{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:F46COQOJ75OK654DDPZQGDTKLG","short_pith_number":"pith:F46COQOJ","canonical_record":{"source":{"id":"2607.07580","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-08T16:04:05Z","cross_cats_sorted":[],"title_canon_sha256":"7f511e0c62e7341beec29a5dc3a73ab0c950b4191cddd703eb5992a599345994","abstract_canon_sha256":"449fed8def4e575294e5d350f16ab3ed98ca5cba971c4f102e8c5a2052878679"},"schema_version":"1.0"},"canonical_sha256":"2f3c2741c9ff5caf77831bf3030e6a59bc55bff6f53c52bc4c0f14470c1a8536","source":{"kind":"arxiv","id":"2607.07580","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.07580","created_at":"2026-07-09T01:20:30Z"},{"alias_kind":"arxiv_version","alias_value":"2607.07580v1","created_at":"2026-07-09T01:20:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.07580","created_at":"2026-07-09T01:20:30Z"},{"alias_kind":"pith_short_12","alias_value":"F46COQOJ75OK","created_at":"2026-07-09T01:20:30Z"},{"alias_kind":"pith_short_16","alias_value":"F46COQOJ75OK654D","created_at":"2026-07-09T01:20:30Z"},{"alias_kind":"pith_short_8","alias_value":"F46COQOJ","created_at":"2026-07-09T01:20:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:F46COQOJ75OK654DDPZQGDTKLG","target":"record","payload":{"canonical_record":{"source":{"id":"2607.07580","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-08T16:04:05Z","cross_cats_sorted":[],"title_canon_sha256":"7f511e0c62e7341beec29a5dc3a73ab0c950b4191cddd703eb5992a599345994","abstract_canon_sha256":"449fed8def4e575294e5d350f16ab3ed98ca5cba971c4f102e8c5a2052878679"},"schema_version":"1.0"},"canonical_sha256":"2f3c2741c9ff5caf77831bf3030e6a59bc55bff6f53c52bc4c0f14470c1a8536","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-09T01:20:30.121098Z","signature_b64":"+U4GmhcwrNo+a6N+2E+3t7BjckNlrrua21gW1SJqFfd7nDQO5PNVojb032cziwAZRQg3LfTlGWyWBRK8dIm0Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2f3c2741c9ff5caf77831bf3030e6a59bc55bff6f53c52bc4c0f14470c1a8536","last_reissued_at":"2026-07-09T01:20:30.120688Z","signature_status":"signed_v1","first_computed_at":"2026-07-09T01:20:30.120688Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.07580","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":"2026-07-09T01:20:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aCPgoU7ft2MFo2QMtoJwYq5NJJiuXBWygXZudZ6tkRhQFxWCodr3zVhNFFsBouA43tHF+JJDExRKGIxuL3ClDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:44:59.530814Z"},"content_sha256":"c4251ff0596d4903704d97146006678f85d53ea221f91d7693596c9f9b1e0013","schema_version":"1.0","event_id":"sha256:c4251ff0596d4903704d97146006678f85d53ea221f91d7693596c9f9b1e0013"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:F46COQOJ75OK654DDPZQGDTKLG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Automatic Echocardiography Segmentation via Transition Probability Correlation for Stable Semantic Extraction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Chuan Chen, Guangquan Zhou, Xinran Chen, Xiyuan Wang","submitted_at":"2026-07-08T16:04:05Z","abstract_excerpt":"While echocardiography is essential for cardiovascular diagnosis, inherent speckle noise and low signal-to-noise ratio often lead to ambiguous semantic features and fragmented boundaries. These limitations significantly hinder the segmentation accuracy of deep learning models in complex clinical cases. Moreover, temporal motion of the heart plays a critical role in recognizing anatomical structures. To address these challenges, we designed a STLSF module which comprises a window-matching-based semantic correction component and a semantics-guided texture enhancement component. By leveraging loc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.07580","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.07580/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":"2026-07-09T01:20:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8trIgkXe8on5Aug8FtP3EmEfcwmXMV4aL+Bamfi42agZLSqlDWRpVpVM5UYCss4YSJf1j0bRMXDfbTbvREp9Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:44:59.531294Z"},"content_sha256":"e1bb04a7820f0f04d9135d66301fdf7c0bd037e6cf24f168429e94d8f7aa8303","schema_version":"1.0","event_id":"sha256:e1bb04a7820f0f04d9135d66301fdf7c0bd037e6cf24f168429e94d8f7aa8303"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F46COQOJ75OK654DDPZQGDTKLG/bundle.json","state_url":"https://pith