{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:OF4AZJ4MY2ETRHFAX6RZEDRWKB","short_pith_number":"pith:OF4AZJ4M","canonical_record":{"source":{"id":"1302.0439","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2013-02-03T00:46:11Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"7ababe4054c59b241f3a9cc7644fc15d2c08f5cb2a9f83dc7a221e7ea9b064fc","abstract_canon_sha256":"9e05d453019031012ca6b3a8eec577b8150db498d79857d3e277b1d1561d8621"},"schema_version":"1.0"},"canonical_sha256":"71780ca78cc689389ca0bfa3920e36506df0b50c608052a79b7072288ca239fc","source":{"kind":"arxiv","id":"1302.0439","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.0439","created_at":"2026-05-18T03:34:15Z"},{"alias_kind":"arxiv_version","alias_value":"1302.0439v2","created_at":"2026-05-18T03:34:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.0439","created_at":"2026-05-18T03:34:15Z"},{"alias_kind":"pith_short_12","alias_value":"OF4AZJ4MY2ET","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OF4AZJ4MY2ETRHFA","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OF4AZJ4M","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:OF4AZJ4MY2ETRHFAX6RZEDRWKB","target":"record","payload":{"canonical_record":{"source":{"id":"1302.0439","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2013-02-03T00:46:11Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"7ababe4054c59b241f3a9cc7644fc15d2c08f5cb2a9f83dc7a221e7ea9b064fc","abstract_canon_sha256":"9e05d453019031012ca6b3a8eec577b8150db498d79857d3e277b1d1561d8621"},"schema_version":"1.0"},"canonical_sha256":"71780ca78cc689389ca0bfa3920e36506df0b50c608052a79b7072288ca239fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:34:15.753980Z","signature_b64":"1whqO17ZgBrx1Ed39tCH3nhBNayXEo4edrDZfFb2T0F7uDKusmBJ19YNnCX+bm5B36NBbM9hJ+MiCdnMIrMADQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"71780ca78cc689389ca0bfa3920e36506df0b50c608052a79b7072288ca239fc","last_reissued_at":"2026-05-18T03:34:15.753132Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:34:15.753132Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.0439","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":"2026-05-18T03:34:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"07N+hmppkB2pTM7vGT1gxXVr1QnKG6OKzR1R6GLP1WvHEhfLccodK/LaibGIhXNXKRpwOHQjEfHfI4KFmf03BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T13:11:07.147989Z"},"content_sha256":"cfecd08ec0d2593f4c34298d4424ba94575112a713cc9cab335e0521a94d433d","schema_version":"1.0","event_id":"sha256:cfecd08ec0d2593f4c34298d4424ba94575112a713cc9cab335e0521a94d433d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:OF4AZJ4MY2ETRHFAX6RZEDRWKB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Correcting Camera Shake by Incremental Sparse Approximation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.GR"],"primary_cat":"cs.CV","authors_text":"Alfred O. Hero III, Anna C. Gilbert, Paul Shearer","submitted_at":"2013-02-03T00:46:11Z","abstract_excerpt":"The problem of deblurring an image when the blur kernel is unknown remains challenging after decades of work. Recently there has been rapid progress on correcting irregular blur patterns caused by camera shake, but there is still much room for improvement. We propose a new blind deconvolution method using incremental sparse edge approximation to recover images blurred by camera shake. We estimate the blur kernel first from only the strongest edges in the image, then gradually refine this estimate by allowing for weaker and weaker edges. Our method competes with the benchmark deblurring perform"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.0439","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":"2026-05-18T03:34:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bl+gbLWfJ+6AiKwvuRan5OBpG6haMm96UELP26JY3t1moySaPDqxZe+LCr4YcJ4qCpoNac64FPxLoHlDLXItDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T13:11:07.148744Z"},"content_sha256":"1c4879c3e2b4e6bf020c402119d02473b76f63c058cce00e74462d028aaad31d","schema_version":"1.0","event_id":"sha256:1c4879c3e2b4e6bf020c402119d02473b76f63c058cce00e74462d028aaad31d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OF4AZJ4MY2ETRHFAX6RZEDRWKB/bundle.json","state_url