{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:M7J63ANOC7MLGOLYONG4F2F4FF","short_pith_number":"pith:M7J63ANO","canonical_record":{"source":{"id":"2204.08813","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-04-19T11:28:08Z","cross_cats_sorted":["eess.IV"],"title_canon_sha256":"6d125c8ab38d0a1a0d8f52079fef37bacdcd83c0b02743f74200f4eddca8e5ee","abstract_canon_sha256":"496c5cf9e40c832066184d3b8a8591b5cb27d9740cfb3ee60d235e689e9c7367"},"schema_version":"1.0"},"canonical_sha256":"67d3ed81ae17d8b33978734dc2e8bc296d90089861f9a2eee622093fa5da447e","source":{"kind":"arxiv","id":"2204.08813","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.08813","created_at":"2026-07-05T04:16:07Z"},{"alias_kind":"arxiv_version","alias_value":"2204.08813v1","created_at":"2026-07-05T04:16:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.08813","created_at":"2026-07-05T04:16:07Z"},{"alias_kind":"pith_short_12","alias_value":"M7J63ANOC7ML","created_at":"2026-07-05T04:16:07Z"},{"alias_kind":"pith_short_16","alias_value":"M7J63ANOC7MLGOLY","created_at":"2026-07-05T04:16:07Z"},{"alias_kind":"pith_short_8","alias_value":"M7J63ANO","created_at":"2026-07-05T04:16:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:M7J63ANOC7MLGOLYONG4F2F4FF","target":"record","payload":{"canonical_record":{"source":{"id":"2204.08813","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-04-19T11:28:08Z","cross_cats_sorted":["eess.IV"],"title_canon_sha256":"6d125c8ab38d0a1a0d8f52079fef37bacdcd83c0b02743f74200f4eddca8e5ee","abstract_canon_sha256":"496c5cf9e40c832066184d3b8a8591b5cb27d9740cfb3ee60d235e689e9c7367"},"schema_version":"1.0"},"canonical_sha256":"67d3ed81ae17d8b33978734dc2e8bc296d90089861f9a2eee622093fa5da447e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:16:07.673377Z","signature_b64":"F1wv0jEyCBuQdtK8Dvtqu+FFSjBaW59RyAjl3voXB+yEKYDSF5+ahL/l09FbQOOKyKcSIo8qH48HN2lTnlXdCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"67d3ed81ae17d8b33978734dc2e8bc296d90089861f9a2eee622093fa5da447e","last_reissued_at":"2026-07-05T04:16:07.672906Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:16:07.672906Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2204.08813","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":"2026-07-05T04:16:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w2iJwFOALPOyxz+Y9l2AzzCCiX9ObPmwMs4ZExh8wHGdROCMZ2wJI83gjySqIwuHPwGsvk6Jh67JRSzHGkW/Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T17:24:06.164079Z"},"content_sha256":"3a7fd13174e81b2cef84bd0d3502c7db901e81fbfb414a3b6e02f16d2a47fa91","schema_version":"1.0","event_id":"sha256:3a7fd13174e81b2cef84bd0d3502c7db901e81fbfb414a3b6e02f16d2a47fa91"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:M7J63ANOC7MLGOLYONG4F2F4FF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"UID2021: An Underwater Image Dataset for Evaluation of No-reference Quality Assessment Metrics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.IV"],"primary_cat":"cs.CV","authors_text":"Guojia Hou, Huan Yang, Kunqian Li, Yuxuan Li, Zhenkuan Pan","submitted_at":"2022-04-19T11:28:08Z","abstract_excerpt":"Achieving subjective and objective quality assessment of underwater images is of high significance in underwater visual perception and image/video processing. However, the development of underwater image quality assessment (UIQA) is limited for the lack of comprehensive human subjective user study with publicly available dataset and reliable objective UIQA metric. To address this issue, we establish a large-scale underwater image dataset, dubbed UID2021, for evaluating no-reference UIQA metrics. The constructed dataset contains 60 multiply degraded underwater images collected from various sour"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.08813","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/2204.08813/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":"2026-07-05T04:16:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+7Jgq/QpRnfv/9d4Tm7OmyeRcJzIbWVYkZodMemltG5Y5Ymapl5atCODq1cvFPS0PGLmUhghJoiPaZ9JucN2AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T17:24:06.164867Z"},"content_sha256":"6f669be95641d264502a778c9e1f2b7f6f73f914d7424d9e26dbbc9a39ad4d56","schema_version":"1.0","event_id":"sha256:6f669be95641d264502a778c9e1f2b7f6f73f914d7424d9e26dbbc9a39ad4d56"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M7J63ANOC7MLGOLYONG4F2F4FF/bundle.json","state_url":"