{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:PFBC5YGGBTZ2ZEO6GA3NTAEA3P","short_pith_number":"pith:PFBC5YGG","canonical_record":{"source":{"id":"2206.05344","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2022-06-10T20:30:26Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"a1963574ea32bcf135b3464143f897b290201fb944efaff7e793ae708b7dad90","abstract_canon_sha256":"3a7ede2ba0cbf05a7ab3216fd730f5bd06512323056909eb004dd6b0805d14c4"},"schema_version":"1.0"},"canonical_sha256":"79422ee0c60cf3ac91de3036d98080dbf7cf29cee834e16a1af2738ad8e430fa","source":{"kind":"arxiv","id":"2206.05344","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.05344","created_at":"2026-07-05T04:30:58Z"},{"alias_kind":"arxiv_version","alias_value":"2206.05344v1","created_at":"2026-07-05T04:30:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.05344","created_at":"2026-07-05T04:30:58Z"},{"alias_kind":"pith_short_12","alias_value":"PFBC5YGGBTZ2","created_at":"2026-07-05T04:30:58Z"},{"alias_kind":"pith_short_16","alias_value":"PFBC5YGGBTZ2ZEO6","created_at":"2026-07-05T04:30:58Z"},{"alias_kind":"pith_short_8","alias_value":"PFBC5YGG","created_at":"2026-07-05T04:30:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:PFBC5YGGBTZ2ZEO6GA3NTAEA3P","target":"record","payload":{"canonical_record":{"source":{"id":"2206.05344","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2022-06-10T20:30:26Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"a1963574ea32bcf135b3464143f897b290201fb944efaff7e793ae708b7dad90","abstract_canon_sha256":"3a7ede2ba0cbf05a7ab3216fd730f5bd06512323056909eb004dd6b0805d14c4"},"schema_version":"1.0"},"canonical_sha256":"79422ee0c60cf3ac91de3036d98080dbf7cf29cee834e16a1af2738ad8e430fa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:30:58.315276Z","signature_b64":"isdi/g/9ZNayyrhpCT7XFnNHb47ouIiMMwGxcYN9+3WiQH1uVWXOQnLNz4f/Qe12Sh4SX25cyx0MeLb0RpJZAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"79422ee0c60cf3ac91de3036d98080dbf7cf29cee834e16a1af2738ad8e430fa","last_reissued_at":"2026-07-05T04:30:58.314631Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:30:58.314631Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2206.05344","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":"2026-07-05T04:30:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8TSQKZUZv4V98nbzmg2HKmsxNsAewtJs3mek+d/cQQ7N1xYszASUxe9bstW/BDNypsPbPvAK+Z5350zrzH4vCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T13:44:03.006849Z"},"content_sha256":"d4283d21559e388c9acb232d2cd3ccdd7b7d65a9034a674ba4ea3d4001983889","schema_version":"1.0","event_id":"sha256:d4283d21559e388c9acb232d2cd3ccdd7b7d65a9034a674ba4ea3d4001983889"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:PFBC5YGGBTZ2ZEO6GA3NTAEA3P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Differentiable Rendering of Neural SDFs through Reparameterization","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"cs.GR","authors_text":"Fr\\'edo Durand, Fujun Luan, Gilbert Bernstein, Kalyan Sunkavalli, Micha\\\"el Gharbi, Milo\\v{s} Ha\\v{s}an, Sai Bi, Sai Praveen Bangaru, Tzu-Mao Li, Zexiang Xu","submitted_at":"2022-06-10T20:30:26Z","abstract_excerpt":"We present a method to automatically compute correct gradients with respect to geometric scene parameters in neural SDF renderers. Recent physically-based differentiable rendering techniques for meshes have used edge-sampling to handle discontinuities, particularly at object silhouettes, but SDFs do not have a simple parametric form amenable to sampling. Instead, our approach builds on area-sampling techniques and develops a continuous warping function for SDFs to account for these discontinuities. Our method leverages the distance to surface encoded in an SDF and uses quadrature on sphere tra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.05344","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/2206.05344/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":"2026-07-05T04:30:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N4nojjf2sx9HuKU/AzcyCEcM1naJigUX+cAIFh2mooOzSbaqyFz2D0e0hPVPtMGH3vX7J3KLUEa2smG2TPigCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T13:44:03.007188Z"},"content_sha256":"6eacd8263960516adf5a705d4c8ae25dc4b4eb3fcefa7f53619dd6ff5dda8842","schema_version":"1.0","event_id":"sha256:6eacd8263960516adf5a705d4c8ae25dc4b4eb3fcefa7f53619dd6ff5dda8842"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PFBC5YGGBTZ2ZEO6GA3NTAEA3P/bundle.json","state_url":