{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:PTIVQBIK745Q7CRIHBV5I26NSY","short_pith_number":"pith:PTIVQBIK","canonical_record":{"source":{"id":"1811.01602","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-05T10:46:27Z","cross_cats_sorted":[],"title_canon_sha256":"251e51478475fde92d3b7656b3d88a93b99b4b626c3e9df8f0d705d908914e6f","abstract_canon_sha256":"f34fcfca81a26410fe6737d34c6a15cd8f2dfc71206696beedbab07f5a8fe4bf"},"schema_version":"1.0"},"canonical_sha256":"7cd158050aff3b0f8a28386bd46bcd9604ec5f5252c2337cd54fcef22eb13e1b","source":{"kind":"arxiv","id":"1811.01602","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.01602","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"arxiv_version","alias_value":"1811.01602v1","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.01602","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"pith_short_12","alias_value":"PTIVQBIK745Q","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"PTIVQBIK745Q7CRI","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"PTIVQBIK","created_at":"2026-05-18T12:32:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:PTIVQBIK745Q7CRIHBV5I26NSY","target":"record","payload":{"canonical_record":{"source":{"id":"1811.01602","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-05T10:46:27Z","cross_cats_sorted":[],"title_canon_sha256":"251e51478475fde92d3b7656b3d88a93b99b4b626c3e9df8f0d705d908914e6f","abstract_canon_sha256":"f34fcfca81a26410fe6737d34c6a15cd8f2dfc71206696beedbab07f5a8fe4bf"},"schema_version":"1.0"},"canonical_sha256":"7cd158050aff3b0f8a28386bd46bcd9604ec5f5252c2337cd54fcef22eb13e1b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:33.825228Z","signature_b64":"0x/GEyClSQycIFsncpLehZ1HQkVXwTO54f9gktUMSHgYWWx8FvF7tQ8imgcmJVCqxAM2ou4LQH1gdpbWVA2/AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7cd158050aff3b0f8a28386bd46bcd9604ec5f5252c2337cd54fcef22eb13e1b","last_reissued_at":"2026-05-18T00:01:33.824607Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:33.824607Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.01602","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:01:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OHEhEBTt4z+dCbl/zd7MAF40Bj79XLf+xXzFngIQMlof6nW5G9u/Jj7lfzkZ8emTcQcMv0+5LoGnog9hvBVaCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:58:53.075872Z"},"content_sha256":"e2f575fd527fad6861ea980a86a28c279ff64c64463071c4ef5a79e415aa1cbe","schema_version":"1.0","event_id":"sha256:e2f575fd527fad6861ea980a86a28c279ff64c64463071c4ef5a79e415aa1cbe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:PTIVQBIK745Q7CRIHBV5I26NSY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Continual Occlusions and Optical Flow Estimation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Jan \\v{S}ochman, Ji\\v{r}\\'i Matas, Michal Neoral","submitted_at":"2018-11-05T10:46:27Z","abstract_excerpt":"Two optical flow estimation problems are addressed: i) occlusion estimation and handling, and ii) estimation from image sequences longer than two frames. The proposed ContinualFlow method estimates occlusions before flow, avoiding the use of flow corrupted by occlusions for their estimation. We show that providing occlusion masks as an additional input to flow estimation improves the standard performance metric by more than 25\\% on both KITTI and Sintel. As a second contribution, a novel method for incorporating information from past frames into flow estimation is introduced. The previous fram"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.01602","kind":"arxiv","version":1},"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":"2026-05-18T00:01:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BZwIgphk45xRb4pM7pQM55Ho4dtPb0AWUFq14ahGAajU+VE1cld1bD03i50UbcSClAV/cB4DN9NW0Tk1Ejj5AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:58:53.076590Z"},"content_sha256":"a85e1fd5482aa4a8a4ebb110767c7e7504d8df2a6ae35d184e5dd3deea7ae567","schema_version":"1.0","event_id":"sha256:a85e1fd5482aa4a8a4ebb110767c7e7504d8df2a6ae35d184e5dd3deea7ae567"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PTIVQBIK745Q7CRIHBV5I26NSY/bundle.json","state_