{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:UADETSAPVMVUXBLDJSJCLSD7G7","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":"855262179b37d85fc6a29a39622b8874b8e63cf84e3f97f5678f5951eeb428d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2018-07-21T16:49:25Z","title_canon_sha256":"bf87cc3befc00018021dc90435b64df7687b3ef1a23ebe9593e8c9456f2b4aee"},"schema_version":"1.0","source":{"id":"1807.08176","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.08176","created_at":"2026-05-18T00:10:08Z"},{"alias_kind":"arxiv_version","alias_value":"1807.08176v1","created_at":"2026-05-18T00:10:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.08176","created_at":"2026-05-18T00:10:08Z"},{"alias_kind":"pith_short_12","alias_value":"UADETSAPVMVU","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"UADETSAPVMVUXBLD","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"UADETSAP","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:c7a989c3ca357728e1388c92f54c8c730a63772fd8df86b04076e8322fb89edb","target":"graph","created_at":"2026-05-18T00:10:08Z","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 salt and pepper noise, especially the one with extremely high percentage of impulses, brings a significant challenge to image denoising. In this paper, we propose a non-local switching filter convolutional neural network denoising algorithm, named NLSF-CNN, for salt and pepper noise. As its name suggested, our NLSF-CNN consists of two steps, i.e., a NLSF processing step and a CNN training step. First, we develop a NLSF pre-processing step for noisy images using non-local information. Then, the pre-processed images are divided into patches and used for CNN training, leading to a CNN denoisi","authors_text":"Bo Fu, Xiang-Hai Wang, Xiao-Yang Zhao, Yi Li, Yong-Gong Ren","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2018-07-21T16:49:25Z","title":"A Convolutional Neural Networks Denoising Approach for Salt and Pepper Noise"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.08176","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":"sha256:9a8b0d3bdf050714cafe8a348a39d40a4eea63d052c61929f033532cdd627247","target":"record","created_at":"2026-05-18T00:10:08Z","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":"855262179b37d85fc6a29a39622b8874b8e63cf84e3f97f5678f5951eeb428d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2018-07-21T16:49:25Z","title_canon_sha256":"bf87cc3befc00018021dc90435b64df7687b3ef1a23ebe9593e8c9456f2b4aee"},"schema_version":"1.0","source":{"id":"1807.08176","kind":"arxiv","version":1}},"canonical_sha256":"a00649c80fab2b4b85634c9225c87f37db368251568c9c749b5b0fe3eceed3d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a00649c80fab2b4b85634c9225c87f37db368251568c9c749b5b0fe3eceed3d2","first_computed_at":"2026-05-18T00:10:08.993975Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:08.993975Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tFkOTx0ZH/08Jbuzju07j7Md1tNUHWG+ar8rqDPfZmAsSsS+Q9R8yinZk1IIlGQgbYsL6K/+W5vBkrfm8bMYBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:08.994541Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.08176","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a8b0d3bdf050714cafe8a348a39d40a4eea63d052c61929f033532cdd627247","sha256:c7a989c3ca357728e1388c92f54c8c730a63772fd8df86b04076e8322fb89edb"],"state_sha256":"8795ba4fa25d9f34d0dbabbff38e7c43eae31ced0c3fde08d7d0fe427b99e0e2"}