{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:WJPUJVN6PLP4FWEBA7YXRNGR2G","short_pith_number":"pith:WJPUJVN6","canonical_record":{"source":{"id":"1704.05906","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2017-04-19T19:29:48Z","cross_cats_sorted":["math.NA"],"title_canon_sha256":"a85c92dbf83397282ddb9f795b2350055eba6594d57ad712bda9872b03d1d611","abstract_canon_sha256":"917294213a0aa9d6bcf0bdde9d5c1e21c6cf1df46a0c80586238adeb4472853a"},"schema_version":"1.0"},"canonical_sha256":"b25f44d5be7adfc2d88107f178b4d1d1b0a899c3989600a92a6485f780341483","source":{"kind":"arxiv","id":"1704.05906","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.05906","created_at":"2026-05-18T00:46:03Z"},{"alias_kind":"arxiv_version","alias_value":"1704.05906v1","created_at":"2026-05-18T00:46:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.05906","created_at":"2026-05-18T00:46:03Z"},{"alias_kind":"pith_short_12","alias_value":"WJPUJVN6PLP4","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WJPUJVN6PLP4FWEB","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WJPUJVN6","created_at":"2026-05-18T12:31:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:WJPUJVN6PLP4FWEBA7YXRNGR2G","target":"record","payload":{"canonical_record":{"source":{"id":"1704.05906","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2017-04-19T19:29:48Z","cross_cats_sorted":["math.NA"],"title_canon_sha256":"a85c92dbf83397282ddb9f795b2350055eba6594d57ad712bda9872b03d1d611","abstract_canon_sha256":"917294213a0aa9d6bcf0bdde9d5c1e21c6cf1df46a0c80586238adeb4472853a"},"schema_version":"1.0"},"canonical_sha256":"b25f44d5be7adfc2d88107f178b4d1d1b0a899c3989600a92a6485f780341483","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:46:03.799465Z","signature_b64":"60QU4Nh0GWS9rIhQuiVhK+WzqfQ8Lja9jZkWeN/JGzCmZVSaxs1EvpRZDthUYgKgyGsq2KYiLF28ytz0cHVTAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b25f44d5be7adfc2d88107f178b4d1d1b0a899c3989600a92a6485f780341483","last_reissued_at":"2026-05-18T00:46:03.799014Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:46:03.799014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.05906","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":"2026-05-18T00:46:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qQgc4eLtPOGZXa/L+3p3RLFhdhBPNHj9h4spCdRCVvj0zFMEp2DQeFi/ugt5vScLxoJyG39eH96KvDz8cBUuCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T04:46:03.700970Z"},"content_sha256":"5324391fb602c86e26555e254a8cce202969097da0f563b9653571c6be8659d2","schema_version":"1.0","event_id":"sha256:5324391fb602c86e26555e254a8cce202969097da0f563b9653571c6be8659d2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:WJPUJVN6PLP4FWEBA7YXRNGR2G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A fast method for the detection of vascular structure in images, based on the continuous wavelet transform with the Morlet wavelet having a low central frequency","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.NA"],"primary_cat":"q-bio.QM","authors_text":"Dmitry E. Postnov, Eugene B. Postnikov, Maria O. Tsoy, Maxim A. Kurochkin","submitted_at":"2017-04-19T19:29:48Z","abstract_excerpt":"A manual measurement of blood vessels diameter is a conventional component of routine visual assessment of microcirculation, say, during optical capillaroscopy. However, many modern optical methods for blood flow measurements demand the reliable procedure for a fully automated detection of vessels and estimation of their diameter that is a challenging task. Specifically, if one measure the velocity of red blood cells by means of laser speckle imaging, then visual measurements become impossible, while the velocity-based estimation has their own limitations. One of promising approaches is based "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.05906","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":"2026-05-18T00:46:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fNKwDSvw7FQQWtSix6KNdGiWTewx2Fb1ekh3oH9bul/2VmJYN7t0nLcTYEqCEtzmYnlyFp0eqlU7O2fAXYK4Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T04:46:03.701330Z"},"content_sha256":"84a0ae52428f1bb5420dc32beb4603abeaa1eaa2c0554ce0a61e8a0f66aebda8","schema_version":"1.0","event_id":"sha256:84a0ae52428f1bb5420dc32beb4603abeaa1eaa2c0554ce0a61e8a0f66aebda8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WJPUJVN6PLP4FWEBA7YXRNGR2G/bundle.json","state_url":"https://pith.science/pith/WJPUJVN6PLP4FWEBA7YXRNGR2G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WJPUJVN6PLP4FWEBA7YXRNGR2G/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":"2026-07-02T04:46:03Z","links":{"resolver":"https://pith.science/pith/WJPUJVN6PLP4FWEBA7YXRNGR2G","bundle":"https://pith.science/pith/WJPUJVN6PLP4FWEBA7YXRNGR2G/bundle.json","state":"https://pith.science/pith/WJPUJVN6PLP4FWEBA7YXRNGR2G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WJPUJVN6PLP4FWEBA7YXRNGR2G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:WJPUJVN6PLP4FWEBA7YXRNGR2G","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":"917294213a0aa9d6bcf0bdde9d5c1e21c6cf1df46a0c80586238adeb4472853a","cross_cats_sorted":["math.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2017-04-19T19:29:48Z","title_canon_sha256":"a85c92dbf83397282ddb9f795b2350055eba6594d57ad712bda9872b03d1d611"},"schema_version":"1.0","source":{"id":"1704.05906","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.05906","created_at":"2026-05-18T00:46:03Z"},{"alias_kind":"arxiv_version","alias_value":"1704.05906v1","created_at":"2026-05-18T00:46:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.05906","created_at":"2026-05-18T00:46:03Z"},{"alias_kind":"pith_short_12","alias_value":"WJPUJVN6PLP4","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WJPUJVN6PLP4FWEB","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WJPUJVN6","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:84a0ae52428f1bb5420dc32beb4603abeaa1eaa2c0554ce0a61e8a0f66aebda8","target":"graph","created_at":"2026-05-18T00:46:03Z","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 manual measurement of blood vessels diameter is a conventional component of routine visual assessment of microcirculation, say, during optical capillaroscopy. However, many modern optical methods for blood flow measurements demand the reliable procedure for a fully automated detection of vessels and estimation of their diameter that is a challenging task. Specifically, if one measure the velocity of red blood cells by means of laser speckle imaging, then visual measurements become impossible, while the velocity-based estimation has their own limitations. One of promising approaches is based ","authors_text":"Dmitry E. Postnov, Eugene B. Postnikov, Maria O. Tsoy, Maxim A. Kurochkin","cross_cats":["math.NA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2017-04-19T19:29:48Z","title":"A fast method for the detection of vascular structure in images, based on the continuous wavelet transform with the Morlet wavelet having a low central frequency"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.05906","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":"sha256:5324391fb602c86e26555e254a8cce202969097da0f563b9653571c6be8659d2","target":"record","created_at":"2026-05-18T00:46:03Z","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":"917294213a0aa9d6bcf0bdde9d5c1e21c6cf1df46a0c80586238adeb4472853a","cross_cats_sorted":["math.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2017-04-19T19:29:48Z","title_canon_sha256":"a85c92dbf83397282ddb9f795b2350055eba6594d57ad712bda9872b03d1d611"},"schema_version":"1.0","source":{"id":"1704.05906","kind":"arxiv","version":1}},"canonical_sha256":"b25f44d5be7adfc2d88107f178b4d1d1b0a899c3989600a92a6485f780341483","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b25f44d5be7adfc2d88107f178b4d1d1b0a899c3989600a92a6485f780341483","first_computed_at":"2026-05-18T00:46:03.799014Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:46:03.799014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"60QU4Nh0GWS9rIhQuiVhK+WzqfQ8Lja9jZkWeN/JGzCmZVSaxs1EvpRZDthUYgKgyGsq2KYiLF28ytz0cHVTAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:46:03.799465Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.05906","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5324391fb602c86e26555e254a8cce202969097da0f563b9653571c6be8659d2","sha256:84a0ae52428f1bb5420dc32beb4603abeaa1eaa2c0554ce0a61e8a0f66aebda8"],"state_sha256":"651c72b5d1213eff37de7438e813f84ece8fb859694246e4b7e7f80f8b3ee45e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LcHsmodATI1kywHWuGInjEvJkX35PT/h3MCdrHug3g7nXCPnwqhHja5xSZQzL+g7hPS58us7fQfQJbook7ZCCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T04:46:03.703289Z","bundle_sha256":"ec0208590c6113e3c6e9351bc2c8bd40f9c3d20f7b4c6cd00a5ef123301d3040"}}