{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:BYXWDO2RHLSF464ZHLAB76KK75","short_pith_number":"pith:BYXWDO2R","canonical_record":{"source":{"id":"1609.00221","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-09-01T13:08:39Z","cross_cats_sorted":[],"title_canon_sha256":"7b0e1ac612cf1dfef4d2188e700146d004484a46fb0d1627677a64a6e54ac5fa","abstract_canon_sha256":"964c86a26cf241bf0050ffe21d0acb43e3913eab2141332d14b436589d56d320"},"schema_version":"1.0"},"canonical_sha256":"0e2f61bb513ae45e7b993ac01ff94aff721c0f0bde6f526f35ef229bd983fd4b","source":{"kind":"arxiv","id":"1609.00221","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00221","created_at":"2026-05-18T01:06:26Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00221v1","created_at":"2026-05-18T01:06:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00221","created_at":"2026-05-18T01:06:26Z"},{"alias_kind":"pith_short_12","alias_value":"BYXWDO2RHLSF","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"BYXWDO2RHLSF464Z","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"BYXWDO2R","created_at":"2026-05-18T12:30:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:BYXWDO2RHLSF464ZHLAB76KK75","target":"record","payload":{"canonical_record":{"source":{"id":"1609.00221","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-09-01T13:08:39Z","cross_cats_sorted":[],"title_canon_sha256":"7b0e1ac612cf1dfef4d2188e700146d004484a46fb0d1627677a64a6e54ac5fa","abstract_canon_sha256":"964c86a26cf241bf0050ffe21d0acb43e3913eab2141332d14b436589d56d320"},"schema_version":"1.0"},"canonical_sha256":"0e2f61bb513ae45e7b993ac01ff94aff721c0f0bde6f526f35ef229bd983fd4b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:06:26.601419Z","signature_b64":"H/Q61h8SOkOKk9f7341olLqyP2HNi+E/6hlWi1WxNhOg1h3MUvnUy29teb5nIIHC91f3C4E8NKcaO/YEK+PcBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0e2f61bb513ae45e7b993ac01ff94aff721c0f0bde6f526f35ef229bd983fd4b","last_reissued_at":"2026-05-18T01:06:26.600907Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:06:26.600907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.00221","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":"2026-05-18T01:06:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jrlR+SlyWEjcTKLBEmhXxqotXP2ZyHrOV1mg8dQYhamtMuiBwPHwZzL1hPM5vm8uMMYjzQWWh0hBQ6k6ZdU6DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:10:33.745312Z"},"content_sha256":"0a4d1cc527fd7b3ff40be4ece4ed8b7af917aa8846ae19c8708eaaf7558097d4","schema_version":"1.0","event_id":"sha256:0a4d1cc527fd7b3ff40be4ece4ed8b7af917aa8846ae19c8708eaaf7558097d4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:BYXWDO2RHLSF464ZHLAB76KK75","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Segmentation Free Object Discovery in Video","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Alberto Del Bimbo, Claudio Baecchi, Federico Becattini, Giovanni Cuffaro, Lorenzo Seidenari","submitted_at":"2016-09-01T13:08:39Z","abstract_excerpt":"In this paper we present a simple yet effective approach to extend without supervision any object proposal from static images to videos. Unlike previous methods, these spatio-temporal proposals, to which we refer as tracks, are generated relying on little or no visual content by only exploiting bounding boxes spatial correlations through time. The tracks that we obtain are likely to represent objects and are a general-purpose tool to represent meaningful video content for a wide variety of tasks. For unannotated videos, tracks can be used to discover content without any supervision. As further"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00221","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":"2026-05-18T01:06:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rVf8XWznGDHWP0iEb/VIde5f0mpSbJXljBRIi0jPCHsPpBNOC8BsQsAFfSf2Vt2g1tPY8jBQV+cZ21aO24COCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:10:33.746024Z"},"content_sha256":"86081fa8eade7757fffd56e222f4da6e9e4ab96bafd4a7f15b39db93e2d668e9","schema_version":"1.0","event_id":"sha256:86081fa8eade7757fffd56e222f4da6e9e4ab96bafd4a7f15b39db93e2d668e9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BYXWDO2RHLSF464ZHLAB76KK75/bundle.json","state_url":"https://