{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:6V4PWMCH3OAOV5BW5PWQQEUPCJ","short_pith_number":"pith:6V4PWMCH","canonical_record":{"source":{"id":"1510.04861","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CV","submitted_at":"2015-10-16T12:31:29Z","cross_cats_sorted":["cs.MM"],"title_canon_sha256":"c00ae3c2ec51ed9c3e21ca7286710ed5e49b276405add1a321937fae17e2bd43","abstract_canon_sha256":"33a534faff2f38e0967e0a9903e72cf1c3f44d693a0ec89934d050188250ea5d"},"schema_version":"1.0"},"canonical_sha256":"f578fb3047db80eaf436ebed08128f1241289a3b91cfdf77239d2cfb534c19f2","source":{"kind":"arxiv","id":"1510.04861","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.04861","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"arxiv_version","alias_value":"1510.04861v1","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.04861","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"pith_short_12","alias_value":"6V4PWMCH3OAO","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6V4PWMCH3OAOV5BW","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6V4PWMCH","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:6V4PWMCH3OAOV5BW5PWQQEUPCJ","target":"record","payload":{"canonical_record":{"source":{"id":"1510.04861","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CV","submitted_at":"2015-10-16T12:31:29Z","cross_cats_sorted":["cs.MM"],"title_canon_sha256":"c00ae3c2ec51ed9c3e21ca7286710ed5e49b276405add1a321937fae17e2bd43","abstract_canon_sha256":"33a534faff2f38e0967e0a9903e72cf1c3f44d693a0ec89934d050188250ea5d"},"schema_version":"1.0"},"canonical_sha256":"f578fb3047db80eaf436ebed08128f1241289a3b91cfdf77239d2cfb534c19f2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:30:00.435477Z","signature_b64":"HNso6DeBL0UYlrrSJjUR7mC6Ut2gjRJCR+zzFcXNWAJIB+TXXRrWR/aEVAi77hS5wP0g7YiIsy/7kaqf4SHrAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f578fb3047db80eaf436ebed08128f1241289a3b91cfdf77239d2cfb534c19f2","last_reissued_at":"2026-05-18T01:30:00.434952Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:30:00.434952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.04861","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":"2026-05-18T01:30:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K5H2js4M8am0xovuEnO0I85X2BaoIOHCAjzU0HKrw4/N4nSSop1Ztz5I+Ci8OXfHtyOt3eOSMcISYadGKjuMDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T12:16:52.540280Z"},"content_sha256":"5c6bf44091cf815e57a1c5687747106390738507a981444b29a4ef67ab290311","schema_version":"1.0","event_id":"sha256:5c6bf44091cf815e57a1c5687747106390738507a981444b29a4ef67ab290311"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:6V4PWMCH3OAOV5BW5PWQQEUPCJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards Reversible De-Identification in Video Sequences Using 3D Avatars and Steganography","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["cs.MM"],"primary_cat":"cs.CV","authors_text":"Karla Brki\\'c, Martin Bla\\v{z}evi\\'c, Tomislav Hrka\\'c","submitted_at":"2015-10-16T12:31:29Z","abstract_excerpt":"We propose a de-identification pipeline that protects the privacy of humans in video sequences by replacing them with rendered 3D human models, hence concealing their identity while retaining the naturalness of the scene. The original images of humans are steganographically encoded in the carrier image, i.e. the image containing the original scene and the rendered 3D human models. We qualitatively explore the feasibility of our approach, utilizing the Kinect sensor and its libraries to detect and localize human joints. A 3D avatar is rendered into the scene using the obtained joint positions, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.04861","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":"2026-05-18T01:30:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7JmtKB6AkGERCskZkZ4gi3cGw5CEBZk98+PPuZM1ux82kEuJ5Nzx4RbdPA68/0UU0zn6zZGbl/pXgon+zEesCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T12:16:52.540639Z"},"content_sha256":"9eefb9a57e7c4e8d5bf05a472ba4a71feab85adc8ad7a48600bf76ec838e8635","schema_version":"1.0","event_id":"sha256:9eefb9a57e7c4e8d5bf05a472ba4a71feab85adc8ad7a48600bf76ec838e8635"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6V4PWMCH3OAOV5BW5PWQQEUPCJ/bundle.json","state_url":"https://pith.science/pith/6V4PWMCH3OAOV5BW5PWQQEUPCJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6V4PWMCH3OAOV5BW5PWQQEUPCJ/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":"2026-07-02T12:16:52Z","links":{"resolver":"https://pith.science/pith/6V4PWMCH3OAOV5BW5PWQQEUPCJ","bundle":"https://pith.science/pith/6V4PWMCH3OAOV5BW5PWQQEUPCJ/bundle.json","state":"https://pith.science/pith/6V4PWMCH3OAOV5BW5PWQQEUPCJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6V4PWMCH3OAOV5BW5PWQQEUPCJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:6V4PWMCH3OAOV5BW5PWQQEUPCJ","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":"33a534faff2f38e0967e0a9903e72cf1c3f44d693a0ec89934d050188250ea5d","cross_cats_sorted":["cs.MM"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CV","submitted_at":"2015-10-16T12:31:29Z","title_canon_sha256":"c00ae3c2ec51ed9c3e21ca7286710ed5e49b276405add1a321937fae17e2bd43"},"schema_version":"1.0","source":{"id":"1510.04861","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.04861","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"arxiv_version","alias_value":"1510.04861v1","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.04861","created_at":"2026-05-18T01:30:00Z"},{"alias_kind":"pith_short_12","alias_value":"6V4PWMCH3OAO","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6V4PWMCH3OAOV5BW","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6V4PWMCH","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:9eefb9a57e7c4e8d5bf05a472ba4a71feab85adc8ad7a48600bf76ec838e8635","target":"graph","created_at":"2026-05-18T01:30:00Z","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 propose a de-identification pipeline that protects the privacy of humans in video sequences by replacing them with rendered 3D human models, hence concealing their identity while retaining the naturalness of the scene. The original images of humans are steganographically encoded in the carrier image, i.e. the image containing the original scene and the rendered 3D human models. We qualitatively explore the feasibility of our approach, utilizing the Kinect sensor and its libraries to detect and localize human joints. A 3D avatar is rendered into the scene using the obtained joint positions, ","authors_text":"Karla Brki\\'c, Martin Bla\\v{z}evi\\'c, Tomislav Hrka\\'c","cross_cats":["cs.MM"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CV","submitted_at":"2015-10-16T12:31:29Z","title":"Towards Reversible De-Identification in Video Sequences Using 3D Avatars and Steganography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.04861","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":"sha256:5c6bf44091cf815e57a1c5687747106390738507a981444b29a4ef67ab290311","target":"record","created_at":"2026-05-18T01:30:00Z","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":"33a534faff2f38e0967e0a9903e72cf1c3f44d693a0ec89934d050188250ea5d","cross_cats_sorted":["cs.MM"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CV","submitted_at":"2015-10-16T12:31:29Z","title_canon_sha256":"c00ae3c2ec51ed9c3e21ca7286710ed5e49b276405add1a321937fae17e2bd43"},"schema_version":"1.0","source":{"id":"1510.04861","kind":"arxiv","version":1}},"canonical_sha256":"f578fb3047db80eaf436ebed08128f1241289a3b91cfdf77239d2cfb534c19f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f578fb3047db80eaf436ebed08128f1241289a3b91cfdf77239d2cfb534c19f2","first_computed_at":"2026-05-18T01:30:00.434952Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:00.434952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HNso6DeBL0UYlrrSJjUR7mC6Ut2gjRJCR+zzFcXNWAJIB+TXXRrWR/aEVAi77hS5wP0g7YiIsy/7kaqf4SHrAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:00.435477Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.04861","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5c6bf44091cf815e57a1c5687747106390738507a981444b29a4ef67ab290311","sha256:9eefb9a57e7c4e8d5bf05a472ba4a71feab85adc8ad7a48600bf76ec838e8635"],"state_sha256":"ef287b08014928fbcb6ad3f531de0cce849d9edf2c785ad857a88a0c4b957b64"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6NNVlaSXPNMKz36sKAgou5NgHcaiP3GGsYI8EiycJLG9TPnFOtogmwuIv4HAjcp64unR2A+F9Tc6I3L/7WKuBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T12:16:52.542599Z","bundle_sha256":"cd207b90e352e1fc72f0a186e6a9725f062edfcfb964215971a5282bb82e6079"}}