{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:INC5XCIPABXIT2JIIXI5CQZWRP","short_pith_number":"pith:INC5XCIP","canonical_record":{"source":{"id":"2110.01644","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-10-04T18:15:45Z","cross_cats_sorted":[],"title_canon_sha256":"c6a20fa3f577f67aafa19e8db71d2426438ab14101bafe1d22a3cac12e4b303d","abstract_canon_sha256":"8b1d6a5f29d64e0f11a913660dfed125b96a96304587bcb7f0a2ef2f936ed47d"},"schema_version":"1.0"},"canonical_sha256":"4345db890f006e89e92845d1d143368bcdd6ea4083f3e0833e8d268f019a150f","source":{"kind":"arxiv","id":"2110.01644","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2110.01644","created_at":"2026-07-05T03:31:14Z"},{"alias_kind":"arxiv_version","alias_value":"2110.01644v3","created_at":"2026-07-05T03:31:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.01644","created_at":"2026-07-05T03:31:14Z"},{"alias_kind":"pith_short_12","alias_value":"INC5XCIPABXI","created_at":"2026-07-05T03:31:14Z"},{"alias_kind":"pith_short_16","alias_value":"INC5XCIPABXIT2JI","created_at":"2026-07-05T03:31:14Z"},{"alias_kind":"pith_short_8","alias_value":"INC5XCIP","created_at":"2026-07-05T03:31:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:INC5XCIPABXIT2JIIXI5CQZWRP","target":"record","payload":{"canonical_record":{"source":{"id":"2110.01644","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-10-04T18:15:45Z","cross_cats_sorted":[],"title_canon_sha256":"c6a20fa3f577f67aafa19e8db71d2426438ab14101bafe1d22a3cac12e4b303d","abstract_canon_sha256":"8b1d6a5f29d64e0f11a913660dfed125b96a96304587bcb7f0a2ef2f936ed47d"},"schema_version":"1.0"},"canonical_sha256":"4345db890f006e89e92845d1d143368bcdd6ea4083f3e0833e8d268f019a150f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:31:14.922126Z","signature_b64":"qiFjftzaFaL50fHfpPWCLKUCWZhKK3O00RuSx+0caM4QDJaJokJl44J0AC2MLQiWCynqeZAGdIpG9QNe+MZUAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4345db890f006e89e92845d1d143368bcdd6ea4083f3e0833e8d268f019a150f","last_reissued_at":"2026-07-05T03:31:14.921563Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:31:14.921563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2110.01644","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":"2026-07-05T03:31:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b7c3sBmhgyWMlvV2lq2xYOY6obfDrZyY8aMtvJYxD6tHEw5g8BJrut7M8GinLJwbcHsA4MRoadFsPGgnOnseBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T20:25:47.746146Z"},"content_sha256":"1df9b7a599b37f977fb7ced521832753bfa7e2897a1b45f07c4413e5bc6ee0f1","schema_version":"1.0","event_id":"sha256:1df9b7a599b37f977fb7ced521832753bfa7e2897a1b45f07c4413e5bc6ee0f1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:INC5XCIPABXIT2JIIXI5CQZWRP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pixel-Level Bijective Matching for Video Object Segmentation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Heansung Lee, Minjung Kim, Sangyoun Lee, Suhwan Cho, Sungjun Jang","submitted_at":"2021-10-04T18:15:45Z","abstract_excerpt":"Semi-supervised video object segmentation (VOS) aims to track the designated objects present in the initial frame of a video at the pixel level. To fully exploit the appearance information of an object, pixel-level feature matching is widely used in VOS. Conventional feature matching runs in a surjective manner, i.e., only the best matches from the query frame to the reference frame are considered. Each location in the query frame refers to the optimal location in the reference frame regardless of how often each reference frame location is referenced. This works well in most cases and is robus"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.01644","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2110.01644/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":"2026-07-05T03:31:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8H2zlIpzRsNGvqmRN1F3+OLE2x2O4ydXysqLinQYfeY3FCPnMG0LqNZ3SOknez4SFuHwPPgJb3cXVW+vEdCrCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T20:25:47.746702Z"},"content_sha256":"1d5a9b2b94ab64bf565ef5afd319543b886eb26ce82b97d707f552d0d60fc07c","schema_version":"1.0","event_id":"sha256:1d5a9b2b94ab64bf565ef5afd319543b886eb26ce82b97d707f552d0d60fc07c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/INC5XCIPABXIT2JIIXI5CQZWRP/bundle.json","state_url":"https://pith.science