{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:ALHFMFORUNGD57BSJZ6TE66N5F","short_pith_number":"pith:ALHFMFOR","canonical_record":{"source":{"id":"2105.05592","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2021-05-12T11:10:35Z","cross_cats_sorted":["q-bio.NC"],"title_canon_sha256":"a1beb010ee15f776bd1e01289487cedbaebf6d13215e18ebfa2b11ba85c76af1","abstract_canon_sha256":"94428344a12a14d3996c36abe51881577493ec0aba5a9f85b31a2c6995975cac"},"schema_version":"1.0"},"canonical_sha256":"02ce5615d1a34c3efc324e7d327bcde96cb6012e6204171510f42ea11ebfea8b","source":{"kind":"arxiv","id":"2105.05592","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.05592","created_at":"2026-07-05T02:39:52Z"},{"alias_kind":"arxiv_version","alias_value":"2105.05592v1","created_at":"2026-07-05T02:39:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.05592","created_at":"2026-07-05T02:39:52Z"},{"alias_kind":"pith_short_12","alias_value":"ALHFMFORUNGD","created_at":"2026-07-05T02:39:52Z"},{"alias_kind":"pith_short_16","alias_value":"ALHFMFORUNGD57BS","created_at":"2026-07-05T02:39:52Z"},{"alias_kind":"pith_short_8","alias_value":"ALHFMFOR","created_at":"2026-07-05T02:39:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:ALHFMFORUNGD57BSJZ6TE66N5F","target":"record","payload":{"canonical_record":{"source":{"id":"2105.05592","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2021-05-12T11:10:35Z","cross_cats_sorted":["q-bio.NC"],"title_canon_sha256":"a1beb010ee15f776bd1e01289487cedbaebf6d13215e18ebfa2b11ba85c76af1","abstract_canon_sha256":"94428344a12a14d3996c36abe51881577493ec0aba5a9f85b31a2c6995975cac"},"schema_version":"1.0"},"canonical_sha256":"02ce5615d1a34c3efc324e7d327bcde96cb6012e6204171510f42ea11ebfea8b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:39:52.619243Z","signature_b64":"+2jKX5XAXb/bTLMnuwupmpyvzON2x28D8zOfUc8zziSEHU3QtfPmIDXieNMalEnIUHkDORnfsEIX2bIFYwnuAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"02ce5615d1a34c3efc324e7d327bcde96cb6012e6204171510f42ea11ebfea8b","last_reissued_at":"2026-07-05T02:39:52.618859Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:39:52.618859Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.05592","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":"2026-07-05T02:39:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x+gHx/of1m8mlrt0GqOay83r3RYzI8QHA8ZdQYYblbCKIPhjE486m7ScpYgAEtZJeHLsbdwpOXMHaLuGfKVRCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T07:57:59.475528Z"},"content_sha256":"e3b6bd1e6c880da4b546d102b494a260248787022de68877f5afe5f8768bf57c","schema_version":"1.0","event_id":"sha256:e3b6bd1e6c880da4b546d102b494a260248787022de68877f5afe5f8768bf57c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:ALHFMFORUNGD57BSJZ6TE66N5F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Image interpretation by iterative bottom-up top-down processing","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["q-bio.NC"],"primary_cat":"cs.CV","authors_text":"Adam Yaari, Alona Strugatski, Aviv Netanyahu, Ben-Zion Vatashsky, Hila Levy, Liav Assif, Shimon Ullman","submitted_at":"2021-05-12T11:10:35Z","abstract_excerpt":"Scene understanding requires the extraction and representation of scene components together with their properties and inter-relations. We describe a model in which meaningful scene structures are extracted from the image by an iterative process, combining bottom-up (BU) and top-down (TD) networks, interacting through a symmetric bi-directional communication between them (counter-streams structure). The model constructs a scene representation by the iterative use of three components. The first model component is a BU stream that extracts selected scene elements, properties and relations. The se"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.05592","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2105.05592/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":"2026-07-05T02:39:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"224g3Em3nnp7v3lw8hnI06ptUa5exNryxuUKFfULPG3I1GmVgxKzYnsmbuCYLXMs7jSte6oj5YBQS6UD6VrvAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T07:57:59.476052Z"},"content_sha256":"0808760f3812d98c1da9dfed1f6908dafc1714b5045973c6e873b7ae3f02886e","schema_version":"1.0","event_id":"sha256:0808760f3812d98c1da9dfed1f6908dafc1714b5045973c6e873b7ae3f02886e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ALHFMFORUNGD57BSJZ6TE66N5F/bundle.json","state_url":"https://pith.science