{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:WBA3XV4QNG63HUZKQOLV6GQI7B","short_pith_number":"pith:WBA3XV4Q","canonical_record":{"source":{"id":"2508.15011","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-08-20T19:04:32Z","cross_cats_sorted":[],"title_canon_sha256":"a863902e8f2314d36dcca0a7b9e3f8830376dcaa0ed510ecc283c1b6a3faf9b2","abstract_canon_sha256":"3241a62ac40a2fbf53797799ff32da3fc9cf935989e32455fe78957ab761f91b"},"schema_version":"1.0"},"canonical_sha256":"b041bbd79069bdb3d32a83975f1a08f860bd8f723a0fbe9cc39cc1a8d3dc4a4e","source":{"kind":"arxiv","id":"2508.15011","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.15011","created_at":"2026-07-05T11:57:05Z"},{"alias_kind":"arxiv_version","alias_value":"2508.15011v1","created_at":"2026-07-05T11:57:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.15011","created_at":"2026-07-05T11:57:05Z"},{"alias_kind":"pith_short_12","alias_value":"WBA3XV4QNG63","created_at":"2026-07-05T11:57:05Z"},{"alias_kind":"pith_short_16","alias_value":"WBA3XV4QNG63HUZK","created_at":"2026-07-05T11:57:05Z"},{"alias_kind":"pith_short_8","alias_value":"WBA3XV4Q","created_at":"2026-07-05T11:57:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:WBA3XV4QNG63HUZKQOLV6GQI7B","target":"record","payload":{"canonical_record":{"source":{"id":"2508.15011","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-08-20T19:04:32Z","cross_cats_sorted":[],"title_canon_sha256":"a863902e8f2314d36dcca0a7b9e3f8830376dcaa0ed510ecc283c1b6a3faf9b2","abstract_canon_sha256":"3241a62ac40a2fbf53797799ff32da3fc9cf935989e32455fe78957ab761f91b"},"schema_version":"1.0"},"canonical_sha256":"b041bbd79069bdb3d32a83975f1a08f860bd8f723a0fbe9cc39cc1a8d3dc4a4e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:57:05.024672Z","signature_b64":"XFAA0STFtW2d67J1UKeTsQJONIp1ut3sjnwJPbegmruhN1/9wDnoAco5YC/aydXPp+mqiJLfuXTC/jQdAx6RDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b041bbd79069bdb3d32a83975f1a08f860bd8f723a0fbe9cc39cc1a8d3dc4a4e","last_reissued_at":"2026-07-05T11:57:05.024242Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:57:05.024242Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2508.15011","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":"2026-07-05T11:57:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iZeLrDVbunBHALX4VhNjiVt/fjd3LRMpSV9Ro8OrTbNh6JZHW/0jGBHeOHgou1aYWGB9tQlHVaniNFy7n8+vCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T10:33:01.629852Z"},"content_sha256":"ef4be62ffc39798b16a1c10705c7d856901892b8daa0f97d1d7095ac21a41f39","schema_version":"1.0","event_id":"sha256:ef4be62ffc39798b16a1c10705c7d856901892b8daa0f97d1d7095ac21a41f39"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:WBA3XV4QNG63HUZKQOLV6GQI7B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Systematic Evaluation of Wavelet-Based Denoising for MRI Brain Images: Optimal Configurations and Performance Benchmarks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.IV","authors_text":"Asadullah Bin Rahman, Masud Ibn Afjal, Md. Abdulla Al Mamun","submitted_at":"2025-08-20T19:04:32Z","abstract_excerpt":"Medical imaging modalities including magnetic resonance imaging (MRI), computed tomography (CT), and ultrasound are essential for accurate diagnosis and treatment planning in modern healthcare. However, noise contamination during image acquisition and processing frequently degrades image quality, obscuring critical diagnostic details and compromising clinical decision-making. Additionally, enhancement techniques such as histogram equalization may inadvertently amplify existing noise artifacts, including salt-and-pepper distortions. This study investigates wavelet transform-based denoising meth"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.15011","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/2508.15011/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":"2026-07-05T11:57:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IC9Y04x8uTv6YZmHNHHAJZzPF02Hv4uawNr/UP1d85M3kF73OqNa8bFDmUx1mrL46+YxoHo7NK6gOSZL/dhgCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T10:33:01.631482Z"},"content_sha256":"b0f5821889abbc31f0268921022b08a17e46b0c5373ce1d1558b04ef43e4192b","schema_version":"1.0","event_id":"sha256:b0f5821889abbc31f0268921022b08a17e46b0c5373ce1d1558b04ef43e4192b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WBA3XV4QNG63HUZKQOLV6GQI7B/bundle.json","state_url