{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:UIYKXLMKASTD4VLINPR67WUWMZ","short_pith_number":"pith:UIYKXLMK","canonical_record":{"source":{"id":"1505.00074","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-05-01T02:49:55Z","cross_cats_sorted":[],"title_canon_sha256":"64aa550784c6e03c7c6cffa3f21cae206f04311d3a9132b8d36ea944681242ac","abstract_canon_sha256":"12c78db09db7a9f5ffb83fa281d04b1276a286c4148bd082137c08c1cbf40567"},"schema_version":"1.0"},"canonical_sha256":"a230abad8a04a63e55686be3efda96664cd96273d94ac62f67642b2d584fbe45","source":{"kind":"arxiv","id":"1505.00074","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.00074","created_at":"2026-05-18T02:03:44Z"},{"alias_kind":"arxiv_version","alias_value":"1505.00074v2","created_at":"2026-05-18T02:03:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.00074","created_at":"2026-05-18T02:03:44Z"},{"alias_kind":"pith_short_12","alias_value":"UIYKXLMKASTD","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UIYKXLMKASTD4VLI","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UIYKXLMK","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:UIYKXLMKASTD4VLINPR67WUWMZ","target":"record","payload":{"canonical_record":{"source":{"id":"1505.00074","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-05-01T02:49:55Z","cross_cats_sorted":[],"title_canon_sha256":"64aa550784c6e03c7c6cffa3f21cae206f04311d3a9132b8d36ea944681242ac","abstract_canon_sha256":"12c78db09db7a9f5ffb83fa281d04b1276a286c4148bd082137c08c1cbf40567"},"schema_version":"1.0"},"canonical_sha256":"a230abad8a04a63e55686be3efda96664cd96273d94ac62f67642b2d584fbe45","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:44.997838Z","signature_b64":"fRN153S2cWT+xQ6suvoQRSIUSYPEcwJtriRhIzBXmQIfYWVb9Dp5rTHNKBnGuAEcckhAzDoOUnYG69fxNjapDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a230abad8a04a63e55686be3efda96664cd96273d94ac62f67642b2d584fbe45","last_reissued_at":"2026-05-18T02:03:44.997309Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:44.997309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.00074","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:03:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CR1farZZTLTmgjhvblHzaNlqf2hLO94g5ktG77bCi2qfLWZ2HMNJMoMDUk5wTWQ/hr/Zg5Htf5haTEpRYz6wAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T17:08:11.884757Z"},"content_sha256":"5f5c598666ca2ff92f23029e72f427ecd236191957daaa34ff6473db10a78aa4","schema_version":"1.0","event_id":"sha256:5f5c598666ca2ff92f23029e72f427ecd236191957daaa34ff6473db10a78aa4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:UIYKXLMKASTD4VLINPR67WUWMZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Image Denoising using Optimally Weighted Bilateral Filters: A Sure and Fast Approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Kollipara Rithwik, Kunal N. Chaudhury","submitted_at":"2015-05-01T02:49:55Z","abstract_excerpt":"The bilateral filter is known to be quite effective in denoising images corrupted with small dosages of additive Gaussian noise. The denoising performance of the filter, however, is known to degrade quickly with the increase in noise level. Several adaptations of the filter have been proposed in the literature to address this shortcoming, but often at a substantial computational overhead. In this paper, we report a simple pre-processing step that can substantially improve the denoising performance of the bilateral filter, at almost no additional cost. The modified filter is designed to be robu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.00074","kind":"arxiv","version":2},"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":"2026-05-18T02:03:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2ilFakxjYkYNIgBMomHC4TCbycqm15vgdUfYMlS/IwpTIRdABS6Q/Fi1ypA9XsjCARO3abV5Xy0nR9KIs7DOBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T17:08:11.885105Z"},"content_sha256":"4af1eea3fae2fecf7623f344038d765612c03ea8807091586dfe3d5cb31c3825","schema_version":"1.0","event_id":"sha256:4af1eea3fae2fecf7623f344038d765612c03ea8807091586dfe3d5cb31c3825"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UIYKXLMKASTD4VLINPR67WUWMZ/bundle.json","state_url":"https://pith.science/pith/UIYKXLMKASTD4VLINPR67WUWMZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UIYKXLMKASTD4VLINPR67WUWMZ/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":"2026-06-28T17:08:11Z","links":{"resolver":"https://pith.science/pith/UIYKXLMKASTD4VLINPR67WUWMZ","bundle":"https://pith.science/pith/UIYKXLMKASTD4VLINPR67WUWMZ/bundle.json","state":"https://pith.science/pith/UIYKXLMKASTD4VLINPR67WUWMZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UIYKXLMKASTD4VLINPR67WUWMZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:UIYKXLMKASTD4VLINPR67WUWMZ","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":"12c78db09db7a9f5ffb83fa281d04b1276a286c4148bd082137c08c1cbf40567","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-05-01T02:49:55Z","title_canon_sha256":"64aa550784c6e03c7c6cffa3f21cae206f04311d3a9132b8d36ea944681242ac"},"schema_version":"1.0","source":{"id":"1505.00074","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.00074","created_at":"2026-05-18T02:03:44Z"},{"alias_kind":"arxiv_version","alias_value":"1505.00074v2","created_at":"2026-05-18T02:03:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.00074","created_at":"2026-05-18T02:03:44Z"},{"alias_kind":"pith_short_12","alias_value":"UIYKXLMKASTD","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UIYKXLMKASTD4VLI","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UIYKXLMK","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:4af1eea3fae2fecf7623f344038d765612c03ea8807091586dfe3d5cb31c3825","target":"graph","created_at":"2026-05-18T02:03:44Z","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":"The bilateral filter is known to be quite effective in denoising images corrupted with small dosages of additive Gaussian noise. The denoising performance of the filter, however, is known to degrade quickly with the increase in noise level. Several adaptations of the filter have been proposed in the literature to address this shortcoming, but often at a substantial computational overhead. In this paper, we report a simple pre-processing step that can substantially improve the denoising performance of the bilateral filter, at almost no additional cost. The modified filter is designed to be robu","authors_text":"Kollipara Rithwik, Kunal N. Chaudhury","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-05-01T02:49:55Z","title":"Image Denoising using Optimally Weighted Bilateral Filters: A Sure and Fast Approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.00074","kind":"arxiv","version":2},"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":"sha256:5f5c598666ca2ff92f23029e72f427ecd236191957daaa34ff6473db10a78aa4","target":"record","created_at":"2026-05-18T02:03:44Z","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":"12c78db09db7a9f5ffb83fa281d04b1276a286c4148bd082137c08c1cbf40567","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-05-01T02:49:55Z","title_canon_sha256":"64aa550784c6e03c7c6cffa3f21cae206f04311d3a9132b8d36ea944681242ac"},"schema_version":"1.0","source":{"id":"1505.00074","kind":"arxiv","version":2}},"canonical_sha256":"a230abad8a04a63e55686be3efda96664cd96273d94ac62f67642b2d584fbe45","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a230abad8a04a63e55686be3efda96664cd96273d94ac62f67642b2d584fbe45","first_computed_at":"2026-05-18T02:03:44.997309Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:44.997309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fRN153S2cWT+xQ6suvoQRSIUSYPEcwJtriRhIzBXmQIfYWVb9Dp5rTHNKBnGuAEcckhAzDoOUnYG69fxNjapDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:44.997838Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.00074","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f5c598666ca2ff92f23029e72f427ecd236191957daaa34ff6473db10a78aa4","sha256:4af1eea3fae2fecf7623f344038d765612c03ea8807091586dfe3d5cb31c3825"],"state_sha256":"0a2ee4b6d622bbf0626cc17f7949337d439d17d59d81c6e1a369b04fa96df85e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H9Cj5NQ2AZxjzTOHhNpze4nBI4ODUxPxR+a2ACeK85vEcTinp83dZfkNb0Fvbo8A8bsrazqlKret5JsmAgqsDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T17:08:11.887081Z","bundle_sha256":"50655223384e1f6b56c8d742529e962be3225c03ae82a77478ecb65b1e2ea4d4"}}