{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:QX3ACE2QTHBKRIJDZ45Q4YVLZ6","short_pith_number":"pith:QX3ACE2Q","canonical_record":{"source":{"id":"2207.14671","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2022-07-29T13:31:28Z","cross_cats_sorted":["eess.IV"],"title_canon_sha256":"9a0a0d8bd8980549cb1f78be7b4d704dbe9935755835c6449ac9a9cfa6719669","abstract_canon_sha256":"1ee672eb312daa4079ab144133b3c5ed2e667e186bcf775cf77c41bf5327f2ee"},"schema_version":"1.0"},"canonical_sha256":"85f601135099c2a8a123cf3b0e62abcf8c3a4e28401d8b772acc69ffbda3f2ed","source":{"kind":"arxiv","id":"2207.14671","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.14671","created_at":"2026-07-05T04:44:36Z"},{"alias_kind":"arxiv_version","alias_value":"2207.14671v1","created_at":"2026-07-05T04:44:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.14671","created_at":"2026-07-05T04:44:36Z"},{"alias_kind":"pith_short_12","alias_value":"QX3ACE2QTHBK","created_at":"2026-07-05T04:44:36Z"},{"alias_kind":"pith_short_16","alias_value":"QX3ACE2QTHBKRIJD","created_at":"2026-07-05T04:44:36Z"},{"alias_kind":"pith_short_8","alias_value":"QX3ACE2Q","created_at":"2026-07-05T04:44:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:QX3ACE2QTHBKRIJDZ45Q4YVLZ6","target":"record","payload":{"canonical_record":{"source":{"id":"2207.14671","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2022-07-29T13:31:28Z","cross_cats_sorted":["eess.IV"],"title_canon_sha256":"9a0a0d8bd8980549cb1f78be7b4d704dbe9935755835c6449ac9a9cfa6719669","abstract_canon_sha256":"1ee672eb312daa4079ab144133b3c5ed2e667e186bcf775cf77c41bf5327f2ee"},"schema_version":"1.0"},"canonical_sha256":"85f601135099c2a8a123cf3b0e62abcf8c3a4e28401d8b772acc69ffbda3f2ed","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:44:36.719962Z","signature_b64":"1G+A+a7COyYl9nV/9b+xjF9ImfedyZ3tDDYJDz8lF0aYG7jOAPDfD71kUEgK1C1Zw25Lhl3LEa1XdqB0ftagCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85f601135099c2a8a123cf3b0e62abcf8c3a4e28401d8b772acc69ffbda3f2ed","last_reissued_at":"2026-07-05T04:44:36.719411Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:44:36.719411Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.14671","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":"2026-07-05T04:44:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dq7mlm6pqsJHwWA7nOe9mkIAFTzy3LWzgfwZnYljoUxRAeA+ctIgof+Z3eu9GyoY7xmFG22ik0dB6UQmVgX7Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T19:16:36.558462Z"},"content_sha256":"fa0b62fa27e6e99385a56702380e54c715abff71a91252fe381a28fdec93e28f","schema_version":"1.0","event_id":"sha256:fa0b62fa27e6e99385a56702380e54c715abff71a91252fe381a28fdec93e28f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:QX3ACE2QTHBKRIJDZ45Q4YVLZ6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High Dynamic Range and Super-Resolution from Raw Image Bursts","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["eess.IV"],"primary_cat":"cs.CV","authors_text":"Bruno Lecouat, Jean Ponce, Julien Mairal, Thomas Eboli","submitted_at":"2022-07-29T13:31:28Z","abstract_excerpt":"Photographs captured by smartphones and mid-range cameras have limited spatial resolution and dynamic range, with noisy response in underexposed regions and color artefacts in saturated areas. This paper introduces the first approach (to the best of our knowledge) to the reconstruction of high-resolution, high-dynamic range color images from raw photographic bursts captured by a handheld camera with exposure bracketing. This method uses a physically-accurate model of image formation to combine an iterative optimization algorithm for solving the corresponding inverse problem with a learned imag"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.14671","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/2207.14671/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":"2026-07-05T04:44:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+d6yiknLhQZEpW6KEjLYEuH4/+R845bq72tpe5LUQBTx/QV2JY9mBiOOcMK7Mb9/QKfbNJZn9iyYwVF8aKt4CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T19:16:36.558964Z"},"content_sha256":"aabfc3f0ce49f7781781832ae502fd305b1c5c8bfa9fa959ac3d43d03b4403c0","schema_version":"1.0","event_id":"sha256:aabfc3f0ce49f7781781832ae502fd305b1c5c8bfa9fa959ac3d43d03b4403c0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QX3ACE2QTHBKRIJDZ45Q4YVLZ6/bundle.json","state_url":"https://pith.science/pith/QX3