/pith/ALHFMFORUNGD57BSJZ6TE66N5F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ALHFMFORUNGD57BSJZ6TE66N5F/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":"2026-08-11T07:57:59Z","links":{"resolver":"https://pith.science/pith/ALHFMFORUNGD57BSJZ6TE66N5F","bundle":"https://pith.science/pith/ALHFMFORUNGD57BSJZ6TE66N5F/bundle.json","state":"https://pith.science/pith/ALHFMFORUNGD57BSJZ6TE66N5F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ALHFMFORUNGD57BSJZ6TE66N5F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:ALHFMFORUNGD57BSJZ6TE66N5F","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":"94428344a12a14d3996c36abe51881577493ec0aba5a9f85b31a2c6995975cac","cross_cats_sorted":["q-bio.NC"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2021-05-12T11:10:35Z","title_canon_sha256":"a1beb010ee15f776bd1e01289487cedbaebf6d13215e18ebfa2b11ba85c76af1"},"schema_version":"1.0","source":{"id":"2105.05592","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.05592","created_at":"2026-07-05T02:39:52Z"},{"alias_kind":"arxiv_version","alias_value":"2105.05592v1","created_at":"2026-07-05T02:39:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.05592","created_at":"2026-07-05T02:39:52Z"},{"alias_kind":"pith_short_12","alias_value":"ALHFMFORUNGD","created_at":"2026-07-05T02:39:52Z"},{"alias_kind":"pith_short_16","alias_value":"ALHFMFORUNGD57BS","created_at":"2026-07-05T02:39:52Z"},{"alias_kind":"pith_short_8","alias_value":"ALHFMFOR","created_at":"2026-07-05T02:39:52Z"}],"graph_snapshots":[{"event_id":"sha256:0808760f3812d98c1da9dfed1f6908dafc1714b5045973c6e873b7ae3f02886e","target":"graph","created_at":"2026-07-05T02:39:52Z","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/2105.05592/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Scene understanding requires the extraction and representation of scene components together with their properties and inter-relations. We describe a model in which meaningful scene structures are extracted from the image by an iterative process, combining bottom-up (BU) and top-down (TD) networks, interacting through a symmetric bi-directional communication between them (counter-streams structure). The model constructs a scene representation by the iterative use of three components. The first model component is a BU stream that extracts selected scene elements, properties and relations. The se","authors_text":"Adam Yaari, Alona Strugatski, Aviv Netanyahu, Ben-Zion Vatashsky, Hila Levy, Liav Assif, Shimon Ullman","cross_cats":["q-bio.NC"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2021-05-12T11:10:35Z","title":"Image interpretation by iterative bottom-up top-down processing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.05592","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:e3b6bd1e6c880da4b546d102b494a260248787022de68877f5afe5f8768bf57c","target":"record","created_at":"2026-07-05T02:39:52Z","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":"94428344a12a14d3996c36abe51881577493ec0aba5a9f85b31a2c6995975cac","cross_cats_sorted":["q-bio.NC"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2021-05-12T11:10:35Z","title_canon_sha256":"a1beb010ee15f776bd1e01289487cedbaebf6d13215e18ebfa2b11ba85c76af1"},"schema_version":"1.0","source":{"id":"2105.05592","kind":"arxiv","version":1}},"canonical_sha256":"02ce5615d1a34c3efc324e7d327bcde96cb6012e6204171510f42ea11ebfea8b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"02ce5615d1a34c3efc324e7d327bcde96cb6012e6204171510f42ea11ebfea8b","first_computed_at":"2026-07-05T02:39:52.618859Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:39:52.618859Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+2jKX5XAXb/bTLMnuwupmpyvzON2x28D8zOfUc8zziSEHU3QtfPmIDXieNMalEnIUHkDORnfsEIX2bIFYwnuAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:39:52.619243Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.05592","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e3b6bd1e6c880da4b546d102b494a260248787022de68877f5afe5f8768bf57c","sha256:0808760f3812d98c1da9dfed1f6908dafc1714b5045973c6e873b7ae3f02886e"],"state_sha256":"b36158a1f615dc089f412881e94ec380211f34225c0c3b53a0fba6ee18c1f262"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rEDWZ6UolS835u0Z3uvrmY68+XmLRWnFoU2RgT7Ryj5oHlBsZbwcu3UVW4GpIJweW+OXR4IseiYZ7NO3kFpYDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T07:57:59.480845Z","bundle_sha256":"85b1527d6a0580da7adb75d086980001b8f80207a96d5e5203061311a27871c9"}}