{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:TH63JN6ZUUI7G5HNEAF3K2QQP7","short_pith_number":"pith:TH63JN6Z","canonical_record":{"source":{"id":"2102.02502","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-02-04T09:23:21Z","cross_cats_sorted":[],"title_canon_sha256":"b57f772334757046fc7a197a9a22bc0088e094aa0d1774156f8eaa7b8168a24d","abstract_canon_sha256":"c167450ab4590b97ed2fb8f473ba918a4be64807a6c78925f4a7613d7cd6a0e8"},"schema_version":"1.0"},"canonical_sha256":"99fdb4b7d9a511f374ed200bb56a107ffb0564eafe545c77b321e7354bd61b66","source":{"kind":"arxiv","id":"2102.02502","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.02502","created_at":"2026-07-05T02:28:55Z"},{"alias_kind":"arxiv_version","alias_value":"2102.02502v2","created_at":"2026-07-05T02:28:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.02502","created_at":"2026-07-05T02:28:55Z"},{"alias_kind":"pith_short_12","alias_value":"TH63JN6ZUUI7","created_at":"2026-07-05T02:28:55Z"},{"alias_kind":"pith_short_16","alias_value":"TH63JN6ZUUI7G5HN","created_at":"2026-07-05T02:28:55Z"},{"alias_kind":"pith_short_8","alias_value":"TH63JN6Z","created_at":"2026-07-05T02:28:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:TH63JN6ZUUI7G5HNEAF3K2QQP7","target":"record","payload":{"canonical_record":{"source":{"id":"2102.02502","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-02-04T09:23:21Z","cross_cats_sorted":[],"title_canon_sha256":"b57f772334757046fc7a197a9a22bc0088e094aa0d1774156f8eaa7b8168a24d","abstract_canon_sha256":"c167450ab4590b97ed2fb8f473ba918a4be64807a6c78925f4a7613d7cd6a0e8"},"schema_version":"1.0"},"canonical_sha256":"99fdb4b7d9a511f374ed200bb56a107ffb0564eafe545c77b321e7354bd61b66","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:28:55.528120Z","signature_b64":"rpSxPqq51rOPMSjkjK2ygkbq2ttvg4MDBph7Va13mje+gC0HHahxkrRAueWSffVLqYgxUN2v269/WHWLBCBGCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"99fdb4b7d9a511f374ed200bb56a107ffb0564eafe545c77b321e7354bd61b66","last_reissued_at":"2026-07-05T02:28:55.527671Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:28:55.527671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.02502","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:28:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7GKenIDAldxRHnQYVARcEP6M6jj95XxOD/BnCPyK1y+a2juhfv+o2U4nMN1J1XnP+xdHSXAoJlDTDDRxfj9hCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T17:18:01.785374Z"},"content_sha256":"3f274fe5ae6de37e77b6c89742cba4ce82489426c4141124daf1ba5d2a070ad5","schema_version":"1.0","event_id":"sha256:3f274fe5ae6de37e77b6c89742cba4ce82489426c4141124daf1ba5d2a070ad5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:TH63JN6ZUUI7G5HNEAF3K2QQP7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"3D Surface Reconstruction From Multi-Date Satellite Images","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Christoph Bodensteiner, Michael Arens, Sebastian Bullinger","submitted_at":"2021-02-04T09:23:21Z","abstract_excerpt":"The reconstruction of accurate three-dimensional environment models is one of the most fundamental goals in the field of photogrammetry. Since satellite images provide suitable properties for obtaining large-scale environment reconstructions, there exist a variety of Stereo Matching based methods to reconstruct point clouds for satellite image pairs. Recently, the first Structure from Motion (SfM) based approach has been proposed, which allows to reconstruct point clouds from multiple satellite images. In this work, we propose an extension of this SfM based pipeline that allows us to reconstru"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.02502","kind":"arxiv","version":2},"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/2102.02502/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":"2026-07-05T02:28:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5uveUjFjDaZmipfaUYjWJbAIgNn/9PFeLcQ7Po4Dq386DD/dt46a46yRJDmForcjTUfOw8XqjfkrE1W6c8IbAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T17:18:01.785885Z"},"content_sha256":"102fcd61a87f961934b0143fb0ca3f0c9c101cf4c86322c5035185ec8d982b5b","schema_version":"1.0","event_id":"sha256:102fcd61a87f961934b0143fb0ca3f0c9c101cf4c86322c5035185ec8d982b5b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TH63JN6ZUUI7G5HNEAF3K2QQP7/bundle.json","state_url":"https://pith.science