{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:AGEWQTH4J37BGKSZVI5OH5ECYT","short_pith_number":"pith:AGEWQTH4","canonical_record":{"source":{"id":"2111.00140","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-10-30T01:59:39Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"725fc30663253feb9436ce91a83956081be7ea6b6495a4583a2eccaf873d9f0f","abstract_canon_sha256":"304b08d24ea3dc86470973bbb2d3acf92a91d182cf75c212bc6737903f3d2150"},"schema_version":"1.0"},"canonical_sha256":"0189684cfc4efe132a59aa3ae3f482c4f3c186d684296b3fb968f96a60d55f32","source":{"kind":"arxiv","id":"2111.00140","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.00140","created_at":"2026-07-05T03:27:38Z"},{"alias_kind":"arxiv_version","alias_value":"2111.00140v1","created_at":"2026-07-05T03:27:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.00140","created_at":"2026-07-05T03:27:38Z"},{"alias_kind":"pith_short_12","alias_value":"AGEWQTH4J37B","created_at":"2026-07-05T03:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AGEWQTH4J37BGKSZ","created_at":"2026-07-05T03:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AGEWQTH4","created_at":"2026-07-05T03:27:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:AGEWQTH4J37BGKSZVI5OH5ECYT","target":"record","payload":{"canonical_record":{"source":{"id":"2111.00140","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-10-30T01:59:39Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"725fc30663253feb9436ce91a83956081be7ea6b6495a4583a2eccaf873d9f0f","abstract_canon_sha256":"304b08d24ea3dc86470973bbb2d3acf92a91d182cf75c212bc6737903f3d2150"},"schema_version":"1.0"},"canonical_sha256":"0189684cfc4efe132a59aa3ae3f482c4f3c186d684296b3fb968f96a60d55f32","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:27:38.398146Z","signature_b64":"96aYXFzu/ypNf+wyGNL5wH1QFzsffFWbFSMz4ejy/YK8V3RwAiIhSyWhWw4nU+42JeLPBdz5LGDdPpK7lV9rDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0189684cfc4efe132a59aa3ae3f482c4f3c186d684296b3fb968f96a60d55f32","last_reissued_at":"2026-07-05T03:27:38.397636Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:27:38.397636Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.00140","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":"2026-07-05T03:27:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yg4JLRccg6qobVrYy3CaBqdaUzB7adOT99mp8cg6JLgzzyCXVYV+Nv7MGaXGI1kxGgjzDBENld/C2qx1KDW1Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T20:07:58.524583Z"},"content_sha256":"2716c2e74d75133953b2da0829262bc5407d1519e4e425cec9a9347fb609b48d","schema_version":"1.0","event_id":"sha256:2716c2e74d75133953b2da0829262bc5407d1519e4e425cec9a9347fb609b48d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:AGEWQTH4J37BGKSZVI5OH5ECYT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"DIB-R++: Learning to Predict Lighting and Material with a Hybrid Differentiable Renderer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.GR"],"primary_cat":"cs.CV","authors_text":"Clement Fuji Tsang, Joey Litalien, Jun Gao, Or Litany, Sameh Khamis, Sanja Fidler, Wenzheng Chen, Zian Wang","submitted_at":"2021-10-30T01:59:39Z","abstract_excerpt":"We consider the challenging problem of predicting intrinsic object properties from a single image by exploiting differentiable renderers. Many previous learning-based approaches for inverse graphics adopt rasterization-based renderers and assume naive lighting and material models, which often fail to account for non-Lambertian, specular reflections commonly observed in the wild. In this work, we propose DIBR++, a hybrid differentiable renderer which supports these photorealistic effects by combining rasterization and ray-tracing, taking the advantage of their respective strengths -- speed and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.00140","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/2111.00140/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":"2026-07-05T03:27:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bp+GZ1XkdG/pQPXfbaEZp/wRPfLOcHeH7s0m8htSlT5rahMt8iT+vJ7OqI7AM1OQVON/nIlhzxiMOQRy7Rc8CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T20:07:58.525081Z"},"content_sha256":"857e12a7b538e4246c5c5e34114ae5583baf5ec29ef575a1af64c80c644c0af5","schema_version":"1.0","event_id":"sha256:857e12a7b538e4246c5c5e34114ae5583baf5ec29ef575a1af64c80c644c0af5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AGEWQTH4J37BGKSZVI5OH5ECYT/bundle.json","state_url