{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:GRBWQ47RW5I7GSYQXHQPMHMLUC","short_pith_number":"pith:GRBWQ47R","canonical_record":{"source":{"id":"2111.03301","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2021-11-05T07:30:00Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"6524b45183a6e174f644ba5f13185e64fe033e0d851dfdd7a4a37fda55e7662d","abstract_canon_sha256":"cd575e86191a4839ac22f83f57a7934957a2b4cf0e5fab058dcf1987849d02c2"},"schema_version":"1.0"},"canonical_sha256":"34436873f1b751f34b10b9e0f61d8ba0941ddafddd4daf0d94af5b0940cf89f3","source":{"kind":"arxiv","id":"2111.03301","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.03301","created_at":"2026-07-05T03:56:04Z"},{"alias_kind":"arxiv_version","alias_value":"2111.03301v2","created_at":"2026-07-05T03:56:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.03301","created_at":"2026-07-05T03:56:04Z"},{"alias_kind":"pith_short_12","alias_value":"GRBWQ47RW5I7","created_at":"2026-07-05T03:56:04Z"},{"alias_kind":"pith_short_16","alias_value":"GRBWQ47RW5I7GSYQ","created_at":"2026-07-05T03:56:04Z"},{"alias_kind":"pith_short_8","alias_value":"GRBWQ47R","created_at":"2026-07-05T03:56:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:GRBWQ47RW5I7GSYQXHQPMHMLUC","target":"record","payload":{"canonical_record":{"source":{"id":"2111.03301","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2021-11-05T07:30:00Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"6524b45183a6e174f644ba5f13185e64fe033e0d851dfdd7a4a37fda55e7662d","abstract_canon_sha256":"cd575e86191a4839ac22f83f57a7934957a2b4cf0e5fab058dcf1987849d02c2"},"schema_version":"1.0"},"canonical_sha256":"34436873f1b751f34b10b9e0f61d8ba0941ddafddd4daf0d94af5b0940cf89f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:56:04.311661Z","signature_b64":"IegBQAYNj146Wy67Qd/iHdx1gCpeq2Iime5L1BNY5H/n45DtHKtAoZq0Ubc3/E5NrS5NLEnw1NSs7xOE9XekCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34436873f1b751f34b10b9e0f61d8ba0941ddafddd4daf0d94af5b0940cf89f3","last_reissued_at":"2026-07-05T03:56:04.311231Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:56:04.311231Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.03301","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":"2026-07-05T03:56:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UzsgCrIC7LWhz44IsYleEt1cIpuEdnL1HzBW4EqgnCTTnLIk5KzdYkkAODuH/+W9OwQSWodo1YM6nQzEm4rEAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:51:59.396129Z"},"content_sha256":"d9adffe3914e59e103f1a8e69f0df38aafb3b69251a65e192d940649a7ccb84c","schema_version":"1.0","event_id":"sha256:d9adffe3914e59e103f1a8e69f0df38aafb3b69251a65e192d940649a7ccb84c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:GRBWQ47RW5I7GSYQXHQPMHMLUC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Frequency-Aware Physics-Inspired Degradation Model for Real-World Image Super-Resolution","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Guangtao Zhai, Hong Cao, Wang Shen, Yikai Su, Yu Gan, Yuye Ling, ZhenXing Dong","submitted_at":"2021-11-05T07:30:00Z","abstract_excerpt":"Current learning-based single image super-resolution (SISR) algorithms underperform on real data due to the deviation in the assumed degrada-tion process from that in the real-world scenario. Conventional degradation processes consider applying blur, noise, and downsampling (typicallybicubic downsampling) on high-resolution (HR) images to synthesize low-resolution (LR) counterparts. However, few works on degradation modelling have taken the physical aspects of the optical imaging system intoconsideration. In this paper, we analyze the imaging system optically andexploit the characteristics of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.03301","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2111.03301/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":"2026-07-05T03:56:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LTt4Pfx320Ggy1Ztmsc6BMcBHKtZcHCU/nMZYnDcoLi/Dca+SHItF25tw7wA1ISZL/dZhzhoVcLTuJfLEaEcDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:51:59.396618Z"},"content_sha256":"4c085efdb32fc0644f98c283899287f6c0d36bd3cccd3f34853b362c187aa74c","schema_version":"1.0","event_id":"sha256:4c085efdb32fc0644f98c283899287f6c0d36bd3cccd3f34853b362c187aa74c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GRBWQ47RW5I7GSYQXHQPMHMLUC/bundle.json","state_url":"https://pith.science