"https://pith.science/pith/PFBC5YGGBTZ2ZEO6GA3NTAEA3P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PFBC5YGGBTZ2ZEO6GA3NTAEA3P/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":"2026-08-11T13:44:03Z","links":{"resolver":"https://pith.science/pith/PFBC5YGGBTZ2ZEO6GA3NTAEA3P","bundle":"https://pith.science/pith/PFBC5YGGBTZ2ZEO6GA3NTAEA3P/bundle.json","state":"https://pith.science/pith/PFBC5YGGBTZ2ZEO6GA3NTAEA3P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PFBC5YGGBTZ2ZEO6GA3NTAEA3P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:PFBC5YGGBTZ2ZEO6GA3NTAEA3P","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":"3a7ede2ba0cbf05a7ab3216fd730f5bd06512323056909eb004dd6b0805d14c4","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2022-06-10T20:30:26Z","title_canon_sha256":"a1963574ea32bcf135b3464143f897b290201fb944efaff7e793ae708b7dad90"},"schema_version":"1.0","source":{"id":"2206.05344","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.05344","created_at":"2026-07-05T04:30:58Z"},{"alias_kind":"arxiv_version","alias_value":"2206.05344v1","created_at":"2026-07-05T04:30:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.05344","created_at":"2026-07-05T04:30:58Z"},{"alias_kind":"pith_short_12","alias_value":"PFBC5YGGBTZ2","created_at":"2026-07-05T04:30:58Z"},{"alias_kind":"pith_short_16","alias_value":"PFBC5YGGBTZ2ZEO6","created_at":"2026-07-05T04:30:58Z"},{"alias_kind":"pith_short_8","alias_value":"PFBC5YGG","created_at":"2026-07-05T04:30:58Z"}],"graph_snapshots":[{"event_id":"sha256:6eacd8263960516adf5a705d4c8ae25dc4b4eb3fcefa7f53619dd6ff5dda8842","target":"graph","created_at":"2026-07-05T04:30:58Z","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/2206.05344/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a method to automatically compute correct gradients with respect to geometric scene parameters in neural SDF renderers. Recent physically-based differentiable rendering techniques for meshes have used edge-sampling to handle discontinuities, particularly at object silhouettes, but SDFs do not have a simple parametric form amenable to sampling. Instead, our approach builds on area-sampling techniques and develops a continuous warping function for SDFs to account for these discontinuities. Our method leverages the distance to surface encoded in an SDF and uses quadrature on sphere tra","authors_text":"Fr\\'edo Durand, Fujun Luan, Gilbert Bernstein, Kalyan Sunkavalli, Micha\\\"el Gharbi, Milo\\v{s} Ha\\v{s}an, Sai Bi, Sai Praveen Bangaru, Tzu-Mao Li, Zexiang Xu","cross_cats":["cs.CV"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2022-06-10T20:30:26Z","title":"Differentiable Rendering of Neural SDFs through Reparameterization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.05344","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:d4283d21559e388c9acb232d2cd3ccdd7b7d65a9034a674ba4ea3d4001983889","target":"record","created_at":"2026-07-05T04:30:58Z","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":"3a7ede2ba0cbf05a7ab3216fd730f5bd06512323056909eb004dd6b0805d14c4","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2022-06-10T20:30:26Z","title_canon_sha256":"a1963574ea32bcf135b3464143f897b290201fb944efaff7e793ae708b7dad90"},"schema_version":"1.0","source":{"id":"2206.05344","kind":"arxiv","version":1}},"canonical_sha256":"79422ee0c60cf3ac91de3036d98080dbf7cf29cee834e16a1af2738ad8e430fa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"79422ee0c60cf3ac91de3036d98080dbf7cf29cee834e16a1af2738ad8e430fa","first_computed_at":"2026-07-05T04:30:58.314631Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:30:58.314631Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"isdi/g/9ZNayyrhpCT7XFnNHb47ouIiMMwGxcYN9+3WiQH1uVWXOQnLNz4f/Qe12Sh4SX25cyx0MeLb0RpJZAA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:30:58.315276Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.05344","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d4283d21559e388c9acb232d2cd3ccdd7b7d65a9034a674ba4ea3d4001983889","sha256:6eacd8263960516adf5a705d4c8ae25dc4b4eb3fcefa7f53619dd6ff5dda8842"],"state_sha256":"66752af158ef7f777f2a4d0b3dd2d99856c15814ed895e55c4e45bea7f9b3a3f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"coZnsWHEXLYJPRsHFbXAxFDJyW0mAZXuL2XWFSdKKmwyiSLm4anrCW2KbxNobuSY/woYFq3kqcjxs/ZY7FJCDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T13:44:03.009984Z","bundle_sha256":"e429096206d0a660255d1fdafe7c5d4054090c6ca18772deb1b57f6450237ef8"}}