{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:BY4B2BTQES3QMVYZKLYELIPTWZ","short_pith_number":"pith:BY4B2BTQ","canonical_record":{"source":{"id":"2207.09805","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2022-07-20T10:38:29Z","cross_cats_sorted":[],"title_canon_sha256":"742c785f163e8df6146064d8df73815ca9f9085975832b983a7889edcd406b34","abstract_canon_sha256":"48b13f24d6425cea79d09cab00b146416875644eb487daa41e8d990ed5865c0e"},"schema_version":"1.0"},"canonical_sha256":"0e381d067024b706571952f045a1f3b640fdd8b2017cfac06250baae0a887424","source":{"kind":"arxiv","id":"2207.09805","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.09805","created_at":"2026-07-05T04:42:02Z"},{"alias_kind":"arxiv_version","alias_value":"2207.09805v1","created_at":"2026-07-05T04:42:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.09805","created_at":"2026-07-05T04:42:02Z"},{"alias_kind":"pith_short_12","alias_value":"BY4B2BTQES3Q","created_at":"2026-07-05T04:42:02Z"},{"alias_kind":"pith_short_16","alias_value":"BY4B2BTQES3QMVYZ","created_at":"2026-07-05T04:42:02Z"},{"alias_kind":"pith_short_8","alias_value":"BY4B2BTQ","created_at":"2026-07-05T04:42:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:BY4B2BTQES3QMVYZKLYELIPTWZ","target":"record","payload":{"canonical_record":{"source":{"id":"2207.09805","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2022-07-20T10:38:29Z","cross_cats_sorted":[],"title_canon_sha256":"742c785f163e8df6146064d8df73815ca9f9085975832b983a7889edcd406b34","abstract_canon_sha256":"48b13f24d6425cea79d09cab00b146416875644eb487daa41e8d990ed5865c0e"},"schema_version":"1.0"},"canonical_sha256":"0e381d067024b706571952f045a1f3b640fdd8b2017cfac06250baae0a887424","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:42:02.097370Z","signature_b64":"Qv9gfD4pYtX+qL0hnUu1uyLl8cG5ZIRBEIJMBy7BP8AbTjfUmbJ+2jq1XtQs3eTBSaFJbpAgh+FySg0DZCN/Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0e381d067024b706571952f045a1f3b640fdd8b2017cfac06250baae0a887424","last_reissued_at":"2026-07-05T04:42:02.096923Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:42:02.096923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.09805","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":"2026-07-05T04:42:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6gXZ5xMInVTlbfHWOM2bepeF40zk8Ys9VE3yWvvjr+c8oWGUJjJFbMvHgw9w9dvtlqxH8EwxXDGg69moO5SRAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T00:54:27.608743Z"},"content_sha256":"0b6a9482a28cad558b363ae5ea85f509e3017ed29046f70e7255775c379fbbc4","schema_version":"1.0","event_id":"sha256:0b6a9482a28cad558b363ae5ea85f509e3017ed29046f70e7255775c379fbbc4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:BY4B2BTQES3QMVYZKLYELIPTWZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multimodal Transformer for Automatic 3D Annotation and Object Detection","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Binxiao Huang, Chang Liu, Edmund Lam, Ngai Wong, Siew-Chong Tan, Xiaojuan Qi, Xiaoyan Qian","submitted_at":"2022-07-20T10:38:29Z","abstract_excerpt":"Despite a growing number of datasets being collected for training 3D object detection models, significant human effort is still required to annotate 3D boxes on LiDAR scans. To automate the annotation and facilitate the production of various customized datasets, we propose an end-to-end multimodal transformer (MTrans) autolabeler, which leverages both LiDAR scans and images to generate precise 3D box annotations from weak 2D bounding boxes. To alleviate the pervasive sparsity problem that hinders existing autolabelers, MTrans densifies the sparse point clouds by generating new 3D points based "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.09805","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2207.09805/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":"2026-07-05T04:42:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jXEqE89lmqS1WocwlafO1We62ILp1hkMqI0a+FO0zOt4XBaVQ8hcAXRwN6r6f8+C08aGNXa1tSNiiyvkrH0zDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T00:54:27.609285Z"},"content_sha256":"01830d60c5c22ab177947fcf2c0af3a63aa4dbf6b978145f39dc375e708a9cdb","schema_version":"1.0","event_id":"sha256:01830d60c5c22ab177947fcf2c0af3a63aa4dbf6b978145f39dc375e708a9cdb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BY4B2BTQES3QMVYZKLYELIPTWZ/bundle.json","state_url":"https://pith