{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:WP5UPOJWS4MKVZ3AYWBLT5MD77","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":"d2ab17a4b0fc22b5fdb63f38269c1e751cbd02217666a37dbc03a037bd4fb3cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-03-31T03:01:10Z","title_canon_sha256":"40159bf9530aa0979a49196e2095862e57e9d70c6bc6ccc59921fa953ab71bf6"},"schema_version":"1.0","source":{"id":"1904.00328","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.00328","created_at":"2026-05-17T23:49:48Z"},{"alias_kind":"arxiv_version","alias_value":"1904.00328v1","created_at":"2026-05-17T23:49:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.00328","created_at":"2026-05-17T23:49:48Z"},{"alias_kind":"pith_short_12","alias_value":"WP5UPOJWS4MK","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"WP5UPOJWS4MKVZ3A","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"WP5UPOJW","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:1227ed18886c06407cd408f83eb2752e72f50869d937d3f7c7f73b742f8ec7c4","target":"graph","created_at":"2026-05-17T23:49:48Z","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":"In this paper, we propose a new model to segment cells in phase contrast microscopy images. Cell images collected from the similar scenario share a similar background. Inspired by this, we separate cells from the background in images by formulating the problem as a low-rank and structured sparse matrix decomposition problem. Then, we propose the inverse diffraction pattern filtering method to further segment individual cells in the images. This is a deconvolution process that has a much lower computational complexity when compared to the other restoration methods. Experiments demonstrate the e","authors_text":"Lin Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-03-31T03:01:10Z","title":"An Efficient Approach for Cell Segmentation in Phase Contrast Microscopy Images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.00328","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":"sha256:2781d1120fc5d04f65287738106e0134d65d1128e097daf09e48c38256172ba0","target":"record","created_at":"2026-05-17T23:49:48Z","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":"d2ab17a4b0fc22b5fdb63f38269c1e751cbd02217666a37dbc03a037bd4fb3cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-03-31T03:01:10Z","title_canon_sha256":"40159bf9530aa0979a49196e2095862e57e9d70c6bc6ccc59921fa953ab71bf6"},"schema_version":"1.0","source":{"id":"1904.00328","kind":"arxiv","version":1}},"canonical_sha256":"b3fb47b9369718aae760c582b9f583ffe2d0fbb48a35dc77e21cce9eb4b76a0f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b3fb47b9369718aae760c582b9f583ffe2d0fbb48a35dc77e21cce9eb4b76a0f","first_computed_at":"2026-05-17T23:49:48.745815Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:48.745815Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+o3JiU4t+u6BfC925hh3N1NMLrRjlgttb7SbrLq4kEip/tXA7v38aQlPj2KKbQuLgN8LjMoFS/hyJcnKQoNxCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:48.746389Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.00328","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2781d1120fc5d04f65287738106e0134d65d1128e097daf09e48c38256172ba0","sha256:1227ed18886c06407cd408f83eb2752e72f50869d937d3f7c7f73b742f8ec7c4"],"state_sha256":"7c38edd16e8d29dba2879826f2bb5d6e82adc33224839d86b8581c479f88fb96"}