/pith/TH63JN6ZUUI7G5HNEAF3K2QQP7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TH63JN6ZUUI7G5HNEAF3K2QQP7/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":"2026-08-05T17:18:01Z","links":{"resolver":"https://pith.science/pith/TH63JN6ZUUI7G5HNEAF3K2QQP7","bundle":"https://pith.science/pith/TH63JN6ZUUI7G5HNEAF3K2QQP7/bundle.json","state":"https://pith.science/pith/TH63JN6ZUUI7G5HNEAF3K2QQP7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TH63JN6ZUUI7G5HNEAF3K2QQP7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:TH63JN6ZUUI7G5HNEAF3K2QQP7","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":"c167450ab4590b97ed2fb8f473ba918a4be64807a6c78925f4a7613d7cd6a0e8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-02-04T09:23:21Z","title_canon_sha256":"b57f772334757046fc7a197a9a22bc0088e094aa0d1774156f8eaa7b8168a24d"},"schema_version":"1.0","source":{"id":"2102.02502","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.02502","created_at":"2026-07-05T02:28:55Z"},{"alias_kind":"arxiv_version","alias_value":"2102.02502v2","created_at":"2026-07-05T02:28:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.02502","created_at":"2026-07-05T02:28:55Z"},{"alias_kind":"pith_short_12","alias_value":"TH63JN6ZUUI7","created_at":"2026-07-05T02:28:55Z"},{"alias_kind":"pith_short_16","alias_value":"TH63JN6ZUUI7G5HN","created_at":"2026-07-05T02:28:55Z"},{"alias_kind":"pith_short_8","alias_value":"TH63JN6Z","created_at":"2026-07-05T02:28:55Z"}],"graph_snapshots":[{"event_id":"sha256:102fcd61a87f961934b0143fb0ca3f0c9c101cf4c86322c5035185ec8d982b5b","target":"graph","created_at":"2026-07-05T02:28:55Z","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/2102.02502/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The reconstruction of accurate three-dimensional environment models is one of the most fundamental goals in the field of photogrammetry. Since satellite images provide suitable properties for obtaining large-scale environment reconstructions, there exist a variety of Stereo Matching based methods to reconstruct point clouds for satellite image pairs. Recently, the first Structure from Motion (SfM) based approach has been proposed, which allows to reconstruct point clouds from multiple satellite images. In this work, we propose an extension of this SfM based pipeline that allows us to reconstru","authors_text":"Christoph Bodensteiner, Michael Arens, Sebastian Bullinger","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-02-04T09:23:21Z","title":"3D Surface Reconstruction From Multi-Date Satellite Images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.02502","kind":"arxiv","version":2},"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":"sha256:3f274fe5ae6de37e77b6c89742cba4ce82489426c4141124daf1ba5d2a070ad5","target":"record","created_at":"2026-07-05T02:28:55Z","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":"c167450ab4590b97ed2fb8f473ba918a4be64807a6c78925f4a7613d7cd6a0e8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-02-04T09:23:21Z","title_canon_sha256":"b57f772334757046fc7a197a9a22bc0088e094aa0d1774156f8eaa7b8168a24d"},"schema_version":"1.0","source":{"id":"2102.02502","kind":"arxiv","version":2}},"canonical_sha256":"99fdb4b7d9a511f374ed200bb56a107ffb0564eafe545c77b321e7354bd61b66","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"99fdb4b7d9a511f374ed200bb56a107ffb0564eafe545c77b321e7354bd61b66","first_computed_at":"2026-07-05T02:28:55.527671Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:28:55.527671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rpSxPqq51rOPMSjkjK2ygkbq2ttvg4MDBph7Va13mje+gC0HHahxkrRAueWSffVLqYgxUN2v269/WHWLBCBGCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:28:55.528120Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.02502","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3f274fe5ae6de37e77b6c89742cba4ce82489426c4141124daf1ba5d2a070ad5","sha256:102fcd61a87f961934b0143fb0ca3f0c9c101cf4c86322c5035185ec8d982b5b"],"state_sha256":"28a4c4a953f52ab73d4a573c063343af0bb256246d80622fba5d0b59187d29b4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4K9js1wkRKBIFIKD7Gi0RH+tqiUAsaII3zZKSUH4sDX6sCN+Ei/MUvDmHElnbRwESHlZsl97Ky8zNHnq0xgOAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T17:18:01.789711Z","bundle_sha256":"7f6830a95e57eaf9553e03dbe9846ee7911811292a408a22567d9bad1b6756b4"}}