.science/pith/BY4B2BTQES3QMVYZKLYELIPTWZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BY4B2BTQES3QMVYZKLYELIPTWZ/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":"2026-08-04T00:54:27Z","links":{"resolver":"https://pith.science/pith/BY4B2BTQES3QMVYZKLYELIPTWZ","bundle":"https://pith.science/pith/BY4B2BTQES3QMVYZKLYELIPTWZ/bundle.json","state":"https://pith.science/pith/BY4B2BTQES3QMVYZKLYELIPTWZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BY4B2BTQES3QMVYZKLYELIPTWZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:BY4B2BTQES3QMVYZKLYELIPTWZ","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":"48b13f24d6425cea79d09cab00b146416875644eb487daa41e8d990ed5865c0e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2022-07-20T10:38:29Z","title_canon_sha256":"742c785f163e8df6146064d8df73815ca9f9085975832b983a7889edcd406b34"},"schema_version":"1.0","source":{"id":"2207.09805","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.09805","created_at":"2026-07-05T04:42:02Z"},{"alias_kind":"arxiv_version","alias_value":"2207.09805v1","created_at":"2026-07-05T04:42:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.09805","created_at":"2026-07-05T04:42:02Z"},{"alias_kind":"pith_short_12","alias_value":"BY4B2BTQES3Q","created_at":"2026-07-05T04:42:02Z"},{"alias_kind":"pith_short_16","alias_value":"BY4B2BTQES3QMVYZ","created_at":"2026-07-05T04:42:02Z"},{"alias_kind":"pith_short_8","alias_value":"BY4B2BTQ","created_at":"2026-07-05T04:42:02Z"}],"graph_snapshots":[{"event_id":"sha256:01830d60c5c22ab177947fcf2c0af3a63aa4dbf6b978145f39dc375e708a9cdb","target":"graph","created_at":"2026-07-05T04:42:02Z","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/2207.09805/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Despite a growing number of datasets being collected for training 3D object detection models, significant human effort is still required to annotate 3D boxes on LiDAR scans. To automate the annotation and facilitate the production of various customized datasets, we propose an end-to-end multimodal transformer (MTrans) autolabeler, which leverages both LiDAR scans and images to generate precise 3D box annotations from weak 2D bounding boxes. To alleviate the pervasive sparsity problem that hinders existing autolabelers, MTrans densifies the sparse point clouds by generating new 3D points based ","authors_text":"Binxiao Huang, Chang Liu, Edmund Lam, Ngai Wong, Siew-Chong Tan, Xiaojuan Qi, Xiaoyan Qian","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2022-07-20T10:38:29Z","title":"Multimodal Transformer for Automatic 3D Annotation and Object Detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.09805","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":"sha256:0b6a9482a28cad558b363ae5ea85f509e3017ed29046f70e7255775c379fbbc4","target":"record","created_at":"2026-07-05T04:42:02Z","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":"48b13f24d6425cea79d09cab00b146416875644eb487daa41e8d990ed5865c0e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2022-07-20T10:38:29Z","title_canon_sha256":"742c785f163e8df6146064d8df73815ca9f9085975832b983a7889edcd406b34"},"schema_version":"1.0","source":{"id":"2207.09805","kind":"arxiv","version":1}},"canonical_sha256":"0e381d067024b706571952f045a1f3b640fdd8b2017cfac06250baae0a887424","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0e381d067024b706571952f045a1f3b640fdd8b2017cfac06250baae0a887424","first_computed_at":"2026-07-05T04:42:02.096923Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:42:02.096923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Qv9gfD4pYtX+qL0hnUu1uyLl8cG5ZIRBEIJMBy7BP8AbTjfUmbJ+2jq1XtQs3eTBSaFJbpAgh+FySg0DZCN/Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:42:02.097370Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.09805","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b6a9482a28cad558b363ae5ea85f509e3017ed29046f70e7255775c379fbbc4","sha256:01830d60c5c22ab177947fcf2c0af3a63aa4dbf6b978145f39dc375e708a9cdb"],"state_sha256":"efc5010b3a7e46500f8bf6db7313a7c193fff89a2adc8bb592f15058d03a5b7d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pRJX6dD4G1VHOm1gUv2xsIxA2LeeEOY1TJds3cFm8JdGEBU1BfRpRqMt3JM2ZAKRZQu+Up1szvl50RA/Rq69DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T00:54:27.612951Z","bundle_sha256":"a50201b1f053e2fb60f2d905978db536744c2b8c64d9b57da2b9af88e113bf52"}}