":"https://pith.science/pith/OF4AZJ4MY2ETRHFAX6RZEDRWKB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OF4AZJ4MY2ETRHFAX6RZEDRWKB/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":"2026-06-06T13:11:07Z","links":{"resolver":"https://pith.science/pith/OF4AZJ4MY2ETRHFAX6RZEDRWKB","bundle":"https://pith.science/pith/OF4AZJ4MY2ETRHFAX6RZEDRWKB/bundle.json","state":"https://pith.science/pith/OF4AZJ4MY2ETRHFAX6RZEDRWKB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OF4AZJ4MY2ETRHFAX6RZEDRWKB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:OF4AZJ4MY2ETRHFAX6RZEDRWKB","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":"9e05d453019031012ca6b3a8eec577b8150db498d79857d3e277b1d1561d8621","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2013-02-03T00:46:11Z","title_canon_sha256":"7ababe4054c59b241f3a9cc7644fc15d2c08f5cb2a9f83dc7a221e7ea9b064fc"},"schema_version":"1.0","source":{"id":"1302.0439","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.0439","created_at":"2026-05-18T03:34:15Z"},{"alias_kind":"arxiv_version","alias_value":"1302.0439v2","created_at":"2026-05-18T03:34:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.0439","created_at":"2026-05-18T03:34:15Z"},{"alias_kind":"pith_short_12","alias_value":"OF4AZJ4MY2ET","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OF4AZJ4MY2ETRHFA","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OF4AZJ4M","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:1c4879c3e2b4e6bf020c402119d02473b76f63c058cce00e74462d028aaad31d","target":"graph","created_at":"2026-05-18T03:34:15Z","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 problem of deblurring an image when the blur kernel is unknown remains challenging after decades of work. Recently there has been rapid progress on correcting irregular blur patterns caused by camera shake, but there is still much room for improvement. We propose a new blind deconvolution method using incremental sparse edge approximation to recover images blurred by camera shake. We estimate the blur kernel first from only the strongest edges in the image, then gradually refine this estimate by allowing for weaker and weaker edges. Our method competes with the benchmark deblurring perform","authors_text":"Alfred O. Hero III, Anna C. Gilbert, Paul Shearer","cross_cats":["cs.GR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2013-02-03T00:46:11Z","title":"Correcting Camera Shake by Incremental Sparse Approximation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.0439","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:cfecd08ec0d2593f4c34298d4424ba94575112a713cc9cab335e0521a94d433d","target":"record","created_at":"2026-05-18T03:34:15Z","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":"9e05d453019031012ca6b3a8eec577b8150db498d79857d3e277b1d1561d8621","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2013-02-03T00:46:11Z","title_canon_sha256":"7ababe4054c59b241f3a9cc7644fc15d2c08f5cb2a9f83dc7a221e7ea9b064fc"},"schema_version":"1.0","source":{"id":"1302.0439","kind":"arxiv","version":2}},"canonical_sha256":"71780ca78cc689389ca0bfa3920e36506df0b50c608052a79b7072288ca239fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"71780ca78cc689389ca0bfa3920e36506df0b50c608052a79b7072288ca239fc","first_computed_at":"2026-05-18T03:34:15.753132Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:34:15.753132Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1whqO17ZgBrx1Ed39tCH3nhBNayXEo4edrDZfFb2T0F7uDKusmBJ19YNnCX+bm5B36NBbM9hJ+MiCdnMIrMADQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:34:15.753980Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.0439","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cfecd08ec0d2593f4c34298d4424ba94575112a713cc9cab335e0521a94d433d","sha256:1c4879c3e2b4e6bf020c402119d02473b76f63c058cce00e74462d028aaad31d"],"state_sha256":"7296ae75629603c325b3e233cf32d119627e7e245359e61ba3e6660dbf41e73f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BX/COQozSvWBev9k1NGlN1IcyApG1bJCxQdEvbYilGtPZN5zM4knTZneazTSJ056FSXlcVOo+R5CrTeh+IL9Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T13:11:07.152733Z","bundle_sha256":"8a010dcbf63535dde4d53b8c7aeef24c7a05fd353c480985b511478e2c00895f"}}