https://pith.science/pith/M7J63ANOC7MLGOLYONG4F2F4FF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M7J63ANOC7MLGOLYONG4F2F4FF/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":"2026-07-10T17:24:06Z","links":{"resolver":"https://pith.science/pith/M7J63ANOC7MLGOLYONG4F2F4FF","bundle":"https://pith.science/pith/M7J63ANOC7MLGOLYONG4F2F4FF/bundle.json","state":"https://pith.science/pith/M7J63ANOC7MLGOLYONG4F2F4FF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M7J63ANOC7MLGOLYONG4F2F4FF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:M7J63ANOC7MLGOLYONG4F2F4FF","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":"496c5cf9e40c832066184d3b8a8591b5cb27d9740cfb3ee60d235e689e9c7367","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-04-19T11:28:08Z","title_canon_sha256":"6d125c8ab38d0a1a0d8f52079fef37bacdcd83c0b02743f74200f4eddca8e5ee"},"schema_version":"1.0","source":{"id":"2204.08813","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.08813","created_at":"2026-07-05T04:16:07Z"},{"alias_kind":"arxiv_version","alias_value":"2204.08813v1","created_at":"2026-07-05T04:16:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.08813","created_at":"2026-07-05T04:16:07Z"},{"alias_kind":"pith_short_12","alias_value":"M7J63ANOC7ML","created_at":"2026-07-05T04:16:07Z"},{"alias_kind":"pith_short_16","alias_value":"M7J63ANOC7MLGOLY","created_at":"2026-07-05T04:16:07Z"},{"alias_kind":"pith_short_8","alias_value":"M7J63ANO","created_at":"2026-07-05T04:16:07Z"}],"graph_snapshots":[{"event_id":"sha256:6f669be95641d264502a778c9e1f2b7f6f73f914d7424d9e26dbbc9a39ad4d56","target":"graph","created_at":"2026-07-05T04:16:07Z","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/2204.08813/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Achieving subjective and objective quality assessment of underwater images is of high significance in underwater visual perception and image/video processing. However, the development of underwater image quality assessment (UIQA) is limited for the lack of comprehensive human subjective user study with publicly available dataset and reliable objective UIQA metric. To address this issue, we establish a large-scale underwater image dataset, dubbed UID2021, for evaluating no-reference UIQA metrics. The constructed dataset contains 60 multiply degraded underwater images collected from various sour","authors_text":"Guojia Hou, Huan Yang, Kunqian Li, Yuxuan Li, Zhenkuan Pan","cross_cats":["eess.IV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-04-19T11:28:08Z","title":"UID2021: An Underwater Image Dataset for Evaluation of No-reference Quality Assessment Metrics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.08813","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":"sha256:3a7fd13174e81b2cef84bd0d3502c7db901e81fbfb414a3b6e02f16d2a47fa91","target":"record","created_at":"2026-07-05T04:16:07Z","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":"496c5cf9e40c832066184d3b8a8591b5cb27d9740cfb3ee60d235e689e9c7367","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-04-19T11:28:08Z","title_canon_sha256":"6d125c8ab38d0a1a0d8f52079fef37bacdcd83c0b02743f74200f4eddca8e5ee"},"schema_version":"1.0","source":{"id":"2204.08813","kind":"arxiv","version":1}},"canonical_sha256":"67d3ed81ae17d8b33978734dc2e8bc296d90089861f9a2eee622093fa5da447e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67d3ed81ae17d8b33978734dc2e8bc296d90089861f9a2eee622093fa5da447e","first_computed_at":"2026-07-05T04:16:07.672906Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:16:07.672906Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F1wv0jEyCBuQdtK8Dvtqu+FFSjBaW59RyAjl3voXB+yEKYDSF5+ahL/l09FbQOOKyKcSIo8qH48HN2lTnlXdCA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:16:07.673377Z","signed_message":"canonical_sha256_bytes"},"source_id":"2204.08813","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a7fd13174e81b2cef84bd0d3502c7db901e81fbfb414a3b6e02f16d2a47fa91","sha256:6f669be95641d264502a778c9e1f2b7f6f73f914d7424d9e26dbbc9a39ad4d56"],"state_sha256":"3189985e450dcba3180fe03fc7027874d3e719652846acf510c0e03c46ab8153"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P+A5wGcPOxt3bTAYE4jQ8garMJ7B+Q3nJIEE+Se+oceb2216IEN8opkp+Ayy7gZWpvS809QlTfXEVhQgL2Y0AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-10T17:24:06.169385Z","bundle_sha256":"abbb7ad729d4db24e161df2257cf7b39633f90aa6020feb80219a4bca93b6a05"}}