{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:CONL6XYHUDNRN6FFUPM5LD625P","short_pith_number":"pith:CONL6XYH","canonical_record":{"source":{"id":"2203.02846","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-03-06T01:33:04Z","cross_cats_sorted":[],"title_canon_sha256":"ceaab077aa10f2813cb235b34dd2c3792182ae5e8426a0194e5f712ff62d8aff","abstract_canon_sha256":"1ccc8f1cf2ac81e0934605a831f6997b10541dd542a652e6019652ccaad402de"},"schema_version":"1.0"},"canonical_sha256":"139abf5f07a0db16f8a5a3d9d58fdaebf5d26370eb478694ee982e814c86f148","source":{"kind":"arxiv","id":"2203.02846","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.02846","created_at":"2026-07-05T05:12:50Z"},{"alias_kind":"arxiv_version","alias_value":"2203.02846v4","created_at":"2026-07-05T05:12:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.02846","created_at":"2026-07-05T05:12:50Z"},{"alias_kind":"pith_short_12","alias_value":"CONL6XYHUDNR","created_at":"2026-07-05T05:12:50Z"},{"alias_kind":"pith_short_16","alias_value":"CONL6XYHUDNRN6FF","created_at":"2026-07-05T05:12:50Z"},{"alias_kind":"pith_short_8","alias_value":"CONL6XYH","created_at":"2026-07-05T05:12:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:CONL6XYHUDNRN6FFUPM5LD625P","target":"record","payload":{"canonical_record":{"source":{"id":"2203.02846","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-03-06T01:33:04Z","cross_cats_sorted":[],"title_canon_sha256":"ceaab077aa10f2813cb235b34dd2c3792182ae5e8426a0194e5f712ff62d8aff","abstract_canon_sha256":"1ccc8f1cf2ac81e0934605a831f6997b10541dd542a652e6019652ccaad402de"},"schema_version":"1.0"},"canonical_sha256":"139abf5f07a0db16f8a5a3d9d58fdaebf5d26370eb478694ee982e814c86f148","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:12:50.331742Z","signature_b64":"cHSIeCnJpCWdeGBxhqRW7MKdxluW0x+6TiXW615O15MFs/gsctSEJeY0jmmgPZakiflOKKAEKCwGfEZSgRlRBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"139abf5f07a0db16f8a5a3d9d58fdaebf5d26370eb478694ee982e814c86f148","last_reissued_at":"2026-07-05T05:12:50.331386Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:12:50.331386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2203.02846","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:12:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W/nETUJBl3KKIg2nuL/YHq01xiUrupXc/N+FP5h/WZeEyPGgK1kkjaaGT0+R3zvN6s+20BmTdXQPrRrYWlD/Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T08:54:27.091077Z"},"content_sha256":"cd07f94a4695e87426644522e1a18b9cffd862314abf47903d5e80ddf18896da","schema_version":"1.0","event_id":"sha256:cd07f94a4695e87426644522e1a18b9cffd862314abf47903d5e80ddf18896da"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:CONL6XYHUDNRN6FFUPM5LD625P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Region Proposal Rectification Towards Robust Instance Segmentation of Biological Images","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Di Liu, Dimitris Metaxas, Haiming Tang, He Wang, Jingru Yi, Ligong Han, Mu Zhou, Qi Chang, Qilong Zhangli, Song Wen, Xiaoxiao He, Yunhe Gao, Zhaoyang Xia","submitted_at":"2022-03-06T01:33:04Z","abstract_excerpt":"Top-down instance segmentation framework has shown its superiority in object detection compared to the bottom-up framework. While it is efficient in addressing over-segmentation, top-down instance segmentation suffers from over-crop problem. However, a complete segmentation mask is crucial for biological image analysis as it delivers important morphological properties such as shapes and volumes. In this paper, we propose a region proposal rectification (RPR) module to address this challenging incomplete segmentation problem. In particular, we offer a progressive ROIAlign module to introduce ne"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.02846","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2203.02846/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T05:12:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D5mZj1FDu4TW5LwIJMVHyxNdlccapubJtn7tap6J7nNuNDXRD1KL+ESpsL7j8+Ds0fKjkcX9Z5p2Il2MpAMUCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T08:54:27.091686Z"},"content_sha256":"6cc649df2ee67000ef8449ced7e07e7e2dcfe8b81c0e78442a3bfd331f57111d","schema_version":"1.0","event_id":"sha256:6cc649df2ee67000ef8449ced7e07e7e2dcfe8b81c0e78442a3bfd331f57111d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CONL6XYHUDNRN6FFUPM5LD625P/bundle.json","state_url":"https://pith.science/pith/CONL6XYHUDNRN6