{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:UN24BXUTJYXN2GNF6YCHCY5TNX","short_pith_number":"pith:UN24BXUT","canonical_record":{"source":{"id":"1508.01108","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-08-05T15:40:21Z","cross_cats_sorted":[],"title_canon_sha256":"901e89728af2201dbd1a8314c5dc8625daa56b555f8ca233b0e9beddb5b73092","abstract_canon_sha256":"5c105121e500e8bb80c6be22d94ee84e1e7b8361bcb7bf4b47d28ba459b2fbd5"},"schema_version":"1.0"},"canonical_sha256":"a375c0de934e2edd19a5f6047163b36de32114d943e32191a7c57fab0e4ad585","source":{"kind":"arxiv","id":"1508.01108","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.01108","created_at":"2026-05-18T01:22:20Z"},{"alias_kind":"arxiv_version","alias_value":"1508.01108v1","created_at":"2026-05-18T01:22:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.01108","created_at":"2026-05-18T01:22:20Z"},{"alias_kind":"pith_short_12","alias_value":"UN24BXUTJYXN","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UN24BXUTJYXN2GNF","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UN24BXUT","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:UN24BXUTJYXN2GNF6YCHCY5TNX","target":"record","payload":{"canonical_record":{"source":{"id":"1508.01108","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-08-05T15:40:21Z","cross_cats_sorted":[],"title_canon_sha256":"901e89728af2201dbd1a8314c5dc8625daa56b555f8ca233b0e9beddb5b73092","abstract_canon_sha256":"5c105121e500e8bb80c6be22d94ee84e1e7b8361bcb7bf4b47d28ba459b2fbd5"},"schema_version":"1.0"},"canonical_sha256":"a375c0de934e2edd19a5f6047163b36de32114d943e32191a7c57fab0e4ad585","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:20.639523Z","signature_b64":"1BBo0SS/rDWXrPynkQFk1GPv+d+CEu62bnSEoIakurzwPMEZFl/hSytiAjuQ4NE2CSLUGvp99IhSGuJwcybPCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a375c0de934e2edd19a5f6047163b36de32114d943e32191a7c57fab0e4ad585","last_reissued_at":"2026-05-18T01:22:20.638651Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:20.638651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.01108","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":"2026-05-18T01:22:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2UtplYl1lsTI/TUp5st7Yn7wwAhf8n3DbyvYB0UIpoH+0JV++HSxS9X4PnAgjYGNIxPC1lmA0CDXc2TNRFrMAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T03:18:33.846114Z"},"content_sha256":"37db2d6bab36c532c8b4e0ae4f2ea70eed1d62cb7f4c5827f175452cfe21577e","schema_version":"1.0","event_id":"sha256:37db2d6bab36c532c8b4e0ae4f2ea70eed1d62cb7f4c5827f175452cfe21577e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:UN24BXUTJYXN2GNF6YCHCY5TNX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evaluating color texture descriptors under large variations of controlled lighting conditions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Claudio Cusano, Paolo Napoletano, Raimondo Schettini","submitted_at":"2015-08-05T15:40:21Z","abstract_excerpt":"The recognition of color texture under varying lighting conditions is still an open issue. Several features have been proposed for this purpose, ranging from traditional statistical descriptors to features extracted with neural networks. Still, it is not completely clear under what circumstances a feature performs better than the others. In this paper we report an extensive comparison of old and new texture features, with and without a color normalization step, with a particular focus on how they are affected by small and large variation in the lighting conditions. The evaluation is performed "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.01108","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":""},"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":"2026-05-18T01:22:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JqTOji2vr+RzLcOpPwecSq4XcdL7NqO3G48JIzn//tD9zYf+jIEPcCZ+Ss7yIX8UufKRNlFGYORFCtQ2s8IVAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T03:18:33.846483Z"},"content_sha256":"6bd3bd6d87e06315d9945d868cefb35dff53d2f44c82221fb640ec455471eb7a","schema_version":"1.0","event_id":"sha256:6bd3bd6d87e06315d9945d868cefb35dff53d2f44c82221fb640ec455471eb7a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UN24BXUTJYXN2GNF6YCHCY5TNX/bundle.json","