pith.science/pith/BYXWDO2RHLSF464ZHLAB76KK75/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BYXWDO2RHLSF464ZHLAB76KK75/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":"2026-05-31T03:10:33Z","links":{"resolver":"https://pith.science/pith/BYXWDO2RHLSF464ZHLAB76KK75","bundle":"https://pith.science/pith/BYXWDO2RHLSF464ZHLAB76KK75/bundle.json","state":"https://pith.science/pith/BYXWDO2RHLSF464ZHLAB76KK75/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BYXWDO2RHLSF464ZHLAB76KK75/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:BYXWDO2RHLSF464ZHLAB76KK75","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":"964c86a26cf241bf0050ffe21d0acb43e3913eab2141332d14b436589d56d320","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-09-01T13:08:39Z","title_canon_sha256":"7b0e1ac612cf1dfef4d2188e700146d004484a46fb0d1627677a64a6e54ac5fa"},"schema_version":"1.0","source":{"id":"1609.00221","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00221","created_at":"2026-05-18T01:06:26Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00221v1","created_at":"2026-05-18T01:06:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00221","created_at":"2026-05-18T01:06:26Z"},{"alias_kind":"pith_short_12","alias_value":"BYXWDO2RHLSF","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"BYXWDO2RHLSF464Z","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"BYXWDO2R","created_at":"2026-05-18T12:30:09Z"}],"graph_snapshots":[{"event_id":"sha256:86081fa8eade7757fffd56e222f4da6e9e4ab96bafd4a7f15b39db93e2d668e9","target":"graph","created_at":"2026-05-18T01:06:26Z","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 present a simple yet effective approach to extend without supervision any object proposal from static images to videos. Unlike previous methods, these spatio-temporal proposals, to which we refer as tracks, are generated relying on little or no visual content by only exploiting bounding boxes spatial correlations through time. The tracks that we obtain are likely to represent objects and are a general-purpose tool to represent meaningful video content for a wide variety of tasks. For unannotated videos, tracks can be used to discover content without any supervision. As further","authors_text":"Alberto Del Bimbo, Claudio Baecchi, Federico Becattini, Giovanni Cuffaro, Lorenzo Seidenari","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-09-01T13:08:39Z","title":"Segmentation Free Object Discovery in Video"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00221","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":"sha256:0a4d1cc527fd7b3ff40be4ece4ed8b7af917aa8846ae19c8708eaaf7558097d4","target":"record","created_at":"2026-05-18T01:06:26Z","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":"964c86a26cf241bf0050ffe21d0acb43e3913eab2141332d14b436589d56d320","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-09-01T13:08:39Z","title_canon_sha256":"7b0e1ac612cf1dfef4d2188e700146d004484a46fb0d1627677a64a6e54ac5fa"},"schema_version":"1.0","source":{"id":"1609.00221","kind":"arxiv","version":1}},"canonical_sha256":"0e2f61bb513ae45e7b993ac01ff94aff721c0f0bde6f526f35ef229bd983fd4b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0e2f61bb513ae45e7b993ac01ff94aff721c0f0bde6f526f35ef229bd983fd4b","first_computed_at":"2026-05-18T01:06:26.600907Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:26.600907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H/Q61h8SOkOKk9f7341olLqyP2HNi+E/6hlWi1WxNhOg1h3MUvnUy29teb5nIIHC91f3C4E8NKcaO/YEK+PcBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:26.601419Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.00221","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0a4d1cc527fd7b3ff40be4ece4ed8b7af917aa8846ae19c8708eaaf7558097d4","sha256:86081fa8eade7757fffd56e222f4da6e9e4ab96bafd4a7f15b39db93e2d668e9"],"state_sha256":"311265b5e576171f7ddb782a2d9281eed9a7b27b533fde7453f6cce55251ecbb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mBZcYLVgZVH9bver8ABgya/uQ4nXfG9hOqVXhZvgXUaxce0e+3OOfPndLuGEovFWiswzf6LUhX148AgIU8aVAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T03:10:33.749246Z","bundle_sha256":"34fdbd7a0fed688c344d0b22d290f879af21b802d3c9e3ab21e2ec69d1d10636"}}