{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:S2VOM2CAZFMVXDD5B3DS4I45TQ","short_pith_number":"pith:S2VOM2CA","canonical_record":{"source":{"id":"1703.00962","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-03-01T07:56:27Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"8b4cce4cd6155fde73e72f98d6e07fcaea4979256166b2f7336dd5972a51e19f","abstract_canon_sha256":"7a5ebb74f0f52ef839be4343a6e29191a956a0d0955086ab8e1f7ba26be5eb18"},"schema_version":"1.0"},"canonical_sha256":"96aae66840c9595b8c7d0ec72e239d9c049b8a9e08250bbc934ca2c88dcd4c29","source":{"kind":"arxiv","id":"1703.00962","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.00962","created_at":"2026-05-18T00:42:58Z"},{"alias_kind":"arxiv_version","alias_value":"1703.00962v1","created_at":"2026-05-18T00:42:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.00962","created_at":"2026-05-18T00:42:58Z"},{"alias_kind":"pith_short_12","alias_value":"S2VOM2CAZFMV","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"S2VOM2CAZFMVXDD5","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"S2VOM2CA","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:S2VOM2CAZFMVXDD5B3DS4I45TQ","target":"record","payload":{"canonical_record":{"source":{"id":"1703.00962","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-03-01T07:56:27Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"8b4cce4cd6155fde73e72f98d6e07fcaea4979256166b2f7336dd5972a51e19f","abstract_canon_sha256":"7a5ebb74f0f52ef839be4343a6e29191a956a0d0955086ab8e1f7ba26be5eb18"},"schema_version":"1.0"},"canonical_sha256":"96aae66840c9595b8c7d0ec72e239d9c049b8a9e08250bbc934ca2c88dcd4c29","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:42:58.202131Z","signature_b64":"xV7J73RbyftSJ4foONsbDTW9lBqBJeT7pqicLBDVFqACaHwU3Mub0OkfQakIi/Divyee1SMoEUS+aTRC4UapDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"96aae66840c9595b8c7d0ec72e239d9c049b8a9e08250bbc934ca2c88dcd4c29","last_reissued_at":"2026-05-18T00:42:58.201363Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:42:58.201363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.00962","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":"2026-05-18T00:42:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UglijjHUnldGiqWSlK4Z+CyZVOQxS7J/KXQs09xgp+MHpzws/6TDjoJpC0ayOTeC/DyJJX1oWqBhfCskE1cWAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T20:06:05.889596Z"},"content_sha256":"ef674316d45a8fec8cd503e6bd9e70237b3aa6108efa24ae6c2d67ffb40f9cf7","schema_version":"1.0","event_id":"sha256:ef674316d45a8fec8cd503e6bd9e70237b3aa6108efa24ae6c2d67ffb40f9cf7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:S2VOM2CAZFMVXDD5B3DS4I45TQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Compensation for the setup instability in ptychographic imaging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.ins-det","authors_text":"Cheng Liu, Jianqiang Zhu, Yudong Yao","submitted_at":"2017-03-01T07:56:27Z","abstract_excerpt":"The high-frequency vibration of the imaging system degrades the quality of the reconstruction of ptychography by acting as a low-pass filter on ideal diffraction patterns. In this study, we demonstrate that by subtracting the deliberately blurred diffraction patterns from the recorded patterns and adding the properly amplified subtraction to the original data, the high-frequency components lost by the vibration of the setup can be recovered, and thus the image quality can be distinctly improved. Because no prior knowledge regarding the vibrating properties of the imaging system is needed, the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.00962","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":"2026-05-18T00:42:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CfS2Nv9lxr/kJjTc0aA5UD0BMWxRKlEGCUgJ+9gAYnjOnFL97V3qdHJpnTmb3Zgt2fmJbWQ2/ZyANSacYumjCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T20:06:05.890182Z"},"content_sha256":"fb793006518f64cfa092e3ec2aee8e060bc2c46f9f6999679a5095c92b1eed52","schema_version":"1.0","event_id":"sha256:fb793006518f64cfa092e3ec2aee8e060bc2c46f9f6999679a5095c92b1eed52"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S2VOM2CAZFMVXDD5B3DS4I45TQ/bundle.json","state_url