{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:GHR5Q3GFW2IFNDYAH6Q2IEXNS4","short_pith_number":"pith:GHR5Q3GF","canonical_record":{"source":{"id":"1611.06155","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-11-18T16:58:28Z","cross_cats_sorted":[],"title_canon_sha256":"58736c15b9391ab65d4d4b5b6fc31dd21bd0ee7399a6a4887d481980bea46280","abstract_canon_sha256":"61f65b57dfe973f42190ec2e8965ac497b50a1a0c061b6a4719e4c18c4d3e600"},"schema_version":"1.0"},"canonical_sha256":"31e3d86cc5b690568f003fa1a412ed9704321543ed134a709ef09b72e75cab45","source":{"kind":"arxiv","id":"1611.06155","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.06155","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"arxiv_version","alias_value":"1611.06155v2","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.06155","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"pith_short_12","alias_value":"GHR5Q3GFW2IF","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GHR5Q3GFW2IFNDYA","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GHR5Q3GF","created_at":"2026-05-18T12:30:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:GHR5Q3GFW2IFNDYAH6Q2IEXNS4","target":"record","payload":{"canonical_record":{"source":{"id":"1611.06155","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-11-18T16:58:28Z","cross_cats_sorted":[],"title_canon_sha256":"58736c15b9391ab65d4d4b5b6fc31dd21bd0ee7399a6a4887d481980bea46280","abstract_canon_sha256":"61f65b57dfe973f42190ec2e8965ac497b50a1a0c061b6a4719e4c18c4d3e600"},"schema_version":"1.0"},"canonical_sha256":"31e3d86cc5b690568f003fa1a412ed9704321543ed134a709ef09b72e75cab45","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:50:18.117177Z","signature_b64":"JqBws9VvR32K+B8Aj7GrUzmyZi88YTG1nSyfyhgM4TWpueLEcs+PZUNyO3OOTP7wiwOEKxf6fw+s6PqeiZCtDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"31e3d86cc5b690568f003fa1a412ed9704321543ed134a709ef09b72e75cab45","last_reissued_at":"2026-05-18T00:50:18.116561Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:50:18.116561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.06155","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:50:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iJxtfSIm0KqE0i1qJybJ1MmyOAarQxIMHTwRBNKkS1qfusIjigWosGe+ww/O1b7YwlOTKgjOAOiBjfQD1k/yAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T06:09:48.882377Z"},"content_sha256":"dcf6ce856373ee6bf8ccfc2ff6235b88eb4fb73e45339c63130861a6741411df","schema_version":"1.0","event_id":"sha256:dcf6ce856373ee6bf8ccfc2ff6235b88eb4fb73e45339c63130861a6741411df"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:GHR5Q3GFW2IFNDYAH6Q2IEXNS4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Assessing the quality of restored images in optical long-baseline interferometry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"\\'Eric Thi\\'ebaut, Nuno Gomes, Paulo J. V. Garcia","submitted_at":"2016-11-18T16:58:28Z","abstract_excerpt":"Assessing the quality of aperture synthesis maps is relevant for benchmarking image reconstruction algorithms, for the scientific exploitation of data from optical long-baseline interferometers, and for the design/upgrade of new/existing interferometric imaging facilities. Although metrics have been proposed in these contexts, no systematic study has been conducted on the selection of a robust metric for quality assessment. This article addresses the question: what is the best metric to assess the quality of a reconstructed image? It starts by considering several metrics, and selecting a few b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.06155","kind":"arxiv","version":2},"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":"2026-05-18T00:50:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nNX3+ZOcxP0rfoAn7WNLzuzZIhrae+dGtSTIDRRXMWxO6u4Cc436LbLk4rl83FKb6Mnc62FhfijFfJm8XMJlDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T06:09:48.883014Z"},"content_sha256":"cd7c68071abab442b6b830a38942818c01bca00103a164300853f0072763e12d","schema_version":"1.0","event_id":"sha256:cd7c68071abab442b6b830a38942818c01bca00103a164300853f0072763e12d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GHR5Q3GFW2IFNDYAH6Q2IEXNS4/bundle.json","state_url":"https