/pith/GRBWQ47RW5I7GSYQXHQPMHMLUC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GRBWQ47RW5I7GSYQXHQPMHMLUC/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":"2026-08-03T19:51:59Z","links":{"resolver":"https://pith.science/pith/GRBWQ47RW5I7GSYQXHQPMHMLUC","bundle":"https://pith.science/pith/GRBWQ47RW5I7GSYQXHQPMHMLUC/bundle.json","state":"https://pith.science/pith/GRBWQ47RW5I7GSYQXHQPMHMLUC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GRBWQ47RW5I7GSYQXHQPMHMLUC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:GRBWQ47RW5I7GSYQXHQPMHMLUC","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":"cd575e86191a4839ac22f83f57a7934957a2b4cf0e5fab058dcf1987849d02c2","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2021-11-05T07:30:00Z","title_canon_sha256":"6524b45183a6e174f644ba5f13185e64fe033e0d851dfdd7a4a37fda55e7662d"},"schema_version":"1.0","source":{"id":"2111.03301","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.03301","created_at":"2026-07-05T03:56:04Z"},{"alias_kind":"arxiv_version","alias_value":"2111.03301v2","created_at":"2026-07-05T03:56:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.03301","created_at":"2026-07-05T03:56:04Z"},{"alias_kind":"pith_short_12","alias_value":"GRBWQ47RW5I7","created_at":"2026-07-05T03:56:04Z"},{"alias_kind":"pith_short_16","alias_value":"GRBWQ47RW5I7GSYQ","created_at":"2026-07-05T03:56:04Z"},{"alias_kind":"pith_short_8","alias_value":"GRBWQ47R","created_at":"2026-07-05T03:56:04Z"}],"graph_snapshots":[{"event_id":"sha256:4c085efdb32fc0644f98c283899287f6c0d36bd3cccd3f34853b362c187aa74c","target":"graph","created_at":"2026-07-05T03:56:04Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2111.03301/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Current learning-based single image super-resolution (SISR) algorithms underperform on real data due to the deviation in the assumed degrada-tion process from that in the real-world scenario. Conventional degradation processes consider applying blur, noise, and downsampling (typicallybicubic downsampling) on high-resolution (HR) images to synthesize low-resolution (LR) counterparts. However, few works on degradation modelling have taken the physical aspects of the optical imaging system intoconsideration. In this paper, we analyze the imaging system optically andexploit the characteristics of ","authors_text":"Guangtao Zhai, Hong Cao, Wang Shen, Yikai Su, Yu Gan, Yuye Ling, ZhenXing Dong","cross_cats":["cs.CV"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2021-11-05T07:30:00Z","title":"Frequency-Aware Physics-Inspired Degradation Model for Real-World Image Super-Resolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.03301","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:d9adffe3914e59e103f1a8e69f0df38aafb3b69251a65e192d940649a7ccb84c","target":"record","created_at":"2026-07-05T03:56:04Z","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":"cd575e86191a4839ac22f83f57a7934957a2b4cf0e5fab058dcf1987849d02c2","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2021-11-05T07:30:00Z","title_canon_sha256":"6524b45183a6e174f644ba5f13185e64fe033e0d851dfdd7a4a37fda55e7662d"},"schema_version":"1.0","source":{"id":"2111.03301","kind":"arxiv","version":2}},"canonical_sha256":"34436873f1b751f34b10b9e0f61d8ba0941ddafddd4daf0d94af5b0940cf89f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34436873f1b751f34b10b9e0f61d8ba0941ddafddd4daf0d94af5b0940cf89f3","first_computed_at":"2026-07-05T03:56:04.311231Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:56:04.311231Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IegBQAYNj146Wy67Qd/iHdx1gCpeq2Iime5L1BNY5H/n45DtHKtAoZq0Ubc3/E5NrS5NLEnw1NSs7xOE9XekCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:56:04.311661Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.03301","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9adffe3914e59e103f1a8e69f0df38aafb3b69251a65e192d940649a7ccb84c","sha256:4c085efdb32fc0644f98c283899287f6c0d36bd3cccd3f34853b362c187aa74c"],"state_sha256":"afd40813cef197b14055d78cd9fb352497dd5d9d94c1415aeb88a44068d1af2f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dPLE1kvvMAx3nSSWvysdf+jn9lIhkSOlO697FqrPuH5790yucxCcaVL2axabfFvGG/ms6FPkDzE1fCpJJFzwAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T19:51:59.400412Z","bundle_sha256":"77490bd589332320ac617c1820730b5d980d65446ba903955eb045e8c7d44d2a"}}