FFUPM5LD625P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CONL6XYHUDNRN6FFUPM5LD625P/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":"2026-08-13T08:54:27Z","links":{"resolver":"https://pith.science/pith/CONL6XYHUDNRN6FFUPM5LD625P","bundle":"https://pith.science/pith/CONL6XYHUDNRN6FFUPM5LD625P/bundle.json","state":"https://pith.science/pith/CONL6XYHUDNRN6FFUPM5LD625P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CONL6XYHUDNRN6FFUPM5LD625P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:CONL6XYHUDNRN6FFUPM5LD625P","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":"1ccc8f1cf2ac81e0934605a831f6997b10541dd542a652e6019652ccaad402de","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-03-06T01:33:04Z","title_canon_sha256":"ceaab077aa10f2813cb235b34dd2c3792182ae5e8426a0194e5f712ff62d8aff"},"schema_version":"1.0","source":{"id":"2203.02846","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.02846","created_at":"2026-07-05T05:12:50Z"},{"alias_kind":"arxiv_version","alias_value":"2203.02846v4","created_at":"2026-07-05T05:12:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.02846","created_at":"2026-07-05T05:12:50Z"},{"alias_kind":"pith_short_12","alias_value":"CONL6XYHUDNR","created_at":"2026-07-05T05:12:50Z"},{"alias_kind":"pith_short_16","alias_value":"CONL6XYHUDNRN6FF","created_at":"2026-07-05T05:12:50Z"},{"alias_kind":"pith_short_8","alias_value":"CONL6XYH","created_at":"2026-07-05T05:12:50Z"}],"graph_snapshots":[{"event_id":"sha256:6cc649df2ee67000ef8449ced7e07e7e2dcfe8b81c0e78442a3bfd331f57111d","target":"graph","created_at":"2026-07-05T05:12:50Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2203.02846/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Top-down instance segmentation framework has shown its superiority in object detection compared to the bottom-up framework. While it is efficient in addressing over-segmentation, top-down instance segmentation suffers from over-crop problem. However, a complete segmentation mask is crucial for biological image analysis as it delivers important morphological properties such as shapes and volumes. In this paper, we propose a region proposal rectification (RPR) module to address this challenging incomplete segmentation problem. In particular, we offer a progressive ROIAlign module to introduce ne","authors_text":"Di Liu, Dimitris Metaxas, Haiming Tang, He Wang, Jingru Yi, Ligong Han, Mu Zhou, Qi Chang, Qilong Zhangli, Song Wen, Xiaoxiao He, Yunhe Gao, Zhaoyang Xia","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-03-06T01:33:04Z","title":"Region Proposal Rectification Towards Robust Instance Segmentation of Biological Images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.02846","kind":"arxiv","version":4},"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:cd07f94a4695e87426644522e1a18b9cffd862314abf47903d5e80ddf18896da","target":"record","created_at":"2026-07-05T05:12:50Z","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":"1ccc8f1cf2ac81e0934605a831f6997b10541dd542a652e6019652ccaad402de","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-03-06T01:33:04Z","title_canon_sha256":"ceaab077aa10f2813cb235b34dd2c3792182ae5e8426a0194e5f712ff62d8aff"},"schema_version":"1.0","source":{"id":"2203.02846","kind":"arxiv","version":4}},"canonical_sha256":"139abf5f07a0db16f8a5a3d9d58fdaebf5d26370eb478694ee982e814c86f148","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"139abf5f07a0db16f8a5a3d9d58fdaebf5d26370eb478694ee982e814c86f148","first_computed_at":"2026-07-05T05:12:50.331386Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:12:50.331386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cHSIeCnJpCWdeGBxhqRW7MKdxluW0x+6TiXW615O15MFs/gsctSEJeY0jmmgPZakiflOKKAEKCwGfEZSgRlRBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:12:50.331742Z","signed_message":"canonical_sha256_bytes"},"source_id":"2203.02846","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cd07f94a4695e87426644522e1a18b9cffd862314abf47903d5e80ddf18896da","sha256:6cc649df2ee67000ef8449ced7e07e7e2dcfe8b81c0e78442a3bfd331f57111d"],"state_sha256":"7f715804dc688e72be29cff0a48052e3e2f6517e42b86c681122c2cc34c22720"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2C0SgEhoHGHJeoKTsVsQiOUFaK4FIpwMDH9x4l3+IzjxggMd+9Hi6PEF0v3xsMu2tIhSmTtsQa78hVty9H9qBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T08:54:27.095634Z","bundle_sha256":"42dafa4ab10b45457c6cbff5f9c5bf9c0fd266512adf03f2d78c10c9b6508ae4"}}