{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:OYJB4RSY6EU4GESFWRWSSTLASX","short_pith_number":"pith:OYJB4RSY","canonical_record":{"source":{"id":"1907.11341","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-07-26T00:30:36Z","cross_cats_sorted":["cs.CV","cs.LG"],"title_canon_sha256":"d8d503a8cc76e3dd694ed968dc3e685f532b9113de53caea6456df8f7db9edb6","abstract_canon_sha256":"40bc792876f51fde8ab491af17bf702cdde63547626693c6ff22571271d5c72a"},"schema_version":"1.0"},"canonical_sha256":"76121e4658f129c31245b46d294d6095cd69d2aca186dfa4cea8b64409454288","source":{"kind":"arxiv","id":"1907.11341","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.11341","created_at":"2026-05-17T23:39:29Z"},{"alias_kind":"arxiv_version","alias_value":"1907.11341v1","created_at":"2026-05-17T23:39:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.11341","created_at":"2026-05-17T23:39:29Z"},{"alias_kind":"pith_short_12","alias_value":"OYJB4RSY6EU4","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OYJB4RSY6EU4GESF","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OYJB4RSY","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:OYJB4RSY6EU4GESFWRWSSTLASX","target":"record","payload":{"canonical_record":{"source":{"id":"1907.11341","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-07-26T00:30:36Z","cross_cats_sorted":["cs.CV","cs.LG"],"title_canon_sha256":"d8d503a8cc76e3dd694ed968dc3e685f532b9113de53caea6456df8f7db9edb6","abstract_canon_sha256":"40bc792876f51fde8ab491af17bf702cdde63547626693c6ff22571271d5c72a"},"schema_version":"1.0"},"canonical_sha256":"76121e4658f129c31245b46d294d6095cd69d2aca186dfa4cea8b64409454288","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:39:29.397417Z","signature_b64":"PZFag/lVuhP1Fe+mUOxs7oQgYEvb+0txwg7aKz4/0JkGYZs7etKExf+XCf1SMsL3L4aWqjOdK0sSfKlairHeDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"76121e4658f129c31245b46d294d6095cd69d2aca186dfa4cea8b64409454288","last_reissued_at":"2026-05-17T23:39:29.396715Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:39:29.396715Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.11341","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":"2026-05-17T23:39:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eO36Pou3njFwMN4EaXCbf0H66o8mdpKa798j+pOFwSygA0cCU2AL/FlwSODxbA9kEdR17k7hWaEtG6o+4aHCDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T08:32:48.727394Z"},"content_sha256":"d3e7c60b3400b1aea78a28c8fcbe1f93ae59da302ff4e29c58dfb61d88c5b678","schema_version":"1.0","event_id":"sha256:d3e7c60b3400b1aea78a28c8fcbe1f93ae59da302ff4e29c58dfb61d88c5b678"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:OYJB4RSY6EU4GESFWRWSSTLASX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Image Enhancement by Recurrently-trained Super-resolution Network","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV","cs.LG"],"primary_cat":"eess.IV","authors_text":"Nojun Kwak, Saem Park","submitted_at":"2019-07-26T00:30:36Z","abstract_excerpt":"We introduce a new learning strategy for image enhancement by recurrently training the same simple superresolution (SR) network multiple times. After initially training an SR network by using pairs of a corrupted low resolution (LR) image and an original image, the proposed method makes use of the trained SR network to generate new high resolution (HR) images with a doubled resolution from the original uncorrupted images. Then, the new HR images are downscaled to the original resolution, which work as target images for the SR network in the next stage. The newly generated HR images by the repe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.11341","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":"2026-05-17T23:39:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kalv6Ier5y027qei8gIrtS6Ntx3tumtMlEn85rjnqO2VCE+eTEyjg7T00VGfTwBmJSR+7/f5JeWU8aMpY6P1CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T08:32:48.727750Z"},"content_sha256":"105ebbe806616bafaefca8fee56f2a977618045d05a76b48dd173d73f8862794","schema_version":"1.0","event_id":"sha256:105ebbe806616bafaefca8fee56f2a977618045d05a76b48dd173d73f8862794"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OYJB4RSY6EU4GESFWRWSSTLASX/bundle.json","state_url":"https://pith.science