ACE2QTHBKRIJDZ45Q4YVLZ6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QX3ACE2QTHBKRIJDZ45Q4YVLZ6/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":"2026-08-07T19:16:36Z","links":{"resolver":"https://pith.science/pith/QX3ACE2QTHBKRIJDZ45Q4YVLZ6","bundle":"https://pith.science/pith/QX3ACE2QTHBKRIJDZ45Q4YVLZ6/bundle.json","state":"https://pith.science/pith/QX3ACE2QTHBKRIJDZ45Q4YVLZ6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QX3ACE2QTHBKRIJDZ45Q4YVLZ6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:QX3ACE2QTHBKRIJDZ45Q4YVLZ6","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":"1ee672eb312daa4079ab144133b3c5ed2e667e186bcf775cf77c41bf5327f2ee","cross_cats_sorted":["eess.IV"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2022-07-29T13:31:28Z","title_canon_sha256":"9a0a0d8bd8980549cb1f78be7b4d704dbe9935755835c6449ac9a9cfa6719669"},"schema_version":"1.0","source":{"id":"2207.14671","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.14671","created_at":"2026-07-05T04:44:36Z"},{"alias_kind":"arxiv_version","alias_value":"2207.14671v1","created_at":"2026-07-05T04:44:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.14671","created_at":"2026-07-05T04:44:36Z"},{"alias_kind":"pith_short_12","alias_value":"QX3ACE2QTHBK","created_at":"2026-07-05T04:44:36Z"},{"alias_kind":"pith_short_16","alias_value":"QX3ACE2QTHBKRIJD","created_at":"2026-07-05T04:44:36Z"},{"alias_kind":"pith_short_8","alias_value":"QX3ACE2Q","created_at":"2026-07-05T04:44:36Z"}],"graph_snapshots":[{"event_id":"sha256:aabfc3f0ce49f7781781832ae502fd305b1c5c8bfa9fa959ac3d43d03b4403c0","target":"graph","created_at":"2026-07-05T04:44:36Z","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/2207.14671/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Photographs captured by smartphones and mid-range cameras have limited spatial resolution and dynamic range, with noisy response in underexposed regions and color artefacts in saturated areas. This paper introduces the first approach (to the best of our knowledge) to the reconstruction of high-resolution, high-dynamic range color images from raw photographic bursts captured by a handheld camera with exposure bracketing. This method uses a physically-accurate model of image formation to combine an iterative optimization algorithm for solving the corresponding inverse problem with a learned imag","authors_text":"Bruno Lecouat, Jean Ponce, Julien Mairal, Thomas Eboli","cross_cats":["eess.IV"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2022-07-29T13:31:28Z","title":"High Dynamic Range and Super-Resolution from Raw Image Bursts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.14671","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:fa0b62fa27e6e99385a56702380e54c715abff71a91252fe381a28fdec93e28f","target":"record","created_at":"2026-07-05T04:44:36Z","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":"1ee672eb312daa4079ab144133b3c5ed2e667e186bcf775cf77c41bf5327f2ee","cross_cats_sorted":["eess.IV"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.CV","submitted_at":"2022-07-29T13:31:28Z","title_canon_sha256":"9a0a0d8bd8980549cb1f78be7b4d704dbe9935755835c6449ac9a9cfa6719669"},"schema_version":"1.0","source":{"id":"2207.14671","kind":"arxiv","version":1}},"canonical_sha256":"85f601135099c2a8a123cf3b0e62abcf8c3a4e28401d8b772acc69ffbda3f2ed","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85f601135099c2a8a123cf3b0e62abcf8c3a4e28401d8b772acc69ffbda3f2ed","first_computed_at":"2026-07-05T04:44:36.719411Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:44:36.719411Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1G+A+a7COyYl9nV/9b+xjF9ImfedyZ3tDDYJDz8lF0aYG7jOAPDfD71kUEgK1C1Zw25Lhl3LEa1XdqB0ftagCA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:44:36.719962Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.14671","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa0b62fa27e6e99385a56702380e54c715abff71a91252fe381a28fdec93e28f","sha256:aabfc3f0ce49f7781781832ae502fd305b1c5c8bfa9fa959ac3d43d03b4403c0"],"state_sha256":"f3f9634cad8561f7b4e83b5c5256252e40ff20f83925fc7c371ed94d4583e33b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wt3ARlrvvSKsDJXy2aU5mM8c3Xap1honoO1xywMaqTy2NGh2fAhrerB3tWH1+S82B5DVXNGle4WVNmuLpHabAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T19:16:36.563540Z","bundle_sha256":"f0cd11bc3db1420ec8c8e43633fcd0673947b3d627b019e58cf04844ce72d14f"}}