":"https://pith.science/pith/S2VOM2CAZFMVXDD5B3DS4I45TQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S2VOM2CAZFMVXDD5B3DS4I45TQ/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":"2026-06-11T20:06:05Z","links":{"resolver":"https://pith.science/pith/S2VOM2CAZFMVXDD5B3DS4I45TQ","bundle":"https://pith.science/pith/S2VOM2CAZFMVXDD5B3DS4I45TQ/bundle.json","state":"https://pith.science/pith/S2VOM2CAZFMVXDD5B3DS4I45TQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S2VOM2CAZFMVXDD5B3DS4I45TQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:S2VOM2CAZFMVXDD5B3DS4I45TQ","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":"7a5ebb74f0f52ef839be4343a6e29191a956a0d0955086ab8e1f7ba26be5eb18","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-03-01T07:56:27Z","title_canon_sha256":"8b4cce4cd6155fde73e72f98d6e07fcaea4979256166b2f7336dd5972a51e19f"},"schema_version":"1.0","source":{"id":"1703.00962","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.00962","created_at":"2026-05-18T00:42:58Z"},{"alias_kind":"arxiv_version","alias_value":"1703.00962v1","created_at":"2026-05-18T00:42:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.00962","created_at":"2026-05-18T00:42:58Z"},{"alias_kind":"pith_short_12","alias_value":"S2VOM2CAZFMV","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"S2VOM2CAZFMVXDD5","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"S2VOM2CA","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:fb793006518f64cfa092e3ec2aee8e060bc2c46f9f6999679a5095c92b1eed52","target":"graph","created_at":"2026-05-18T00:42:58Z","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":"The high-frequency vibration of the imaging system degrades the quality of the reconstruction of ptychography by acting as a low-pass filter on ideal diffraction patterns. In this study, we demonstrate that by subtracting the deliberately blurred diffraction patterns from the recorded patterns and adding the properly amplified subtraction to the original data, the high-frequency components lost by the vibration of the setup can be recovered, and thus the image quality can be distinctly improved. Because no prior knowledge regarding the vibrating properties of the imaging system is needed, the ","authors_text":"Cheng Liu, Jianqiang Zhu, Yudong Yao","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-03-01T07:56:27Z","title":"Compensation for the setup instability in ptychographic imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.00962","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:ef674316d45a8fec8cd503e6bd9e70237b3aa6108efa24ae6c2d67ffb40f9cf7","target":"record","created_at":"2026-05-18T00:42:58Z","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":"7a5ebb74f0f52ef839be4343a6e29191a956a0d0955086ab8e1f7ba26be5eb18","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-03-01T07:56:27Z","title_canon_sha256":"8b4cce4cd6155fde73e72f98d6e07fcaea4979256166b2f7336dd5972a51e19f"},"schema_version":"1.0","source":{"id":"1703.00962","kind":"arxiv","version":1}},"canonical_sha256":"96aae66840c9595b8c7d0ec72e239d9c049b8a9e08250bbc934ca2c88dcd4c29","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"96aae66840c9595b8c7d0ec72e239d9c049b8a9e08250bbc934ca2c88dcd4c29","first_computed_at":"2026-05-18T00:42:58.201363Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:42:58.201363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xV7J73RbyftSJ4foONsbDTW9lBqBJeT7pqicLBDVFqACaHwU3Mub0OkfQakIi/Divyee1SMoEUS+aTRC4UapDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:42:58.202131Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.00962","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ef674316d45a8fec8cd503e6bd9e70237b3aa6108efa24ae6c2d67ffb40f9cf7","sha256:fb793006518f64cfa092e3ec2aee8e060bc2c46f9f6999679a5095c92b1eed52"],"state_sha256":"9a4d49aa2de64e37a9f00b892d72541a6a1c46282bf9f0b2cfa47fc73d48e26a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+KIiZdOZc8PQaE3yA9bKM1rn5Ne6v+WcxT2Kfqydk9ddj5AEeDY6nmcC/cr4q17NiXH62p3Mn03aaEY/w5V2CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T20:06:05.893726Z","bundle_sha256":"c7a66cd3dbef1356f8b7c8744ee2b5f0c659375f5cfc934ce2ba6bcce0e45b7a"}}