{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:2A3ABHCYML3N4SACJW6C5JY36F","short_pith_number":"pith:2A3ABHCY","canonical_record":{"source":{"id":"2402.15977","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-25T03:43:07Z","cross_cats_sorted":[],"title_canon_sha256":"36c9fe7499afd1f0401640fddf5306faa4ce5165109fb99354a95da7300fc3d6","abstract_canon_sha256":"b22015fa1108c974128a2749ac1d3f52a82b0f6ba4bd7f3dcffb5e2af25fc068"},"schema_version":"1.0"},"canonical_sha256":"d036009c5862f6de48024dbc2ea71bf1452fbd35a9443bd5a61308987986763c","source":{"kind":"arxiv","id":"2402.15977","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.15977","created_at":"2026-07-05T09:24:56Z"},{"alias_kind":"arxiv_version","alias_value":"2402.15977v3","created_at":"2026-07-05T09:24:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.15977","created_at":"2026-07-05T09:24:56Z"},{"alias_kind":"pith_short_12","alias_value":"2A3ABHCYML3N","created_at":"2026-07-05T09:24:56Z"},{"alias_kind":"pith_short_16","alias_value":"2A3ABHCYML3N4SAC","created_at":"2026-07-05T09:24:56Z"},{"alias_kind":"pith_short_8","alias_value":"2A3ABHCY","created_at":"2026-07-05T09:24:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:2A3ABHCYML3N4SACJW6C5JY36F","target":"record","payload":{"canonical_record":{"source":{"id":"2402.15977","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-25T03:43:07Z","cross_cats_sorted":[],"title_canon_sha256":"36c9fe7499afd1f0401640fddf5306faa4ce5165109fb99354a95da7300fc3d6","abstract_canon_sha256":"b22015fa1108c974128a2749ac1d3f52a82b0f6ba4bd7f3dcffb5e2af25fc068"},"schema_version":"1.0"},"canonical_sha256":"d036009c5862f6de48024dbc2ea71bf1452fbd35a9443bd5a61308987986763c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:24:56.815790Z","signature_b64":"Q2g1I7dIDEfK9Zi/dS0XpoLE7DNNapjJwkSh/G1hlgac88mWtJWy4C4neEuiNh5l0vvRe8+W6Qw/GzHPFAzlCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d036009c5862f6de48024dbc2ea71bf1452fbd35a9443bd5a61308987986763c","last_reissued_at":"2026-07-05T09:24:56.815420Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:24:56.815420Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2402.15977","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T09:24:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ibh7i12lZAlXk8tncM00djCiQLfJvZyDnhragY0OzQ92dV8na4G+dFEEYkyn2MsA5XwOHSYPETcjXbfnTST2Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T19:35:48.492805Z"},"content_sha256":"fd2929bf0007f2a4c364d36ff177941dd345fac800eb57d95dd7ba5671bf67a7","schema_version":"1.0","event_id":"sha256:fd2929bf0007f2a4c364d36ff177941dd345fac800eb57d95dd7ba5671bf67a7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:2A3ABHCYML3N4SACJW6C5JY36F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Capsule Endoscopy Image Enhancement for Small Intestinal Villi Clarity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Ibragim. Atadjanov, Liangyi Huang, Mingfeng Wang, Peixuan Liu, Shaojie Zhang, Yinghui Wang, Yukai Wang","submitted_at":"2024-02-25T03:43:07Z","abstract_excerpt":"This paper presents, for the first time, an image enhancement methodology designed to enhance the clarity of small intestinal villi in Wireless Capsule Endoscopy (WCE) images. This method first separates the low-frequency and high-frequency components of small intestinal villi images using guided filtering. Subsequently, an adaptive light gain factor is generated based on the low-frequency component, and an adaptive gradient gain factor is derived from the convolution results of the Laplacian operator in different regions of small intestinal villi images. The obtained light gain factor and gra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.15977","kind":"arxiv","version":3},"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/2402.15977/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":"2026-07-05T09:24:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hxujCS188kYCwdr/vCYdJYHtToQT4B/uNAVG1JaZ1kLPG1ogwENm/04zCM+6/jJZFLEohvXmlLNJ/ztwwVgPDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T19:35:48.493186Z"},"content_sha256":"cbf73e4585eeb203c9491a788d1b336c5ad1578fbad6a23ea282ccf1a6180d0a","schema_version":"1.0","event_id":"sha256:cbf73e4585eeb203c9491a788d1b336c5ad1578fbad6a23ea282ccf1a6180d0a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2A3ABHCYML3N4SACJW6C5JY36F/bundle.json","state_url":"https://pith.science