{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:KLAGZAPWD5YOCMHMHVBDVRUUIU","short_pith_number":"pith:KLAGZAPW","canonical_record":{"source":{"id":"1411.4033","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2014-11-14T20:24:31Z","cross_cats_sorted":[],"title_canon_sha256":"9dbb4a27a61b8b0c70043542c27f17774f27c992a9602460c56b494298122bb1","abstract_canon_sha256":"fc876a23abb7b6bad78b93e4905a20c0a81b2d4d4793270c687fe8a8152945fb"},"schema_version":"1.0"},"canonical_sha256":"52c06c81f61f70e130ec3d423ac694450433a70c3c4edccbfc483866e90f1acb","source":{"kind":"arxiv","id":"1411.4033","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.4033","created_at":"2026-05-18T02:27:44Z"},{"alias_kind":"arxiv_version","alias_value":"1411.4033v3","created_at":"2026-05-18T02:27:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.4033","created_at":"2026-05-18T02:27:44Z"},{"alias_kind":"pith_short_12","alias_value":"KLAGZAPWD5YO","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KLAGZAPWD5YOCMHM","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KLAGZAPW","created_at":"2026-05-18T12:28:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:KLAGZAPWD5YOCMHMHVBDVRUUIU","target":"record","payload":{"canonical_record":{"source":{"id":"1411.4033","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2014-11-14T20:24:31Z","cross_cats_sorted":[],"title_canon_sha256":"9dbb4a27a61b8b0c70043542c27f17774f27c992a9602460c56b494298122bb1","abstract_canon_sha256":"fc876a23abb7b6bad78b93e4905a20c0a81b2d4d4793270c687fe8a8152945fb"},"schema_version":"1.0"},"canonical_sha256":"52c06c81f61f70e130ec3d423ac694450433a70c3c4edccbfc483866e90f1acb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:27:44.036895Z","signature_b64":"9V6+hn6mXCqZ/8AM91Ot3fCSpN/gCOdOzGJsaYdoDPcAwn2mMmiwGUlkijWybufNVxCv5ZYEKro6Q600XCwdCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"52c06c81f61f70e130ec3d423ac694450433a70c3c4edccbfc483866e90f1acb","last_reissued_at":"2026-05-18T02:27:44.036205Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:27:44.036205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1411.4033","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":"2026-05-18T02:27:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eTEJqEj7VOS23Mm0xR3ZB0+kZd5jIrgPNlYeSqeMMSWgYPvi4GxYjNEmcCmTwmcxvZDrCwSd4Td74xAiJFuPCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T01:55:46.433556Z"},"content_sha256":"b3c62f109cf10891cf6525d0987f333a1f5247eef82c3c27102ecadb52538d00","schema_version":"1.0","event_id":"sha256:b3c62f109cf10891cf6525d0987f333a1f5247eef82c3c27102ecadb52538d00"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:KLAGZAPWD5YOCMHMHVBDVRUUIU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sparse And Low Rank Decomposition Based Batch Image Alignment for Speckle Reduction of retinal OCT Images","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Ahmadreza Baghaie, Roshan M. D'Souza, Zeyun Yu","submitted_at":"2014-11-14T20:24:31Z","abstract_excerpt":"Optical Coherence Tomography (OCT) is an emerging technique in the field of biomedical imaging, with applications in ophthalmology, dermatology, coronary imaging etc. Due to the underlying physics, OCT images usually suffer from a granular pattern, called speckle noise, which restricts the process of interpretation. Here, a sparse and low rank decomposition based method is used for speckle reduction in retinal OCT images. This technique works on input data that consists of several B-scans of the same location. The next step is the batch alignment of the images using a sparse and low-rank decom"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.4033","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":""},"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":"2026-05-18T02:27:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IOOTpeHZqObuSGBTdVt+88YjPvvmfY4i9Nx3q7ohyFIkQOHzygyjcAT83KLrxmX0DvXyNaq7X5hAsDglc8lSDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T01:55:46.434265Z"},"content_sha256":"f6572ff41c4f8abe4a12488f9d10daf1888e8c93b30cb576cb97d64052ef6959","schema_version":"1.0","event_id":"sha256:f6572ff41c4f8abe4a12488f9d10daf1888e8c93b30cb576cb97d64052ef6959"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KLAGZAPWD5YOCMHMHVBDVRUUIU/bundle.json","state_url":"https://pith.science/pith/KLAGZAPWD5YOCMHMHVBDVRUUIU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KLAGZAPWD5YOCMHMHVBDVRUUIU/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":"2026-06-09T01:55:46Z","links":{"resolver":"https://pith.science/pith/KLAGZAPWD5YOCMHMHVBDVRUUIU","bundle":"https://pith.science/pith/KLAGZAPWD5YOCMHMHVBDVRUUIU/bundle.json","state":"https://pith.science/pith/KLAGZAPWD5YOCMHMHVBDVRUUIU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KLAGZAPWD5YOCMHMHVBDVRUUIU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:KLAGZAPWD5YOCMHMHVBDVRUUIU","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":"fc876a23abb7b6bad78b93e4905a20c0a81b2d4d4793270c687fe8a8152945fb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2014-11-14T20:24:31Z","title_canon_sha256":"9dbb4a27a61b8b0c70043542c27f17774f27c992a9602460c56b494298122bb1"},"schema_version":"1.0","source":{"id":"1411.4033","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.4033","created_at":"2026-05-18T02:27:44Z"},{"alias_kind":"arxiv_version","alias_value":"1411.4033v3","created_at":"2026-05-18T02:27:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.4033","created_at":"2026-05-18T02:27:44Z"},{"alias_kind":"pith_short_12","alias_value":"KLAGZAPWD5YO","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KLAGZAPWD5YOCMHM","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KLAGZAPW","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:f6572ff41c4f8abe4a12488f9d10daf1888e8c93b30cb576cb97d64052ef6959","target":"graph","created_at":"2026-05-18T02:27:44Z","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":"Optical Coherence Tomography (OCT) is an emerging technique in the field of biomedical imaging, with applications in ophthalmology, dermatology, coronary imaging etc. Due to the underlying physics, OCT images usually suffer from a granular pattern, called speckle noise, which restricts the process of interpretation. Here, a sparse and low rank decomposition based method is used for speckle reduction in retinal OCT images. This technique works on input data that consists of several B-scans of the same location. The next step is the batch alignment of the images using a sparse and low-rank decom","authors_text":"Ahmadreza Baghaie, Roshan M. D'Souza, Zeyun Yu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2014-11-14T20:24:31Z","title":"Sparse And Low Rank Decomposition Based Batch Image Alignment for Speckle Reduction of retinal OCT Images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.4033","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:b3c62f109cf10891cf6525d0987f333a1f5247eef82c3c27102ecadb52538d00","target":"record","created_at":"2026-05-18T02:27:44Z","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":"fc876a23abb7b6bad78b93e4905a20c0a81b2d4d4793270c687fe8a8152945fb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2014-11-14T20:24:31Z","title_canon_sha256":"9dbb4a27a61b8b0c70043542c27f17774f27c992a9602460c56b494298122bb1"},"schema_version":"1.0","source":{"id":"1411.4033","kind":"arxiv","version":3}},"canonical_sha256":"52c06c81f61f70e130ec3d423ac694450433a70c3c4edccbfc483866e90f1acb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"52c06c81f61f70e130ec3d423ac694450433a70c3c4edccbfc483866e90f1acb","first_computed_at":"2026-05-18T02:27:44.036205Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:27:44.036205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9V6+hn6mXCqZ/8AM91Ot3fCSpN/gCOdOzGJsaYdoDPcAwn2mMmiwGUlkijWybufNVxCv5ZYEKro6Q600XCwdCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:27:44.036895Z","signed_message":"canonical_sha256_bytes"},"source_id":"1411.4033","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b3c62f109cf10891cf6525d0987f333a1f5247eef82c3c27102ecadb52538d00","sha256:f6572ff41c4f8abe4a12488f9d10daf1888e8c93b30cb576cb97d64052ef6959"],"state_sha256":"7479210c2d7907634c0e9674f1932c7248d4e27b560e790fcefefbb629dffd81"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GkY6S+p9DitYP9UgN+xcZbJ/EwjEiupdC9pvJ9dHL3rOPw++mouc+BeMQar3jwVOjREir8jmze+3soM/bTMpCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T01:55:46.438015Z","bundle_sha256":"e6a5203964da9fa634e7361cc13ad0eb1b2caeaf7bd32d5fc88b62f0bffda2db"}}