abaf3be3","source":{"kind":"arxiv","id":"1812.08882","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.08882","created_at":"2026-05-17T23:57:46Z"},{"alias_kind":"arxiv_version","alias_value":"1812.08882v1","created_at":"2026-05-17T23:57:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.08882","created_at":"2026-05-17T23:57:46Z"},{"alias_kind":"pith_short_12","alias_value":"ZWZVRU7XNI6X","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZWZVRU7XNI6X4MZA","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZWZVRU7X","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ZWZVRU7XNI6X4MZAGO2HQIGSPO","target":"record","payload":{"canonical_record":{"source":{"id":"1812.08882","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-12-20T23:01:30Z","cross_cats_sorted":[],"title_canon_sha256":"bf015dae9997d54ac0347790c11658d1869340581dc940e0626e2366bca33ece","abstract_canon_sha256":"d01d0b2952e4df6d7eaefd9b93b50c9d17f35f46009fd0308bbcc7a0e72ca6b5"},"schema_version":"1.0"},"canonical_sha256":"cdb358d3f76a3d7e332033b47820d27bbfa339e5588f3e2538354033abaf3be3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:57:46.022101Z","signature_b64":"pXM3y2JZ0kB5NxB/I8mFj/57piB6roZgW5PcHlH5O4T+2ZCr/VWPkBcUQMgGMvWH01+gfwJ7m0VGdNGvzLAEAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cdb358d3f76a3d7e332033b47820d27bbfa339e5588f3e2538354033abaf3be3","last_reissued_at":"2026-05-17T23:57:46.021485Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:57:46.021485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.08882","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":"2026-05-17T23:57:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WJs16Qfxw10JMlc5EzdpaPQPu3HOJja1lvb8Uw1pNd95Vqmj99zQQWd+vQEgplyQX8ADnZIg3Bx5jHiUZmllCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T10:14:31.212871Z"},"content_sha256":"afa10ef2c836bd60377bc5097f6eed623abc3fa9fe0061744c1bf64f7ee9303a","schema_version":"1.0","event_id":"sha256:afa10ef2c836bd60377bc5097f6eed623abc3fa9fe0061744c1bf64f7ee9303a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ZWZVRU7XNI6X4MZAGO2HQIGSPO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Optical Flow-Based Approach for Minimally-Divergent Velocimetry Data Interpolation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Berkay Kanberoglu, David Frakes, Dhritiman Das, Pavan Turaga, Priya Nair","submitted_at":"2018-12-20T23:01:30Z","abstract_excerpt":"Three-dimensional (3D) biomedical image sets are often acquired with in-plane pixel spacings that are far less than the out-of-plane spacings between images. The resultant anisotropy, which can be detrimental in many applications, can be decreased using image interpolation. Optical flow and/or other registration-based interpolators have proven useful in such interpolation roles in the past. When acquired images are comprised of signals that describe the flow velocity of fluids, additional information is available to guide the interpolation process. In this paper, we present an optical-flow bas"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.08882","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":"2026-05-17T23:57:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0Jkx3gCd6Ylf+pq0oepFaN9syNqtKPNX1dqXul3QBSZrwI5hxdLDKP+DNzbBXxQZMAmJX++y7H1qp+mXh52sBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T10:14:31.213222Z"},"content_sha256":"ef171167f84434c7950012af096ac083bf945563f6e7efac0defc6e36e257812","schema_version":"1.0","event_id":"sha256:ef171167f84434c7950012af096ac083bf945563f6e7efac0defc6e36e257812"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZWZVRU7XNI6X4MZAGO2HQIGSPO/bundle.json","state_url":"https://pith.science/pith/ZWZVRU7XNI6X4MZAGO2HQIGSPO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZWZVRU7XNI6X4MZAGO2HQIGSPO/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":"2026-06-07T10:14:31Z","links":{"resolver":"https://pith.science/pith/ZWZVRU7XNI6X4MZAGO2HQIGSPO","bundle":"https://pith.science/pith/ZWZVRU7XNI6X4MZAGO2HQIGSPO/bundle.json","state":"https://pith.science/pith/ZWZVRU7XNI6X4MZAGO2HQIGSPO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZWZVRU7XNI6X4MZAGO2HQIGSPO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZWZVRU7XNI6X4MZAGO2HQIGSPO","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":"d01d0b2952e4df6d7eaefd9b93b50c9d17f35f46009fd0308bbcc7a0e72ca6b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-12-20T23:01:30Z","title_canon_sha256":"bf015dae9997d54ac0347790c11658d1869340581dc940e0626e2366bca33ece"},"schema_version":"1.0","source":{"id":"1812.08882","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.08882","created_at":"2026-05-17T23:57:46Z"},{"alias_kind":"arxiv_version","alias_value":"1812.08882v1","created_at":"2026-05-17T23:57:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.08882","created_at":"2026-05-17T23:57:46Z"},{"alias_kind":"pith_short_12","alias_value":"ZWZVRU7XNI6X","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZWZVRU7XNI6X4MZA","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZWZVRU7X","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:ef171167f84434c7950012af096ac083bf945563f6e7efac0defc6e36e257812","target":"graph","created_at":"2026-05-17T23:57:46Z","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":"Three-dimensional (3D) biomedical image sets are often acquired with in-plane pixel spacings that are far less than the out-of-plane spacings between images. The resultant anisotropy, which can be detrimental in many applications, can be decreased using image interpolation. Optical flow and/or other registration-based interpolators have proven useful in such interpolation roles in the past. When acquired images are comprised of signals that describe the flow velocity of fluids, additional information is available to guide the interpolation process. In this paper, we present an optical-flow bas","authors_text":"Berkay Kanberoglu, David Frakes, Dhritiman Das, Pavan Turaga, Priya Nair","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-12-20T23:01:30Z","title":"An Optical Flow-Based Approach for Minimally-Divergent Velocimetry Data Interpolation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.08882","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:afa10ef2c836bd60377bc5097f6eed623abc3fa9fe0061744c1bf64f7ee9303a","target":"record","created_at":"2026-05-17T23:57:46Z","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":"d01d0b2952e4df6d7eaefd9b93b50c9d17f35f46009fd0308bbcc7a0e72ca6b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-12-20T23:01:30Z","title_canon_sha256":"bf015dae9997d54ac0347790c11658d1869340581dc940e0626e2366bca33ece"},"schema_version":"1.0","source":{"id":"1812.08882","kind":"arxiv","version":1}},"canonical_sha256":"cdb358d3f76a3d7e332033b47820d27bbfa339e5588f3e2538354033abaf3be3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cdb358d3f76a3d7e332033b47820d27bbfa339e5588f3e2538354033abaf3be3","first_computed_at":"2026-05-17T23:57:46.021485Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:57:46.021485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pXM3y2JZ0kB5NxB/I8mFj/57piB6roZgW5PcHlH5O4T+2ZCr/VWPkBcUQMgGMvWH01+gfwJ7m0VGdNGvzLAEAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:57:46.022101Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.08882","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:afa10ef2c836bd60377bc5097f6eed623abc3fa9fe0061744c1bf64f7ee9303a","sha256:ef171167f84434c7950012af096ac083bf945563f6e7efac0defc6e36e257812"],"state_sha256":"974389e85e14c5741970d6a53997628134134db72fb1b8ecad22b28e45dfca38"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/G+2V7v+AwW4k4Lth7yvB6cqPKL3d7HGdGgISptF3iqi8gQrqxvmY+DwsrNOg2rtYfba6iQOyikkod4+nUV1AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T10:14:31.215238Z","bundle_sha256":"27545946e207a090ff7be03fc0410c90a676e364fc584a71f17a8a3ae3290bf6"}}