/pith/2A3ABHCYML3N4SACJW6C5JY36F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2A3ABHCYML3N4SACJW6C5JY36F/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":"2026-07-06T19:35:48Z","links":{"resolver":"https://pith.science/pith/2A3ABHCYML3N4SACJW6C5JY36F","bundle":"https://pith.science/pith/2A3ABHCYML3N4SACJW6C5JY36F/bundle.json","state":"https://pith.science/pith/2A3ABHCYML3N4SACJW6C5JY36F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2A3ABHCYML3N4SACJW6C5JY36F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:2A3ABHCYML3N4SACJW6C5JY36F","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":"b22015fa1108c974128a2749ac1d3f52a82b0f6ba4bd7f3dcffb5e2af25fc068","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-25T03:43:07Z","title_canon_sha256":"36c9fe7499afd1f0401640fddf5306faa4ce5165109fb99354a95da7300fc3d6"},"schema_version":"1.0","source":{"id":"2402.15977","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.15977","created_at":"2026-07-05T09:24:56Z"},{"alias_kind":"arxiv_version","alias_value":"2402.15977v3","created_at":"2026-07-05T09:24:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.15977","created_at":"2026-07-05T09:24:56Z"},{"alias_kind":"pith_short_12","alias_value":"2A3ABHCYML3N","created_at":"2026-07-05T09:24:56Z"},{"alias_kind":"pith_short_16","alias_value":"2A3ABHCYML3N4SAC","created_at":"2026-07-05T09:24:56Z"},{"alias_kind":"pith_short_8","alias_value":"2A3ABHCY","created_at":"2026-07-05T09:24:56Z"}],"graph_snapshots":[{"event_id":"sha256:cbf73e4585eeb203c9491a788d1b336c5ad1578fbad6a23ea282ccf1a6180d0a","target":"graph","created_at":"2026-07-05T09:24:56Z","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/2402.15977/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper presents, for the first time, an image enhancement methodology designed to enhance the clarity of small intestinal villi in Wireless Capsule Endoscopy (WCE) images. This method first separates the low-frequency and high-frequency components of small intestinal villi images using guided filtering. Subsequently, an adaptive light gain factor is generated based on the low-frequency component, and an adaptive gradient gain factor is derived from the convolution results of the Laplacian operator in different regions of small intestinal villi images. The obtained light gain factor and gra","authors_text":"Ibragim. Atadjanov, Liangyi Huang, Mingfeng Wang, Peixuan Liu, Shaojie Zhang, Yinghui Wang, Yukai Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-25T03:43:07Z","title":"Capsule Endoscopy Image Enhancement for Small Intestinal Villi Clarity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.15977","kind":"arxiv","version":3},"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:fd2929bf0007f2a4c364d36ff177941dd345fac800eb57d95dd7ba5671bf67a7","target":"record","created_at":"2026-07-05T09:24:56Z","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":"b22015fa1108c974128a2749ac1d3f52a82b0f6ba4bd7f3dcffb5e2af25fc068","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-02-25T03:43:07Z","title_canon_sha256":"36c9fe7499afd1f0401640fddf5306faa4ce5165109fb99354a95da7300fc3d6"},"schema_version":"1.0","source":{"id":"2402.15977","kind":"arxiv","version":3}},"canonical_sha256":"d036009c5862f6de48024dbc2ea71bf1452fbd35a9443bd5a61308987986763c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d036009c5862f6de48024dbc2ea71bf1452fbd35a9443bd5a61308987986763c","first_computed_at":"2026-07-05T09:24:56.815420Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:24:56.815420Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q2g1I7dIDEfK9Zi/dS0XpoLE7DNNapjJwkSh/G1hlgac88mWtJWy4C4neEuiNh5l0vvRe8+W6Qw/GzHPFAzlCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T09:24:56.815790Z","signed_message":"canonical_sha256_bytes"},"source_id":"2402.15977","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fd2929bf0007f2a4c364d36ff177941dd345fac800eb57d95dd7ba5671bf67a7","sha256:cbf73e4585eeb203c9491a788d1b336c5ad1578fbad6a23ea282ccf1a6180d0a"],"state_sha256":"244b2cb05dfa4f77b5dcff729229c15dbac567c1ed18996182d52623d9db017d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"67QdCEuVCrOjSfRtO3K+Wpa7uGh9/JhW/XYEUIRB84swkH12Dsi2/MTVorLC8euKty45b+h6gK0HEYvrVX2XDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T19:35:48.495158Z","bundle_sha256":"2318ef04bda8157862c97506d259e6afb633dc353e5f21a7942f733b61212f75"}}