{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:PWVPA2NWUUXRQCAZQCOSZU7O5P","short_pith_number":"pith:PWVPA2NW","canonical_record":{"source":{"id":"1903.03247","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2019-03-08T02:02:51Z","cross_cats_sorted":["eess.SP"],"title_canon_sha256":"b7502d12ad37a919eba085873f6ea13b5ac2e20a6e1234262a5af966dd5100d4","abstract_canon_sha256":"5be4abf4023f720bb1e62d0f9cb835af52eb4ec0895ac288dd7cf1aa6cc800b5"},"schema_version":"1.0"},"canonical_sha256":"7daaf069b6a52f180819809d2cd3eeebc2738629969a1f82d815fbb391a3f11a","source":{"kind":"arxiv","id":"1903.03247","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.03247","created_at":"2026-05-17T23:51:46Z"},{"alias_kind":"arxiv_version","alias_value":"1903.03247v1","created_at":"2026-05-17T23:51:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.03247","created_at":"2026-05-17T23:51:46Z"},{"alias_kind":"pith_short_12","alias_value":"PWVPA2NWUUXR","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"PWVPA2NWUUXRQCAZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"PWVPA2NW","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:PWVPA2NWUUXRQCAZQCOSZU7O5P","target":"record","payload":{"canonical_record":{"source":{"id":"1903.03247","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2019-03-08T02:02:51Z","cross_cats_sorted":["eess.SP"],"title_canon_sha256":"b7502d12ad37a919eba085873f6ea13b5ac2e20a6e1234262a5af966dd5100d4","abstract_canon_sha256":"5be4abf4023f720bb1e62d0f9cb835af52eb4ec0895ac288dd7cf1aa6cc800b5"},"schema_version":"1.0"},"canonical_sha256":"7daaf069b6a52f180819809d2cd3eeebc2738629969a1f82d815fbb391a3f11a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:46.079668Z","signature_b64":"YAZHJZOdIPvb1wOiJ6c1nXXW+/2vfGfVY/BDl3Ysx5brsrU2pYIkDzk5O4FZCg1VtfrZvjwmFV3kTueRiwpTDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7daaf069b6a52f180819809d2cd3eeebc2738629969a1f82d815fbb391a3f11a","last_reissued_at":"2026-05-17T23:51:46.078967Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:46.078967Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.03247","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":"2026-05-17T23:51:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GshVr/be8ApDQE54FIYMoN0AXOebBYcl1IFI6qmkIj+fsljEloOykJUQXoskovQK9JpGIsHHpJf8q1wFgrrNDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T16:36:54.569633Z"},"content_sha256":"3deb824682b45dfc68135d936d53d094631a6a2a704d67abef965268d2aefc01","schema_version":"1.0","event_id":"sha256:3deb824682b45dfc68135d936d53d094631a6a2a704d67abef965268d2aefc01"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:PWVPA2NWUUXRQCAZQCOSZU7O5P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HoloCast: Graph Signal Processing for Graceful Point Cloud Delivery","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.SP"],"primary_cat":"cs.MM","authors_text":"Philip V. Orlik, Takashi Watanabe, Takuya Fujihashi, Toshiaki Koike-Akino","submitted_at":"2019-03-08T02:02:51Z","abstract_excerpt":"In conventional point cloud delivery, a sender uses octree-based digital video compression to stream three-dimensional (3D) points and the corresponding color attributes over band-limited links, e.g., wireless channels, for 3D scene reconstructions. However, the digital-based delivery schemes have an issue called cliff effect, where the 3D reconstruction quality is a step function in terms of wireless channel quality. We propose a novel scheme of point cloud delivery, called HoloCast, to gracefully improve the reconstruction quality with the improvement of wireless channel quality. HoloCast re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.03247","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":"2026-05-17T23:51:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"elQalIkzCPZN/bfSfavJluPOEsQnywtLlP+s5j9rmR1oOHupEBAP1pS570ZPRRz1alcrsXdVlJbDBP25U4wBDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T16:36:54.570347Z"},"content_sha256":"c4d54ad08e38269eb627f2c527dea35f9c4fd7e19e2ca2858d24d4180f087804","schema_version":"1.0","event_id":"sha256:c4d54ad08e38269eb627f2c527dea35f9c4fd7e19e2ca2858d24d4180f087804"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PWVPA2NWUUXRQCAZQCOSZU7O5P/bundle.json","state_url":"https://pith.science/pith/PWVPA2NWUUXRQCAZQCOSZU7O5P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PWVPA2NWUUXRQCAZQCOSZU7O5P/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":"2026-05-22T16:36:54Z","links":{"resolver":"https://pith.science/pith/PWVPA2NWUUXRQCAZQCOSZU7O5P","bundle":"https://pith.science/pith/PWVPA2NWUUXRQCAZQCOSZU7O5P/bundle.json","state":"https://pith.science/pith/PWVPA2NWUUXRQCAZQCOSZU7O5P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PWVPA2NWUUXRQCAZQCOSZU7O5P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:PWVPA2NWUUXRQCAZQCOSZU7O5P","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":"5be4abf4023f720bb1e62d0f9cb835af52eb4ec0895ac288dd7cf1aa6cc800b5","cross_cats_sorted":["eess.SP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2019-03-08T02:02:51Z","title_canon_sha256":"b7502d12ad37a919eba085873f6ea13b5ac2e20a6e1234262a5af966dd5100d4"},"schema_version":"1.0","source":{"id":"1903.03247","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.03247","created_at":"2026-05-17T23:51:46Z"},{"alias_kind":"arxiv_version","alias_value":"1903.03247v1","created_at":"2026-05-17T23:51:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.03247","created_at":"2026-05-17T23:51:46Z"},{"alias_kind":"pith_short_12","alias_value":"PWVPA2NWUUXR","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"PWVPA2NWUUXRQCAZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"PWVPA2NW","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:c4d54ad08e38269eb627f2c527dea35f9c4fd7e19e2ca2858d24d4180f087804","target":"graph","created_at":"2026-05-17T23:51:46Z","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":"In conventional point cloud delivery, a sender uses octree-based digital video compression to stream three-dimensional (3D) points and the corresponding color attributes over band-limited links, e.g., wireless channels, for 3D scene reconstructions. However, the digital-based delivery schemes have an issue called cliff effect, where the 3D reconstruction quality is a step function in terms of wireless channel quality. We propose a novel scheme of point cloud delivery, called HoloCast, to gracefully improve the reconstruction quality with the improvement of wireless channel quality. HoloCast re","authors_text":"Philip V. Orlik, Takashi Watanabe, Takuya Fujihashi, Toshiaki Koike-Akino","cross_cats":["eess.SP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2019-03-08T02:02:51Z","title":"HoloCast: Graph Signal Processing for Graceful Point Cloud Delivery"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.03247","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":"sha256:3deb824682b45dfc68135d936d53d094631a6a2a704d67abef965268d2aefc01","target":"record","created_at":"2026-05-17T23:51:46Z","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":"5be4abf4023f720bb1e62d0f9cb835af52eb4ec0895ac288dd7cf1aa6cc800b5","cross_cats_sorted":["eess.SP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2019-03-08T02:02:51Z","title_canon_sha256":"b7502d12ad37a919eba085873f6ea13b5ac2e20a6e1234262a5af966dd5100d4"},"schema_version":"1.0","source":{"id":"1903.03247","kind":"arxiv","version":1}},"canonical_sha256":"7daaf069b6a52f180819809d2cd3eeebc2738629969a1f82d815fbb391a3f11a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7daaf069b6a52f180819809d2cd3eeebc2738629969a1f82d815fbb391a3f11a","first_computed_at":"2026-05-17T23:51:46.078967Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:46.078967Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YAZHJZOdIPvb1wOiJ6c1nXXW+/2vfGfVY/BDl3Ysx5brsrU2pYIkDzk5O4FZCg1VtfrZvjwmFV3kTueRiwpTDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:46.079668Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.03247","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3deb824682b45dfc68135d936d53d094631a6a2a704d67abef965268d2aefc01","sha256:c4d54ad08e38269eb627f2c527dea35f9c4fd7e19e2ca2858d24d4180f087804"],"state_sha256":"573e2820c735918e60cbad5a15aaacc073fdd968fd4048296da279b408d2b005"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UiPj/Gu+h85Z46n7OIO7OF/3ZNAgGH1b5gD2B54bLQO02fzv0WsXL/HUQOoHT7h3CcmCkD6jwgPoKFaphbp0BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T16:36:54.574865Z","bundle_sha256":"0840bfc617d739d8ee67ee805dcddd288ddd43e86feddf2c35eef1021bc2bbd9"}}