url":"https://pith.science/pith/PTIVQBIK745Q7CRIHBV5I26NSY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PTIVQBIK745Q7CRIHBV5I26NSY/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":"2026-05-30T13:58:53Z","links":{"resolver":"https://pith.science/pith/PTIVQBIK745Q7CRIHBV5I26NSY","bundle":"https://pith.science/pith/PTIVQBIK745Q7CRIHBV5I26NSY/bundle.json","state":"https://pith.science/pith/PTIVQBIK745Q7CRIHBV5I26NSY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PTIVQBIK745Q7CRIHBV5I26NSY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:PTIVQBIK745Q7CRIHBV5I26NSY","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":"f34fcfca81a26410fe6737d34c6a15cd8f2dfc71206696beedbab07f5a8fe4bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-05T10:46:27Z","title_canon_sha256":"251e51478475fde92d3b7656b3d88a93b99b4b626c3e9df8f0d705d908914e6f"},"schema_version":"1.0","source":{"id":"1811.01602","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.01602","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"arxiv_version","alias_value":"1811.01602v1","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.01602","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"pith_short_12","alias_value":"PTIVQBIK745Q","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"PTIVQBIK745Q7CRI","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"PTIVQBIK","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:a85e1fd5482aa4a8a4ebb110767c7e7504d8df2a6ae35d184e5dd3deea7ae567","target":"graph","created_at":"2026-05-18T00:01:33Z","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":"Two optical flow estimation problems are addressed: i) occlusion estimation and handling, and ii) estimation from image sequences longer than two frames. The proposed ContinualFlow method estimates occlusions before flow, avoiding the use of flow corrupted by occlusions for their estimation. We show that providing occlusion masks as an additional input to flow estimation improves the standard performance metric by more than 25\\% on both KITTI and Sintel. As a second contribution, a novel method for incorporating information from past frames into flow estimation is introduced. The previous fram","authors_text":"Jan \\v{S}ochman, Ji\\v{r}\\'i Matas, Michal Neoral","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-05T10:46:27Z","title":"Continual Occlusions and Optical Flow Estimation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.01602","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:e2f575fd527fad6861ea980a86a28c279ff64c64463071c4ef5a79e415aa1cbe","target":"record","created_at":"2026-05-18T00:01:33Z","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":"f34fcfca81a26410fe6737d34c6a15cd8f2dfc71206696beedbab07f5a8fe4bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-05T10:46:27Z","title_canon_sha256":"251e51478475fde92d3b7656b3d88a93b99b4b626c3e9df8f0d705d908914e6f"},"schema_version":"1.0","source":{"id":"1811.01602","kind":"arxiv","version":1}},"canonical_sha256":"7cd158050aff3b0f8a28386bd46bcd9604ec5f5252c2337cd54fcef22eb13e1b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7cd158050aff3b0f8a28386bd46bcd9604ec5f5252c2337cd54fcef22eb13e1b","first_computed_at":"2026-05-18T00:01:33.824607Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:33.824607Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0x/GEyClSQycIFsncpLehZ1HQkVXwTO54f9gktUMSHgYWWx8FvF7tQ8imgcmJVCqxAM2ou4LQH1gdpbWVA2/AA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:33.825228Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.01602","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e2f575fd527fad6861ea980a86a28c279ff64c64463071c4ef5a79e415aa1cbe","sha256:a85e1fd5482aa4a8a4ebb110767c7e7504d8df2a6ae35d184e5dd3deea7ae567"],"state_sha256":"db3f8615dde3df32af98d28a436a3fafc1d3906a0c08451116869fbff4316f74"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wE5BIo1L/MiSkX7sOHPN0Ll1/UNOV59lKfQi2ZSsg/pMLlKREqPiYQugt9H4hMjhyVkmJziTOntMHDddDuMwCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T13:58:53.080437Z","bundle_sha256":"b2f9782aef35930d9ff629071a97c86d862c46669415e7819b3deefa5bd78fb6"}}