{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:42V54SCMYD375RCZLNKQNQYFE6","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":"43a2a6274ca6fef97f5a1b00b615c8d2c46253a2d19c1660322aced8857c2631","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-07-23T16:13:27Z","title_canon_sha256":"1b5810f5b214058d6c18c50641aa2a98bfe1e7d3c9a11cebd1ceb0104626c219"},"schema_version":"1.0","source":{"id":"1807.08696","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.08696","created_at":"2026-05-18T00:10:04Z"},{"alias_kind":"arxiv_version","alias_value":"1807.08696v1","created_at":"2026-05-18T00:10:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.08696","created_at":"2026-05-18T00:10:04Z"},{"alias_kind":"pith_short_12","alias_value":"42V54SCMYD37","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"42V54SCMYD375RCZ","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"42V54SCM","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:aa2894f3d60cfc77aa0a9652ddda6471224f41fd76dbc1bbc4dce259be6b0681","target":"graph","created_at":"2026-05-18T00:10:04Z","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"},"paper":{"abstract_excerpt":"This paper addresses the problem of photometric stereo for non-Lambertian surfaces. Existing approaches often adopt simplified reflectance models to make the problem more tractable, but this greatly hinders their applications on real-world objects. In this paper, we propose a deep fully convolutional network, called PS-FCN, that takes an arbitrary number of images of a static object captured under different light directions with a fixed camera as input, and predicts a normal map of the object in a fast feed-forward pass. Unlike the recently proposed learning based method, PS-FCN does not requi","authors_text":"Guanying Chen, Kai Han, Kwan-Yee K. Wong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-07-23T16:13:27Z","title":"PS-FCN: A Flexible Learning Framework for Photometric Stereo"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.08696","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:d0e29512515c8a1b6fbeacb81df6cc6886eea743cbb73c9bbad7a171596f7415","target":"record","created_at":"2026-05-18T00:10:04Z","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":"43a2a6274ca6fef97f5a1b00b615c8d2c46253a2d19c1660322aced8857c2631","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-07-23T16:13:27Z","title_canon_sha256":"1b5810f5b214058d6c18c50641aa2a98bfe1e7d3c9a11cebd1ceb0104626c219"},"schema_version":"1.0","source":{"id":"1807.08696","kind":"arxiv","version":1}},"canonical_sha256":"e6abde484cc0f7fec4595b5506c305278db3d55fbdaa8da0d2d022f1bd163cf4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e6abde484cc0f7fec4595b5506c305278db3d55fbdaa8da0d2d022f1bd163cf4","first_computed_at":"2026-05-18T00:10:04.990660Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:04.990660Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/Xia4lsUESxAMmkX9AGBac+MW20poEGRrEi+tctySzNyKd5BdqxwnHSbIm2UTyYP3up8Za/BJo2VK0P/FrF1Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:04.991168Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.08696","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d0e29512515c8a1b6fbeacb81df6cc6886eea743cbb73c9bbad7a171596f7415","sha256:aa2894f3d60cfc77aa0a9652ddda6471224f41fd76dbc1bbc4dce259be6b0681"],"state_sha256":"3632cc6953eb5a6e64981e841b08612bfaf6e30541422e0a0e1d0b5a289117e9"}