{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:ER2JSVY5AHYTJDLWRN6C7QUP5N","short_pith_number":"pith:ER2JSVY5","canonical_record":{"source":{"id":"2209.07619","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2022-09-15T21:34:46Z","cross_cats_sorted":[],"title_canon_sha256":"94a325ad878bba2c7c25e5188d965c96a310faf5947da11b9cf32d57e7658cb1","abstract_canon_sha256":"094e620a4305b3b4c7b8951fe365ac9bfdff26c73bf409c5dc35ff544e079f31"},"schema_version":"1.0"},"canonical_sha256":"247499571d01f1348d768b7c2fc28feb64571c20306e5af4759038e64a0bd80a","source":{"kind":"arxiv","id":"2209.07619","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.07619","created_at":"2026-07-05T04:58:08Z"},{"alias_kind":"arxiv_version","alias_value":"2209.07619v1","created_at":"2026-07-05T04:58:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.07619","created_at":"2026-07-05T04:58:08Z"},{"alias_kind":"pith_short_12","alias_value":"ER2JSVY5AHYT","created_at":"2026-07-05T04:58:08Z"},{"alias_kind":"pith_short_16","alias_value":"ER2JSVY5AHYTJDLW","created_at":"2026-07-05T04:58:08Z"},{"alias_kind":"pith_short_8","alias_value":"ER2JSVY5","created_at":"2026-07-05T04:58:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:ER2JSVY5AHYTJDLWRN6C7QUP5N","target":"record","payload":{"canonical_record":{"source":{"id":"2209.07619","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2022-09-15T21:34:46Z","cross_cats_sorted":[],"title_canon_sha256":"94a325ad878bba2c7c25e5188d965c96a310faf5947da11b9cf32d57e7658cb1","abstract_canon_sha256":"094e620a4305b3b4c7b8951fe365ac9bfdff26c73bf409c5dc35ff544e079f31"},"schema_version":"1.0"},"canonical_sha256":"247499571d01f1348d768b7c2fc28feb64571c20306e5af4759038e64a0bd80a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:58:08.075072Z","signature_b64":"iKAEdAMaqxVyCtGCPROGQNEzrSfHks2RNM7vpJBpl9r0d5Oo0q/pTIjXaAPkpbaJNvHKfPoovnKn5s9S7xQCCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"247499571d01f1348d768b7c2fc28feb64571c20306e5af4759038e64a0bd80a","last_reissued_at":"2026-07-05T04:58:08.074738Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:58:08.074738Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2209.07619","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":"2026-07-05T04:58:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q3/LVw+ubgb52DCKxqQ7CkxzEaRusza+V+2djda/7uqtqw1WVwtCFVTMW8X/U628cDYov1f3F7PQHqmthKiPCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T23:28:21.249303Z"},"content_sha256":"c79c7f8eafc73fa507c868ca19b247c404a7c52d002891c0e63f5956d4b6eb94","schema_version":"1.0","event_id":"sha256:c79c7f8eafc73fa507c868ca19b247c404a7c52d002891c0e63f5956d4b6eb94"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:ER2JSVY5AHYTJDLWRN6C7QUP5N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hierarchical Superquadric Decomposition with Implicit Space Separation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Franc Solina, Jaka \\v{S}ircelj, Peter Peer, Vitomir \\v{S}truc","submitted_at":"2022-09-15T21:34:46Z","abstract_excerpt":"We introduce a new method to reconstruct 3D objects using a set of volumetric primitives, i.e., superquadrics. The method hierarchically decomposes a target 3D object into pairs of superquadrics recovering finer and finer details. While such hierarchical methods have been studied before, we introduce a new way of splitting the object space using only properties of the predicted superquadrics. The method is trained and evaluated on the ShapeNet dataset. The results of our experiments suggest that reasonable reconstructions can be obtained with the proposed approach for a diverse set of objects "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.07619","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/2209.07619/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":"2026-07-05T04:58:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9m9rIWwaJzJwaxN9G7t0ESqrjJsv6X9nCg8lrNh5NvpZa1geJWo8ky4z3uYKzktKrUwfe9et2Bn+mkekS4LjDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T23:28:21.250110Z"},"content_sha256":"5b8610a9951bc7221e798a3d9275cbd79f0ec1c95a76068d89b1d9bc873ad537","schema_version":"1.0","event_id":"sha256:5b8610a9951bc7221e798a3d9275cbd79f0ec1c95a76068d89b1d9bc873ad537"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ER2JSVY5AHYTJDLWRN6C7QUP5N/bundle.json","state_url":"https://pith.science