{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:R6QLXTIZU4S42VGFRQIKSJZ2R7","short_pith_number":"pith:R6QLXTIZ","canonical_record":{"source":{"id":"1511.06834","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-11-21T04:40:59Z","cross_cats_sorted":[],"title_canon_sha256":"62d90ad9128413e5ab8a0c4a65b82949100a17d49e7f3445738475d2b49061b8","abstract_canon_sha256":"6b87f3feaaed6433fc557131000f134299de5ac74ceedd898500d7691cb1ab6b"},"schema_version":"1.0"},"canonical_sha256":"8fa0bbcd19a725cd54c58c10a9273a8fc608651d266f7ab8488f814e5af08375","source":{"kind":"arxiv","id":"1511.06834","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.06834","created_at":"2026-05-18T01:26:17Z"},{"alias_kind":"arxiv_version","alias_value":"1511.06834v1","created_at":"2026-05-18T01:26:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.06834","created_at":"2026-05-18T01:26:17Z"},{"alias_kind":"pith_short_12","alias_value":"R6QLXTIZU4S4","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"R6QLXTIZU4S42VGF","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"R6QLXTIZ","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:R6QLXTIZU4S42VGFRQIKSJZ2R7","target":"record","payload":{"canonical_record":{"source":{"id":"1511.06834","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-11-21T04:40:59Z","cross_cats_sorted":[],"title_canon_sha256":"62d90ad9128413e5ab8a0c4a65b82949100a17d49e7f3445738475d2b49061b8","abstract_canon_sha256":"6b87f3feaaed6433fc557131000f134299de5ac74ceedd898500d7691cb1ab6b"},"schema_version":"1.0"},"canonical_sha256":"8fa0bbcd19a725cd54c58c10a9273a8fc608651d266f7ab8488f814e5af08375","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:26:17.393118Z","signature_b64":"QwzknfuOneGtcY2CW1TEiSO5tRsitpfgSn/DbPFKza2YDIYP/6qCz1fis1UpDTw0Z+zQZYO4EmP9hP6FzE4yAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8fa0bbcd19a725cd54c58c10a9273a8fc608651d266f7ab8488f814e5af08375","last_reissued_at":"2026-05-18T01:26:17.392502Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:26:17.392502Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.06834","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":"2026-05-18T01:26:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IA6z+AVrIsgleiwa/K/3IuRb8+egitrp1Tbtjcd7biMKlauIy6vZ5o8znCrzTCFkntNRDYjaDF5bQmfOZ9PFDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:09:06.526837Z"},"content_sha256":"83630c2410a875334dbeafe950129199aa875c0b5115fe7fe49af923c429b0dc","schema_version":"1.0","event_id":"sha256:83630c2410a875334dbeafe950129199aa875c0b5115fe7fe49af923c429b0dc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:R6QLXTIZU4S42VGFRQIKSJZ2R7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fidelity-Naturalness Evaluation of Single Image Super Resolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Alan Yuille, Alex Wong, Lingxi Xie, Weixin Li, Xuan Dong, Yu Zhu","submitted_at":"2015-11-21T04:40:59Z","abstract_excerpt":"We study the problem of evaluating super resolution methods. Traditional evaluation methods usually judge the quality of super resolved images based on a single measure of their difference with the original high resolution images. In this paper, we proposed to use both fidelity (the difference with original images) and naturalness (human visual perception of super resolved images) for evaluation. For fidelity evaluation, a new metric is proposed to solve the bias problem of traditional evaluation. For naturalness evaluation, we let humans label preference of super resolution results using pair"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.06834","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":"2026-05-18T01:26:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YrsFHpgGQKQd/nB+Pbq+JwZV6Mch7v7hNRb11cFH0U2aBG3BmYjV842d8aabvn5v7i9m+mCoxUPmUVvw7NUgBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:09:06.527167Z"},"content_sha256":"d0030b622fe6e06a49f433aacae466b6905e653d7fd8fa43220a25901d33da1e","schema_version":"1.0","event_id":"sha256:d0030b622fe6e06a49f433aacae466b6905e653d7fd8fa43220a25901d33da1e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R6QLXTIZU4S42VGFRQIKSJZ2R7/bundle.json","state_url":"https://pith.science