.science/pith/F46COQOJ75OK654DDPZQGDTKLG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F46COQOJ75OK654DDPZQGDTKLG/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":"2026-08-03T17:44:59Z","links":{"resolver":"https://pith.science/pith/F46COQOJ75OK654DDPZQGDTKLG","bundle":"https://pith.science/pith/F46COQOJ75OK654DDPZQGDTKLG/bundle.json","state":"https://pith.science/pith/F46COQOJ75OK654DDPZQGDTKLG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F46COQOJ75OK654DDPZQGDTKLG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:F46COQOJ75OK654DDPZQGDTKLG","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":"449fed8def4e575294e5d350f16ab3ed98ca5cba971c4f102e8c5a2052878679","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-08T16:04:05Z","title_canon_sha256":"7f511e0c62e7341beec29a5dc3a73ab0c950b4191cddd703eb5992a599345994"},"schema_version":"1.0","source":{"id":"2607.07580","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.07580","created_at":"2026-07-09T01:20:30Z"},{"alias_kind":"arxiv_version","alias_value":"2607.07580v1","created_at":"2026-07-09T01:20:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.07580","created_at":"2026-07-09T01:20:30Z"},{"alias_kind":"pith_short_12","alias_value":"F46COQOJ75OK","created_at":"2026-07-09T01:20:30Z"},{"alias_kind":"pith_short_16","alias_value":"F46COQOJ75OK654D","created_at":"2026-07-09T01:20:30Z"},{"alias_kind":"pith_short_8","alias_value":"F46COQOJ","created_at":"2026-07-09T01:20:30Z"}],"graph_snapshots":[{"event_id":"sha256:e1bb04a7820f0f04d9135d66301fdf7c0bd037e6cf24f168429e94d8f7aa8303","target":"graph","created_at":"2026-07-09T01:20:30Z","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/2607.07580/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"While echocardiography is essential for cardiovascular diagnosis, inherent speckle noise and low signal-to-noise ratio often lead to ambiguous semantic features and fragmented boundaries. These limitations significantly hinder the segmentation accuracy of deep learning models in complex clinical cases. Moreover, temporal motion of the heart plays a critical role in recognizing anatomical structures. To address these challenges, we designed a STLSF module which comprises a window-matching-based semantic correction component and a semantics-guided texture enhancement component. By leveraging loc","authors_text":"Chuan Chen, Guangquan Zhou, Xinran Chen, Xiyuan Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-08T16:04:05Z","title":"Automatic Echocardiography Segmentation via Transition Probability Correlation for Stable Semantic Extraction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.07580","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:c4251ff0596d4903704d97146006678f85d53ea221f91d7693596c9f9b1e0013","target":"record","created_at":"2026-07-09T01:20:30Z","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":"449fed8def4e575294e5d350f16ab3ed98ca5cba971c4f102e8c5a2052878679","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-08T16:04:05Z","title_canon_sha256":"7f511e0c62e7341beec29a5dc3a73ab0c950b4191cddd703eb5992a599345994"},"schema_version":"1.0","source":{"id":"2607.07580","kind":"arxiv","version":1}},"canonical_sha256":"2f3c2741c9ff5caf77831bf3030e6a59bc55bff6f53c52bc4c0f14470c1a8536","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2f3c2741c9ff5caf77831bf3030e6a59bc55bff6f53c52bc4c0f14470c1a8536","first_computed_at":"2026-07-09T01:20:30.120688Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-09T01:20:30.120688Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+U4GmhcwrNo+a6N+2E+3t7BjckNlrrua21gW1SJqFfd7nDQO5PNVojb032cziwAZRQg3LfTlGWyWBRK8dIm0Cg==","signature_status":"signed_v1","signed_at":"2026-07-09T01:20:30.121098Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.07580","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c4251ff0596d4903704d97146006678f85d53ea221f91d7693596c9f9b1e0013","sha256:e1bb04a7820f0f04d9135d66301fdf7c0bd037e6cf24f168429e94d8f7aa8303"],"state_sha256":"0a1534ed23ec2fa793c865aeff9fa713e7c2355e1a4c307c2ca78588c3835317"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vMtNl53UEjG4Lw7E4IlK+oBUuEW7AtvKJYYiNFzV/PoQ0G7W19KLlw7lpo3gXixk+aLw0r6m7c5Qgz9tYUyHCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T17:44:59.534458Z","bundle_sha256":"6c9b289dd5e025761ca11a42c2cf116107bb6ba8f4fa48a08696507d4a9cb59c"}}