":"https://pith.science/pith/AGEWQTH4J37BGKSZVI5OH5ECYT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AGEWQTH4J37BGKSZVI5OH5ECYT/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":"2026-08-22T20:07:58Z","links":{"resolver":"https://pith.science/pith/AGEWQTH4J37BGKSZVI5OH5ECYT","bundle":"https://pith.science/pith/AGEWQTH4J37BGKSZVI5OH5ECYT/bundle.json","state":"https://pith.science/pith/AGEWQTH4J37BGKSZVI5OH5ECYT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AGEWQTH4J37BGKSZVI5OH5ECYT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:AGEWQTH4J37BGKSZVI5OH5ECYT","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":"304b08d24ea3dc86470973bbb2d3acf92a91d182cf75c212bc6737903f3d2150","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-10-30T01:59:39Z","title_canon_sha256":"725fc30663253feb9436ce91a83956081be7ea6b6495a4583a2eccaf873d9f0f"},"schema_version":"1.0","source":{"id":"2111.00140","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.00140","created_at":"2026-07-05T03:27:38Z"},{"alias_kind":"arxiv_version","alias_value":"2111.00140v1","created_at":"2026-07-05T03:27:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.00140","created_at":"2026-07-05T03:27:38Z"},{"alias_kind":"pith_short_12","alias_value":"AGEWQTH4J37B","created_at":"2026-07-05T03:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AGEWQTH4J37BGKSZ","created_at":"2026-07-05T03:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AGEWQTH4","created_at":"2026-07-05T03:27:38Z"}],"graph_snapshots":[{"event_id":"sha256:857e12a7b538e4246c5c5e34114ae5583baf5ec29ef575a1af64c80c644c0af5","target":"graph","created_at":"2026-07-05T03:27:38Z","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/2111.00140/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider the challenging problem of predicting intrinsic object properties from a single image by exploiting differentiable renderers. Many previous learning-based approaches for inverse graphics adopt rasterization-based renderers and assume naive lighting and material models, which often fail to account for non-Lambertian, specular reflections commonly observed in the wild. In this work, we propose DIBR++, a hybrid differentiable renderer which supports these photorealistic effects by combining rasterization and ray-tracing, taking the advantage of their respective strengths -- speed and ","authors_text":"Clement Fuji Tsang, Joey Litalien, Jun Gao, Or Litany, Sameh Khamis, Sanja Fidler, Wenzheng Chen, Zian Wang","cross_cats":["cs.GR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-10-30T01:59:39Z","title":"DIB-R++: Learning to Predict Lighting and Material with a Hybrid Differentiable Renderer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.00140","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":"sha256:2716c2e74d75133953b2da0829262bc5407d1519e4e425cec9a9347fb609b48d","target":"record","created_at":"2026-07-05T03:27:38Z","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":"304b08d24ea3dc86470973bbb2d3acf92a91d182cf75c212bc6737903f3d2150","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-10-30T01:59:39Z","title_canon_sha256":"725fc30663253feb9436ce91a83956081be7ea6b6495a4583a2eccaf873d9f0f"},"schema_version":"1.0","source":{"id":"2111.00140","kind":"arxiv","version":1}},"canonical_sha256":"0189684cfc4efe132a59aa3ae3f482c4f3c186d684296b3fb968f96a60d55f32","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0189684cfc4efe132a59aa3ae3f482c4f3c186d684296b3fb968f96a60d55f32","first_computed_at":"2026-07-05T03:27:38.397636Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:27:38.397636Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"96aYXFzu/ypNf+wyGNL5wH1QFzsffFWbFSMz4ejy/YK8V3RwAiIhSyWhWw4nU+42JeLPBdz5LGDdPpK7lV9rDA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:27:38.398146Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.00140","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2716c2e74d75133953b2da0829262bc5407d1519e4e425cec9a9347fb609b48d","sha256:857e12a7b538e4246c5c5e34114ae5583baf5ec29ef575a1af64c80c644c0af5"],"state_sha256":"607dda8d533d47ade79d273e4ec7397d15d46d2b9b92a1279fc6488c01c01623"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DXQioZ/0fhBaATcgDA2Vyw+mr5UwQ3t6YZGMQRjSZy/x6IquRxu49cmZ+FqICoH5IQso1bm1yW0r/Q0AO5nbDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T20:07:58.529795Z","bundle_sha256":"3a0c1b8e48884263449ad4e28b01a462f831a48a442518531f635ecf5cac86a0"}}