":"https://pith.science/pith/WBA3XV4QNG63HUZKQOLV6GQI7B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WBA3XV4QNG63HUZKQOLV6GQI7B/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":"2026-08-18T10:33:01Z","links":{"resolver":"https://pith.science/pith/WBA3XV4QNG63HUZKQOLV6GQI7B","bundle":"https://pith.science/pith/WBA3XV4QNG63HUZKQOLV6GQI7B/bundle.json","state":"https://pith.science/pith/WBA3XV4QNG63HUZKQOLV6GQI7B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WBA3XV4QNG63HUZKQOLV6GQI7B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:WBA3XV4QNG63HUZKQOLV6GQI7B","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":"3241a62ac40a2fbf53797799ff32da3fc9cf935989e32455fe78957ab761f91b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-08-20T19:04:32Z","title_canon_sha256":"a863902e8f2314d36dcca0a7b9e3f8830376dcaa0ed510ecc283c1b6a3faf9b2"},"schema_version":"1.0","source":{"id":"2508.15011","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.15011","created_at":"2026-07-05T11:57:05Z"},{"alias_kind":"arxiv_version","alias_value":"2508.15011v1","created_at":"2026-07-05T11:57:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.15011","created_at":"2026-07-05T11:57:05Z"},{"alias_kind":"pith_short_12","alias_value":"WBA3XV4QNG63","created_at":"2026-07-05T11:57:05Z"},{"alias_kind":"pith_short_16","alias_value":"WBA3XV4QNG63HUZK","created_at":"2026-07-05T11:57:05Z"},{"alias_kind":"pith_short_8","alias_value":"WBA3XV4Q","created_at":"2026-07-05T11:57:05Z"}],"graph_snapshots":[{"event_id":"sha256:b0f5821889abbc31f0268921022b08a17e46b0c5373ce1d1558b04ef43e4192b","target":"graph","created_at":"2026-07-05T11:57:05Z","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/2508.15011/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Medical imaging modalities including magnetic resonance imaging (MRI), computed tomography (CT), and ultrasound are essential for accurate diagnosis and treatment planning in modern healthcare. However, noise contamination during image acquisition and processing frequently degrades image quality, obscuring critical diagnostic details and compromising clinical decision-making. Additionally, enhancement techniques such as histogram equalization may inadvertently amplify existing noise artifacts, including salt-and-pepper distortions. This study investigates wavelet transform-based denoising meth","authors_text":"Asadullah Bin Rahman, Masud Ibn Afjal, Md. Abdulla Al Mamun","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-08-20T19:04:32Z","title":"Systematic Evaluation of Wavelet-Based Denoising for MRI Brain Images: Optimal Configurations and Performance Benchmarks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.15011","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:ef4be62ffc39798b16a1c10705c7d856901892b8daa0f97d1d7095ac21a41f39","target":"record","created_at":"2026-07-05T11:57:05Z","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":"3241a62ac40a2fbf53797799ff32da3fc9cf935989e32455fe78957ab761f91b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-08-20T19:04:32Z","title_canon_sha256":"a863902e8f2314d36dcca0a7b9e3f8830376dcaa0ed510ecc283c1b6a3faf9b2"},"schema_version":"1.0","source":{"id":"2508.15011","kind":"arxiv","version":1}},"canonical_sha256":"b041bbd79069bdb3d32a83975f1a08f860bd8f723a0fbe9cc39cc1a8d3dc4a4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b041bbd79069bdb3d32a83975f1a08f860bd8f723a0fbe9cc39cc1a8d3dc4a4e","first_computed_at":"2026-07-05T11:57:05.024242Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:57:05.024242Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XFAA0STFtW2d67J1UKeTsQJONIp1ut3sjnwJPbegmruhN1/9wDnoAco5YC/aydXPp+mqiJLfuXTC/jQdAx6RDw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:57:05.024672Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.15011","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ef4be62ffc39798b16a1c10705c7d856901892b8daa0f97d1d7095ac21a41f39","sha256:b0f5821889abbc31f0268921022b08a17e46b0c5373ce1d1558b04ef43e4192b"],"state_sha256":"a677a69a0aceb3a13ed760cbf0f1116a1dac8cdba29bf84c3b1e5b254662e283"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pl1WIwcGtsKnO6mpdQy23BPrA/PkJq/nv7mhkFSEXcCqPr8kWpAB3+pcIpcclQL5skUWRrAjeqP9p66O414RBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T10:33:01.638984Z","bundle_sha256":"d54159a544429c8c183f1202e1cbfa2e619e9fd71c2878e369b94e9b7dad5206"}}