{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:UFXM7E6KXAJHZGZZOB2QWSLYVX","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":"324a297033cc62cc97491456eca91e20e2012f2d5351d7ff138169d854d03f5c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-07-11T11:53:55Z","title_canon_sha256":"2fe7bb39c045c354f75853f6aca0e03c9a23e477e2bb68530402d38d1f268fd6"},"schema_version":"1.0","source":{"id":"2207.04801","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.04801","created_at":"2026-07-05T04:39:03Z"},{"alias_kind":"arxiv_version","alias_value":"2207.04801v1","created_at":"2026-07-05T04:39:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.04801","created_at":"2026-07-05T04:39:03Z"},{"alias_kind":"pith_short_12","alias_value":"UFXM7E6KXAJH","created_at":"2026-07-05T04:39:03Z"},{"alias_kind":"pith_short_16","alias_value":"UFXM7E6KXAJHZGZZ","created_at":"2026-07-05T04:39:03Z"},{"alias_kind":"pith_short_8","alias_value":"UFXM7E6K","created_at":"2026-07-05T04:39:03Z"}],"graph_snapshots":[{"event_id":"sha256:b095944bfd3ff012eeccaaa55c9e73f2457612d73894ab5edefcd64f8c86dbf7","target":"graph","created_at":"2026-07-05T04:39:03Z","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/2207.04801/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Inertial measurement units (IMUs) are used in medical applications for many different purposes. However, an IMU's measurement accuracy can degrade over time, entailing re-calibration. In their 2014 paper, Tedaldi et al. presented an IMU calibration method that does not require external precision equipment or complex procedures. This allows end-users or personnel without expert knowledge of inertial measurement to re-calibrate the sensors by placing them in several suitable but not precisely defined orientations. In this work, we present several improvements to Tedaldi's method, both on the alg","authors_text":"Fritz Webering, Holger Blume, Nils Stanislawski, Sarah Kleinjohann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-07-11T11:53:55Z","title":"Improved Calibration Procedure for Wireless Inertial Measurement Units without Precision Equipment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.04801","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:b30cff5ab08ecc3113af64485e6da915c1fb7faaca698fc57ce8e6f3e6f477cd","target":"record","created_at":"2026-07-05T04:39:03Z","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":"324a297033cc62cc97491456eca91e20e2012f2d5351d7ff138169d854d03f5c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-07-11T11:53:55Z","title_canon_sha256":"2fe7bb39c045c354f75853f6aca0e03c9a23e477e2bb68530402d38d1f268fd6"},"schema_version":"1.0","source":{"id":"2207.04801","kind":"arxiv","version":1}},"canonical_sha256":"a16ecf93cab8127c9b3970750b4978adc32b0523f1d137fe95cb5c57f8f9ef46","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a16ecf93cab8127c9b3970750b4978adc32b0523f1d137fe95cb5c57f8f9ef46","first_computed_at":"2026-07-05T04:39:03.508547Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:39:03.508547Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2U8kYVJ3oMLM9FgEx3BlBFPsMsygF24t7H28k2Mz3RRHDaqjuHmTmJ5YAmcIlW0QFA8PLugLeYTqdcWNw7wwAA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:39:03.508936Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.04801","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b30cff5ab08ecc3113af64485e6da915c1fb7faaca698fc57ce8e6f3e6f477cd","sha256:b095944bfd3ff012eeccaaa55c9e73f2457612d73894ab5edefcd64f8c86dbf7"],"state_sha256":"3648648a8f01ed568ccfaa81c8829bce54ce37c9c9e6c548c3600e91e765c169"}