/pith/OYJB4RSY6EU4GESFWRWSSTLASX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OYJB4RSY6EU4GESFWRWSSTLASX/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":"2026-06-03T08:32:48Z","links":{"resolver":"https://pith.science/pith/OYJB4RSY6EU4GESFWRWSSTLASX","bundle":"https://pith.science/pith/OYJB4RSY6EU4GESFWRWSSTLASX/bundle.json","state":"https://pith.science/pith/OYJB4RSY6EU4GESFWRWSSTLASX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OYJB4RSY6EU4GESFWRWSSTLASX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:OYJB4RSY6EU4GESFWRWSSTLASX","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":"40bc792876f51fde8ab491af17bf702cdde63547626693c6ff22571271d5c72a","cross_cats_sorted":["cs.CV","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-07-26T00:30:36Z","title_canon_sha256":"d8d503a8cc76e3dd694ed968dc3e685f532b9113de53caea6456df8f7db9edb6"},"schema_version":"1.0","source":{"id":"1907.11341","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.11341","created_at":"2026-05-17T23:39:29Z"},{"alias_kind":"arxiv_version","alias_value":"1907.11341v1","created_at":"2026-05-17T23:39:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.11341","created_at":"2026-05-17T23:39:29Z"},{"alias_kind":"pith_short_12","alias_value":"OYJB4RSY6EU4","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OYJB4RSY6EU4GESF","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OYJB4RSY","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:105ebbe806616bafaefca8fee56f2a977618045d05a76b48dd173d73f8862794","target":"graph","created_at":"2026-05-17T23:39:29Z","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":"We introduce a new learning strategy for image enhancement by recurrently training the same simple superresolution (SR) network multiple times. After initially training an SR network by using pairs of a corrupted low resolution (LR) image and an original image, the proposed method makes use of the trained SR network to generate new high resolution (HR) images with a doubled resolution from the original uncorrupted images. Then, the new HR images are downscaled to the original resolution, which work as target images for the SR network in the next stage. The newly generated HR images by the repe","authors_text":"Nojun Kwak, Saem Park","cross_cats":["cs.CV","cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-07-26T00:30:36Z","title":"Image Enhancement by Recurrently-trained Super-resolution Network"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.11341","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:d3e7c60b3400b1aea78a28c8fcbe1f93ae59da302ff4e29c58dfb61d88c5b678","target":"record","created_at":"2026-05-17T23:39:29Z","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":"40bc792876f51fde8ab491af17bf702cdde63547626693c6ff22571271d5c72a","cross_cats_sorted":["cs.CV","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-07-26T00:30:36Z","title_canon_sha256":"d8d503a8cc76e3dd694ed968dc3e685f532b9113de53caea6456df8f7db9edb6"},"schema_version":"1.0","source":{"id":"1907.11341","kind":"arxiv","version":1}},"canonical_sha256":"76121e4658f129c31245b46d294d6095cd69d2aca186dfa4cea8b64409454288","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"76121e4658f129c31245b46d294d6095cd69d2aca186dfa4cea8b64409454288","first_computed_at":"2026-05-17T23:39:29.396715Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:39:29.396715Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PZFag/lVuhP1Fe+mUOxs7oQgYEvb+0txwg7aKz4/0JkGYZs7etKExf+XCf1SMsL3L4aWqjOdK0sSfKlairHeDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:39:29.397417Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.11341","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d3e7c60b3400b1aea78a28c8fcbe1f93ae59da302ff4e29c58dfb61d88c5b678","sha256:105ebbe806616bafaefca8fee56f2a977618045d05a76b48dd173d73f8862794"],"state_sha256":"d381a7c3af44abc74a3ac451f570785fe2c21f14c37decbc332841d01555c9b9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dX8/aFuODR8FuG/ZvfSQUGbtcfjrgRZkXHkCxBVLPGuy6GmT9iHVbilsEw+Ly9/QdWHWe4PQNIkcSDvb5AU5BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T08:32:48.729780Z","bundle_sha256":"ea68c8f3830dcf03e7106e847c086a7833e92e32459325d86c009d8a8eab2d0b"}}