{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:DCTN36FWWX3VNF2I4E2MZ7DNIL","short_pith_number":"pith:DCTN36FW","canonical_record":{"source":{"id":"2007.08504","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-07-16T17:55:20Z","cross_cats_sorted":[],"title_canon_sha256":"ed4374c17b0bc0219fb9e8daac4974d7002de6bf8cf6c63346e8350eb1b66612","abstract_canon_sha256":"08ae2affe2ed7cbc1e9fd249643ddc373fc6c3e1b03ec1b9f362a89fdca6a1b3"},"schema_version":"1.0"},"canonical_sha256":"18a6ddf8b6b5f7569748e134ccfc6d42d23745c7f71f0522669bf214cda67112","source":{"kind":"arxiv","id":"2007.08504","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.08504","created_at":"2026-07-05T01:19:48Z"},{"alias_kind":"arxiv_version","alias_value":"2007.08504v1","created_at":"2026-07-05T01:19:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.08504","created_at":"2026-07-05T01:19:48Z"},{"alias_kind":"pith_short_12","alias_value":"DCTN36FWWX3V","created_at":"2026-07-05T01:19:48Z"},{"alias_kind":"pith_short_16","alias_value":"DCTN36FWWX3VNF2I","created_at":"2026-07-05T01:19:48Z"},{"alias_kind":"pith_short_8","alias_value":"DCTN36FW","created_at":"2026-07-05T01:19:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:DCTN36FWWX3VNF2I4E2MZ7DNIL","target":"record","payload":{"canonical_record":{"source":{"id":"2007.08504","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-07-16T17:55:20Z","cross_cats_sorted":[],"title_canon_sha256":"ed4374c17b0bc0219fb9e8daac4974d7002de6bf8cf6c63346e8350eb1b66612","abstract_canon_sha256":"08ae2affe2ed7cbc1e9fd249643ddc373fc6c3e1b03ec1b9f362a89fdca6a1b3"},"schema_version":"1.0"},"canonical_sha256":"18a6ddf8b6b5f7569748e134ccfc6d42d23745c7f71f0522669bf214cda67112","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:19:48.196988Z","signature_b64":"W1gwnRjTfTCOqa+kNIfDS8EGIzOsHr9U4EAVzB+vk1ciaD5i8Jr6sp5sxdwI4ZPid5Q/+JwSYMr0BiCep23fDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"18a6ddf8b6b5f7569748e134ccfc6d42d23745c7f71f0522669bf214cda67112","last_reissued_at":"2026-07-05T01:19:48.196599Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:19:48.196599Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.08504","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":"2026-07-05T01:19:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eJT87q+LxtI8IJFmcFV9bOyQ2wG6WUjy1DFNM+okZgYxlOBGkSpyr7bRo5eqxRllqaJaYmXyWxrWfym9/B1SAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T13:26:00.969819Z"},"content_sha256":"9189ad3a9c10de9824069eddc26a08161257d71d91b1e02cd4ada43b1baa5839","schema_version":"1.0","event_id":"sha256:9189ad3a9c10de9824069eddc26a08161257d71d91b1e02cd4ada43b1baa5839"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:DCTN36FWWX3VNF2I4E2MZ7DNIL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Implicit Mesh Reconstruction from Unannotated Image Collections","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Abhinav Gupta, Nilesh Kulkarni, Shubham Tulsiani","submitted_at":"2020-07-16T17:55:20Z","abstract_excerpt":"We present an approach to infer the 3D shape, texture, and camera pose for an object from a single RGB image, using only category-level image collections with foreground masks as supervision. We represent the shape as an image-conditioned implicit function that transforms the surface of a sphere to that of the predicted mesh, while additionally predicting the corresponding texture. To derive supervisory signal for learning, we enforce that: a) our predictions when rendered should explain the available image evidence, and b) the inferred 3D structure should be geometrically consistent with lear"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.08504","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/2007.08504/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":"2026-07-05T01:19:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vqByVKh2CLRAF2K+AV2IqYX6sHsDNCsQt+rkiB7no36WOgEsxf78m3STjQGuykeCFPBf6b5y3C2uurvvQ9jcBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T13:26:00.970197Z"},"content_sha256":"361ea2b68338f5e13cec167a2ab1e924169d4d2fba7c891acf76c11fd803e385","schema_version":"1.0","event_id":"sha256:361ea2b68338f5e13cec167a2ab1e924169d4d2fba7c891acf76c11fd803e385"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DCTN36FWWX3VNF2I4E2MZ7DNIL/bundle.json","state_url":"https://pith.science/pith/DCTN36FWWX3VNF2I4E2MZ7DNIL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DCTN36FWWX3VNF2I4E2MZ7DNIL/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":"2026-07-07T13:26:00Z","links":{"resolver":"https://pith.science/pith/DCTN36FWWX3VNF2I4E2MZ7DNIL","bundle":"https://pith.science/pith/DCTN36FWWX3VNF2I4E2MZ7DNIL/bundle.json","state":"https://pith.science/pith/DCTN36FWWX3VNF2I4E2MZ7DNIL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DCTN36FWWX3VNF2I4E2MZ7DNIL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:DCTN36FWWX3VNF2I4E2MZ7DNIL","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":"08ae2affe2ed7cbc1e9fd249643ddc373fc6c3e1b03ec1b9f362a89fdca6a1b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-07-16T17:55:20Z","title_canon_sha256":"ed4374c17b0bc0219fb9e8daac4974d7002de6bf8cf6c63346e8350eb1b66612"},"schema_version":"1.0","source":{"id":"2007.08504","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.08504","created_at":"2026-07-05T01:19:48Z"},{"alias_kind":"arxiv_version","alias_value":"2007.08504v1","created_at":"2026-07-05T01:19:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.08504","created_at":"2026-07-05T01:19:48Z"},{"alias_kind":"pith_short_12","alias_value":"DCTN36FWWX3V","created_at":"2026-07-05T01:19:48Z"},{"alias_kind":"pith_short_16","alias_value":"DCTN36FWWX3VNF2I","created_at":"2026-07-05T01:19:48Z"},{"alias_kind":"pith_short_8","alias_value":"DCTN36FW","created_at":"2026-07-05T01:19:48Z"}],"graph_snapshots":[{"event_id":"sha256:361ea2b68338f5e13cec167a2ab1e924169d4d2fba7c891acf76c11fd803e385","target":"graph","created_at":"2026-07-05T01:19:48Z","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/2007.08504/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present an approach to infer the 3D shape, texture, and camera pose for an object from a single RGB image, using only category-level image collections with foreground masks as supervision. We represent the shape as an image-conditioned implicit function that transforms the surface of a sphere to that of the predicted mesh, while additionally predicting the corresponding texture. To derive supervisory signal for learning, we enforce that: a) our predictions when rendered should explain the available image evidence, and b) the inferred 3D structure should be geometrically consistent with lear","authors_text":"Abhinav Gupta, Nilesh Kulkarni, Shubham Tulsiani","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-07-16T17:55:20Z","title":"Implicit Mesh Reconstruction from Unannotated Image Collections"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.08504","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":"sha256:9189ad3a9c10de9824069eddc26a08161257d71d91b1e02cd4ada43b1baa5839","target":"record","created_at":"2026-07-05T01:19:48Z","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":"08ae2affe2ed7cbc1e9fd249643ddc373fc6c3e1b03ec1b9f362a89fdca6a1b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-07-16T17:55:20Z","title_canon_sha256":"ed4374c17b0bc0219fb9e8daac4974d7002de6bf8cf6c63346e8350eb1b66612"},"schema_version":"1.0","source":{"id":"2007.08504","kind":"arxiv","version":1}},"canonical_sha256":"18a6ddf8b6b5f7569748e134ccfc6d42d23745c7f71f0522669bf214cda67112","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18a6ddf8b6b5f7569748e134ccfc6d42d23745c7f71f0522669bf214cda67112","first_computed_at":"2026-07-05T01:19:48.196599Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:19:48.196599Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W1gwnRjTfTCOqa+kNIfDS8EGIzOsHr9U4EAVzB+vk1ciaD5i8Jr6sp5sxdwI4ZPid5Q/+JwSYMr0BiCep23fDg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:19:48.196988Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.08504","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9189ad3a9c10de9824069eddc26a08161257d71d91b1e02cd4ada43b1baa5839","sha256:361ea2b68338f5e13cec167a2ab1e924169d4d2fba7c891acf76c11fd803e385"],"state_sha256":"d8fc1882747acfbeeed421d1928bb42354eb61d9414775b2737b55606bbdef97"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kbcj0LqG3oPGuqjaKbQzAr8NySuG3wF+PNFVEfrFigG/fQpQ72I+BXf0cAEdUzmFK6WBSsjuJbMhsRrJ2jPoDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T13:26:00.972253Z","bundle_sha256":"cd7d0e984b02de22a879220980f4f53e7ad6c78f1d6ee81dfa59b2788174e4bc"}}