/pith/ER2JSVY5AHYTJDLWRN6C7QUP5N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ER2JSVY5AHYTJDLWRN6C7QUP5N/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":"2026-08-21T23:28:21Z","links":{"resolver":"https://pith.science/pith/ER2JSVY5AHYTJDLWRN6C7QUP5N","bundle":"https://pith.science/pith/ER2JSVY5AHYTJDLWRN6C7QUP5N/bundle.json","state":"https://pith.science/pith/ER2JSVY5AHYTJDLWRN6C7QUP5N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ER2JSVY5AHYTJDLWRN6C7QUP5N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:ER2JSVY5AHYTJDLWRN6C7QUP5N","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":"094e620a4305b3b4c7b8951fe365ac9bfdff26c73bf409c5dc35ff544e079f31","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2022-09-15T21:34:46Z","title_canon_sha256":"94a325ad878bba2c7c25e5188d965c96a310faf5947da11b9cf32d57e7658cb1"},"schema_version":"1.0","source":{"id":"2209.07619","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.07619","created_at":"2026-07-05T04:58:08Z"},{"alias_kind":"arxiv_version","alias_value":"2209.07619v1","created_at":"2026-07-05T04:58:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.07619","created_at":"2026-07-05T04:58:08Z"},{"alias_kind":"pith_short_12","alias_value":"ER2JSVY5AHYT","created_at":"2026-07-05T04:58:08Z"},{"alias_kind":"pith_short_16","alias_value":"ER2JSVY5AHYTJDLW","created_at":"2026-07-05T04:58:08Z"},{"alias_kind":"pith_short_8","alias_value":"ER2JSVY5","created_at":"2026-07-05T04:58:08Z"}],"graph_snapshots":[{"event_id":"sha256:5b8610a9951bc7221e798a3d9275cbd79f0ec1c95a76068d89b1d9bc873ad537","target":"graph","created_at":"2026-07-05T04:58:08Z","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/2209.07619/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We introduce a new method to reconstruct 3D objects using a set of volumetric primitives, i.e., superquadrics. The method hierarchically decomposes a target 3D object into pairs of superquadrics recovering finer and finer details. While such hierarchical methods have been studied before, we introduce a new way of splitting the object space using only properties of the predicted superquadrics. The method is trained and evaluated on the ShapeNet dataset. The results of our experiments suggest that reasonable reconstructions can be obtained with the proposed approach for a diverse set of objects ","authors_text":"Franc Solina, Jaka \\v{S}ircelj, Peter Peer, Vitomir \\v{S}truc","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2022-09-15T21:34:46Z","title":"Hierarchical Superquadric Decomposition with Implicit Space Separation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.07619","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:c79c7f8eafc73fa507c868ca19b247c404a7c52d002891c0e63f5956d4b6eb94","target":"record","created_at":"2026-07-05T04:58:08Z","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":"094e620a4305b3b4c7b8951fe365ac9bfdff26c73bf409c5dc35ff544e079f31","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2022-09-15T21:34:46Z","title_canon_sha256":"94a325ad878bba2c7c25e5188d965c96a310faf5947da11b9cf32d57e7658cb1"},"schema_version":"1.0","source":{"id":"2209.07619","kind":"arxiv","version":1}},"canonical_sha256":"247499571d01f1348d768b7c2fc28feb64571c20306e5af4759038e64a0bd80a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"247499571d01f1348d768b7c2fc28feb64571c20306e5af4759038e64a0bd80a","first_computed_at":"2026-07-05T04:58:08.074738Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:58:08.074738Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iKAEdAMaqxVyCtGCPROGQNEzrSfHks2RNM7vpJBpl9r0d5Oo0q/pTIjXaAPkpbaJNvHKfPoovnKn5s9S7xQCCA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:58:08.075072Z","signed_message":"canonical_sha256_bytes"},"source_id":"2209.07619","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c79c7f8eafc73fa507c868ca19b247c404a7c52d002891c0e63f5956d4b6eb94","sha256:5b8610a9951bc7221e798a3d9275cbd79f0ec1c95a76068d89b1d9bc873ad537"],"state_sha256":"a8d7b8063ab30800a0b943a17748704a1367c46fb0bca16ee95efb25501443d9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+g9fS+s7mcoGMQkoz4NY0ljf3h3LA4VhJspilaT1fBMbB9atOsiAKBGDKmvnAGF4ZRRTfInZEz8nRZuvRF54DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T23:28:21.257209Z","bundle_sha256":"3377181cf1babd3e4ab113f6b51abd7580ee79025fabe219715b8cf66b1d6a77"}}