/pith/R6QLXTIZU4S42VGFRQIKSJZ2R7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R6QLXTIZU4S42VGFRQIKSJZ2R7/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":"2026-06-01T12:09:06Z","links":{"resolver":"https://pith.science/pith/R6QLXTIZU4S42VGFRQIKSJZ2R7","bundle":"https://pith.science/pith/R6QLXTIZU4S42VGFRQIKSJZ2R7/bundle.json","state":"https://pith.science/pith/R6QLXTIZU4S42VGFRQIKSJZ2R7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R6QLXTIZU4S42VGFRQIKSJZ2R7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:R6QLXTIZU4S42VGFRQIKSJZ2R7","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":"6b87f3feaaed6433fc557131000f134299de5ac74ceedd898500d7691cb1ab6b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-11-21T04:40:59Z","title_canon_sha256":"62d90ad9128413e5ab8a0c4a65b82949100a17d49e7f3445738475d2b49061b8"},"schema_version":"1.0","source":{"id":"1511.06834","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.06834","created_at":"2026-05-18T01:26:17Z"},{"alias_kind":"arxiv_version","alias_value":"1511.06834v1","created_at":"2026-05-18T01:26:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.06834","created_at":"2026-05-18T01:26:17Z"},{"alias_kind":"pith_short_12","alias_value":"R6QLXTIZU4S4","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"R6QLXTIZU4S42VGF","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"R6QLXTIZ","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:d0030b622fe6e06a49f433aacae466b6905e653d7fd8fa43220a25901d33da1e","target":"graph","created_at":"2026-05-18T01:26:17Z","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 study the problem of evaluating super resolution methods. Traditional evaluation methods usually judge the quality of super resolved images based on a single measure of their difference with the original high resolution images. In this paper, we proposed to use both fidelity (the difference with original images) and naturalness (human visual perception of super resolved images) for evaluation. For fidelity evaluation, a new metric is proposed to solve the bias problem of traditional evaluation. For naturalness evaluation, we let humans label preference of super resolution results using pair","authors_text":"Alan Yuille, Alex Wong, Lingxi Xie, Weixin Li, Xuan Dong, Yu Zhu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-11-21T04:40:59Z","title":"Fidelity-Naturalness Evaluation of Single Image Super Resolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.06834","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":"sha256:83630c2410a875334dbeafe950129199aa875c0b5115fe7fe49af923c429b0dc","target":"record","created_at":"2026-05-18T01:26:17Z","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":"6b87f3feaaed6433fc557131000f134299de5ac74ceedd898500d7691cb1ab6b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-11-21T04:40:59Z","title_canon_sha256":"62d90ad9128413e5ab8a0c4a65b82949100a17d49e7f3445738475d2b49061b8"},"schema_version":"1.0","source":{"id":"1511.06834","kind":"arxiv","version":1}},"canonical_sha256":"8fa0bbcd19a725cd54c58c10a9273a8fc608651d266f7ab8488f814e5af08375","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8fa0bbcd19a725cd54c58c10a9273a8fc608651d266f7ab8488f814e5af08375","first_computed_at":"2026-05-18T01:26:17.392502Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:26:17.392502Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QwzknfuOneGtcY2CW1TEiSO5tRsitpfgSn/DbPFKza2YDIYP/6qCz1fis1UpDTw0Z+zQZYO4EmP9hP6FzE4yAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:26:17.393118Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.06834","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:83630c2410a875334dbeafe950129199aa875c0b5115fe7fe49af923c429b0dc","sha256:d0030b622fe6e06a49f433aacae466b6905e653d7fd8fa43220a25901d33da1e"],"state_sha256":"669b8323d99048a1f5764a0a0fddd3c476272a8df357ceedf7c08c4db70770ca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"97gKiUspOutRF/tYYGVNmgT9/ome2LpSHb/GRvS/USKnxgfQCmE7KNx0tgThEzD0S6GC5plVfHlnHLTkNO6aAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T12:09:06.528982Z","bundle_sha256":"33e44782863e810620a35f7589f7951a693c49198aee172ed9b4e66636861ae6"}}