/pith/INC5XCIPABXIT2JIIXI5CQZWRP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/INC5XCIPABXIT2JIIXI5CQZWRP/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":"2026-08-05T20:25:47Z","links":{"resolver":"https://pith.science/pith/INC5XCIPABXIT2JIIXI5CQZWRP","bundle":"https://pith.science/pith/INC5XCIPABXIT2JIIXI5CQZWRP/bundle.json","state":"https://pith.science/pith/INC5XCIPABXIT2JIIXI5CQZWRP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/INC5XCIPABXIT2JIIXI5CQZWRP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:INC5XCIPABXIT2JIIXI5CQZWRP","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":"8b1d6a5f29d64e0f11a913660dfed125b96a96304587bcb7f0a2ef2f936ed47d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-10-04T18:15:45Z","title_canon_sha256":"c6a20fa3f577f67aafa19e8db71d2426438ab14101bafe1d22a3cac12e4b303d"},"schema_version":"1.0","source":{"id":"2110.01644","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2110.01644","created_at":"2026-07-05T03:31:14Z"},{"alias_kind":"arxiv_version","alias_value":"2110.01644v3","created_at":"2026-07-05T03:31:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.01644","created_at":"2026-07-05T03:31:14Z"},{"alias_kind":"pith_short_12","alias_value":"INC5XCIPABXI","created_at":"2026-07-05T03:31:14Z"},{"alias_kind":"pith_short_16","alias_value":"INC5XCIPABXIT2JI","created_at":"2026-07-05T03:31:14Z"},{"alias_kind":"pith_short_8","alias_value":"INC5XCIP","created_at":"2026-07-05T03:31:14Z"}],"graph_snapshots":[{"event_id":"sha256:1d5a9b2b94ab64bf565ef5afd319543b886eb26ce82b97d707f552d0d60fc07c","target":"graph","created_at":"2026-07-05T03:31:14Z","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/2110.01644/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Semi-supervised video object segmentation (VOS) aims to track the designated objects present in the initial frame of a video at the pixel level. To fully exploit the appearance information of an object, pixel-level feature matching is widely used in VOS. Conventional feature matching runs in a surjective manner, i.e., only the best matches from the query frame to the reference frame are considered. Each location in the query frame refers to the optimal location in the reference frame regardless of how often each reference frame location is referenced. This works well in most cases and is robus","authors_text":"Heansung Lee, Minjung Kim, Sangyoun Lee, Suhwan Cho, Sungjun Jang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-10-04T18:15:45Z","title":"Pixel-Level Bijective Matching for Video Object Segmentation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.01644","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":"sha256:1df9b7a599b37f977fb7ced521832753bfa7e2897a1b45f07c4413e5bc6ee0f1","target":"record","created_at":"2026-07-05T03:31:14Z","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":"8b1d6a5f29d64e0f11a913660dfed125b96a96304587bcb7f0a2ef2f936ed47d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-10-04T18:15:45Z","title_canon_sha256":"c6a20fa3f577f67aafa19e8db71d2426438ab14101bafe1d22a3cac12e4b303d"},"schema_version":"1.0","source":{"id":"2110.01644","kind":"arxiv","version":3}},"canonical_sha256":"4345db890f006e89e92845d1d143368bcdd6ea4083f3e0833e8d268f019a150f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4345db890f006e89e92845d1d143368bcdd6ea4083f3e0833e8d268f019a150f","first_computed_at":"2026-07-05T03:31:14.921563Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:31:14.921563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qiFjftzaFaL50fHfpPWCLKUCWZhKK3O00RuSx+0caM4QDJaJokJl44J0AC2MLQiWCynqeZAGdIpG9QNe+MZUAg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:31:14.922126Z","signed_message":"canonical_sha256_bytes"},"source_id":"2110.01644","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1df9b7a599b37f977fb7ced521832753bfa7e2897a1b45f07c4413e5bc6ee0f1","sha256:1d5a9b2b94ab64bf565ef5afd319543b886eb26ce82b97d707f552d0d60fc07c"],"state_sha256":"c1a6903d7dfb328321d871dfc500340a8fd19200d7245d5cdd47c2e84ed41caa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6i771fwQ9fHOqdkUIEZKnvJJMISGWrIQpXc0x2R78ADwMG8Zqda/TSHsOAcsSsXNdpajof6ROy1zgNTa0wu3CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T20:25:47.751664Z","bundle_sha256":"c55180ef680be99b8da591431a1b5cafff362cd78314d680e9775c5c80329441"}}