state_url":"https://pith.science/pith/UN24BXUTJYXN2GNF6YCHCY5TNX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UN24BXUTJYXN2GNF6YCHCY5TNX/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":"2026-06-02T03:18:33Z","links":{"resolver":"https://pith.science/pith/UN24BXUTJYXN2GNF6YCHCY5TNX","bundle":"https://pith.science/pith/UN24BXUTJYXN2GNF6YCHCY5TNX/bundle.json","state":"https://pith.science/pith/UN24BXUTJYXN2GNF6YCHCY5TNX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UN24BXUTJYXN2GNF6YCHCY5TNX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:UN24BXUTJYXN2GNF6YCHCY5TNX","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":"5c105121e500e8bb80c6be22d94ee84e1e7b8361bcb7bf4b47d28ba459b2fbd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-08-05T15:40:21Z","title_canon_sha256":"901e89728af2201dbd1a8314c5dc8625daa56b555f8ca233b0e9beddb5b73092"},"schema_version":"1.0","source":{"id":"1508.01108","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.01108","created_at":"2026-05-18T01:22:20Z"},{"alias_kind":"arxiv_version","alias_value":"1508.01108v1","created_at":"2026-05-18T01:22:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.01108","created_at":"2026-05-18T01:22:20Z"},{"alias_kind":"pith_short_12","alias_value":"UN24BXUTJYXN","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UN24BXUTJYXN2GNF","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UN24BXUT","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:6bd3bd6d87e06315d9945d868cefb35dff53d2f44c82221fb640ec455471eb7a","target":"graph","created_at":"2026-05-18T01:22:20Z","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":"The recognition of color texture under varying lighting conditions is still an open issue. Several features have been proposed for this purpose, ranging from traditional statistical descriptors to features extracted with neural networks. Still, it is not completely clear under what circumstances a feature performs better than the others. In this paper we report an extensive comparison of old and new texture features, with and without a color normalization step, with a particular focus on how they are affected by small and large variation in the lighting conditions. The evaluation is performed ","authors_text":"Claudio Cusano, Paolo Napoletano, Raimondo Schettini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-08-05T15:40:21Z","title":"Evaluating color texture descriptors under large variations of controlled lighting conditions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.01108","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":"sha256:37db2d6bab36c532c8b4e0ae4f2ea70eed1d62cb7f4c5827f175452cfe21577e","target":"record","created_at":"2026-05-18T01:22:20Z","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":"5c105121e500e8bb80c6be22d94ee84e1e7b8361bcb7bf4b47d28ba459b2fbd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-08-05T15:40:21Z","title_canon_sha256":"901e89728af2201dbd1a8314c5dc8625daa56b555f8ca233b0e9beddb5b73092"},"schema_version":"1.0","source":{"id":"1508.01108","kind":"arxiv","version":1}},"canonical_sha256":"a375c0de934e2edd19a5f6047163b36de32114d943e32191a7c57fab0e4ad585","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a375c0de934e2edd19a5f6047163b36de32114d943e32191a7c57fab0e4ad585","first_computed_at":"2026-05-18T01:22:20.638651Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:20.638651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1BBo0SS/rDWXrPynkQFk1GPv+d+CEu62bnSEoIakurzwPMEZFl/hSytiAjuQ4NE2CSLUGvp99IhSGuJwcybPCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:20.639523Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.01108","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:37db2d6bab36c532c8b4e0ae4f2ea70eed1d62cb7f4c5827f175452cfe21577e","sha256:6bd3bd6d87e06315d9945d868cefb35dff53d2f44c82221fb640ec455471eb7a"],"state_sha256":"281ad86a3f71a3a2ceb6e1e2d96385fcc6950e5f04f60f3ea6971c2890d721ae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uAeO7WjpJDpVbqjAbv6BKflCqI9SXZLvTuzpcNeYLjMJUnxJy5UEU26g8uZDjpHX231zKj536khtQH7cDgQ7Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T03:18:33.848384Z","bundle_sha256":"cb28d91eff0c00b7307468ac59f18e4b2d076b711753b241eb2245b00f9dc2d8"}}