://pith.science/pith/GHR5Q3GFW2IFNDYAH6Q2IEXNS4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GHR5Q3GFW2IFNDYAH6Q2IEXNS4/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":"2026-06-04T06:09:48Z","links":{"resolver":"https://pith.science/pith/GHR5Q3GFW2IFNDYAH6Q2IEXNS4","bundle":"https://pith.science/pith/GHR5Q3GFW2IFNDYAH6Q2IEXNS4/bundle.json","state":"https://pith.science/pith/GHR5Q3GFW2IFNDYAH6Q2IEXNS4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GHR5Q3GFW2IFNDYAH6Q2IEXNS4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:GHR5Q3GFW2IFNDYAH6Q2IEXNS4","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":"61f65b57dfe973f42190ec2e8965ac497b50a1a0c061b6a4719e4c18c4d3e600","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-11-18T16:58:28Z","title_canon_sha256":"58736c15b9391ab65d4d4b5b6fc31dd21bd0ee7399a6a4887d481980bea46280"},"schema_version":"1.0","source":{"id":"1611.06155","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.06155","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"arxiv_version","alias_value":"1611.06155v2","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.06155","created_at":"2026-05-18T00:50:18Z"},{"alias_kind":"pith_short_12","alias_value":"GHR5Q3GFW2IF","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GHR5Q3GFW2IFNDYA","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GHR5Q3GF","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:cd7c68071abab442b6b830a38942818c01bca00103a164300853f0072763e12d","target":"graph","created_at":"2026-05-18T00:50:18Z","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":"Assessing the quality of aperture synthesis maps is relevant for benchmarking image reconstruction algorithms, for the scientific exploitation of data from optical long-baseline interferometers, and for the design/upgrade of new/existing interferometric imaging facilities. Although metrics have been proposed in these contexts, no systematic study has been conducted on the selection of a robust metric for quality assessment. This article addresses the question: what is the best metric to assess the quality of a reconstructed image? It starts by considering several metrics, and selecting a few b","authors_text":"\\'Eric Thi\\'ebaut, Nuno Gomes, Paulo J. V. Garcia","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-11-18T16:58:28Z","title":"Assessing the quality of restored images in optical long-baseline interferometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.06155","kind":"arxiv","version":2},"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:dcf6ce856373ee6bf8ccfc2ff6235b88eb4fb73e45339c63130861a6741411df","target":"record","created_at":"2026-05-18T00:50:18Z","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":"61f65b57dfe973f42190ec2e8965ac497b50a1a0c061b6a4719e4c18c4d3e600","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-11-18T16:58:28Z","title_canon_sha256":"58736c15b9391ab65d4d4b5b6fc31dd21bd0ee7399a6a4887d481980bea46280"},"schema_version":"1.0","source":{"id":"1611.06155","kind":"arxiv","version":2}},"canonical_sha256":"31e3d86cc5b690568f003fa1a412ed9704321543ed134a709ef09b72e75cab45","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31e3d86cc5b690568f003fa1a412ed9704321543ed134a709ef09b72e75cab45","first_computed_at":"2026-05-18T00:50:18.116561Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:18.116561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JqBws9VvR32K+B8Aj7GrUzmyZi88YTG1nSyfyhgM4TWpueLEcs+PZUNyO3OOTP7wiwOEKxf6fw+s6PqeiZCtDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:18.117177Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.06155","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dcf6ce856373ee6bf8ccfc2ff6235b88eb4fb73e45339c63130861a6741411df","sha256:cd7c68071abab442b6b830a38942818c01bca00103a164300853f0072763e12d"],"state_sha256":"d26669bb18b85caa0893c3c0f1cc4524a27391fd66141d4395986a6f1fea0263"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tPAo/3wVSXz8BjgaFiwBVirGJxHUgIcZDQnp/uL0lKdzwF8fvfQlkB/TWlmChZ9Ye8j2bck7IS7s8TzI43GsBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T06:09:48.886333Z","bundle_sha256":"3790a50b09a37407cb2153083aae495ae20111bb97473900083b155192c85432"}}