{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:MXM2LLRIBCYMGXDJBI7FMHX7L7","short_pith_number":"pith:MXM2LLRI","canonical_record":{"source":{"id":"1904.10351","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-04-23T14:23:49Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"3065b8d5fda02d2369d5c194f219c3b40edd2c0b96e9fc798ed7708cb4b23ccb","abstract_canon_sha256":"b6821bd7048ceadaaf8d09da24e60e3f6274dd8d21201adebdb608a8d74ed0a4"},"schema_version":"1.0"},"canonical_sha256":"65d9a5ae2808b0c35c690a3e561eff5ff9f366a359fc5957426d88a838ee9ecb","source":{"kind":"arxiv","id":"1904.10351","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.10351","created_at":"2026-05-17T23:47:54Z"},{"alias_kind":"arxiv_version","alias_value":"1904.10351v1","created_at":"2026-05-17T23:47:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.10351","created_at":"2026-05-17T23:47:54Z"},{"alias_kind":"pith_short_12","alias_value":"MXM2LLRIBCYM","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"MXM2LLRIBCYMGXDJ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"MXM2LLRI","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:MXM2LLRIBCYMGXDJBI7FMHX7L7","target":"record","payload":{"canonical_record":{"source":{"id":"1904.10351","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-04-23T14:23:49Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"3065b8d5fda02d2369d5c194f219c3b40edd2c0b96e9fc798ed7708cb4b23ccb","abstract_canon_sha256":"b6821bd7048ceadaaf8d09da24e60e3f6274dd8d21201adebdb608a8d74ed0a4"},"schema_version":"1.0"},"canonical_sha256":"65d9a5ae2808b0c35c690a3e561eff5ff9f366a359fc5957426d88a838ee9ecb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:54.343471Z","signature_b64":"LKnd+hU+Nfi6TIyhdszluQD+I11OOW2IfmF+gz5B5bxadXahbbQHZWoUE34C4B0Re4E9bckgCBykgcjtAErKCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65d9a5ae2808b0c35c690a3e561eff5ff9f366a359fc5957426d88a838ee9ecb","last_reissued_at":"2026-05-17T23:47:54.342649Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:54.342649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.10351","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":"2026-05-17T23:47:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MJsymeVvKa3NDcoSPPXNWdHrNXp2Cn1u2eFnw0e0wPPFCQrwDlbVK1QM2SocRc38EuYG7xVIbSBtl8HRu3fiCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T07:28:55.374702Z"},"content_sha256":"5fe500abacc4728e79d850ce4366eed81eb9dfb61b8f73f49009a8e0650005b7","schema_version":"1.0","event_id":"sha256:5fe500abacc4728e79d850ce4366eed81eb9dfb61b8f73f49009a8e0650005b7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:MXM2LLRIBCYMGXDJBI7FMHX7L7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Drishtikon: An advanced navigational aid system for visually impaired people","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"cs.HC","authors_text":"Nishant Kumar, Pankaj Kumar Sahu, Shashank Kotyan, Venkanna Udutalapally","submitted_at":"2019-04-23T14:23:49Z","abstract_excerpt":"Today, many of the aid systems deployed for visually impaired people are mostly made for a single purpose. Be it navigation, object detection, or distance perceiving. Also, most of the deployed aid systems use indoor navigation which requires a pre-knowledge of the environment. These aid systems often fail to help visually impaired people in the unfamiliar scenario. In this paper, we propose an aid system developed using object detection and depth perceivement to navigate a person without dashing into an object. The prototype developed detects 90 different types of objects and compute their di"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.10351","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":"2026-05-17T23:47:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"feWfcPvQH2owAebZ8ySmtAgZlS6PadYXrCAX1kHJcl/EwCvx1GtegGlx2ry7L1rvhMt+SL6kcJ177lCdoO6RDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T07:28:55.375043Z"},"content_sha256":"ff940ab3b91073a342f2cc524529df4012f7c73283d669220460fbfd0de0a5e7","schema_version":"1.0","event_id":"sha256:ff940ab3b91073a342f2cc524529df4012f7c73283d669220460fbfd0de0a5e7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MXM2LLRIBCYMGXDJBI7FMHX7L7/bundle.json","state_url":"https://pith.science/pith/MXM2LLRIBCYMGXDJBI7FMHX7L7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MXM2LLRIBCYMGXDJBI7FMHX7L7/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":"2026-06-03T07:28:55Z","links":{"resolver":"https://pith.science/pith/MXM2LLRIBCYMGXDJBI7FMHX7L7","bundle":"https://pith.science/pith/MXM2LLRIBCYMGXDJBI7FMHX7L7/bundle.json","state":"https://pith.science/pith/MXM2LLRIBCYMGXDJBI7FMHX7L7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MXM2LLRIBCYMGXDJBI7FMHX7L7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:MXM2LLRIBCYMGXDJBI7FMHX7L7","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":"b6821bd7048ceadaaf8d09da24e60e3f6274dd8d21201adebdb608a8d74ed0a4","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-04-23T14:23:49Z","title_canon_sha256":"3065b8d5fda02d2369d5c194f219c3b40edd2c0b96e9fc798ed7708cb4b23ccb"},"schema_version":"1.0","source":{"id":"1904.10351","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.10351","created_at":"2026-05-17T23:47:54Z"},{"alias_kind":"arxiv_version","alias_value":"1904.10351v1","created_at":"2026-05-17T23:47:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.10351","created_at":"2026-05-17T23:47:54Z"},{"alias_kind":"pith_short_12","alias_value":"MXM2LLRIBCYM","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"MXM2LLRIBCYMGXDJ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"MXM2LLRI","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:ff940ab3b91073a342f2cc524529df4012f7c73283d669220460fbfd0de0a5e7","target":"graph","created_at":"2026-05-17T23:47:54Z","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":"Today, many of the aid systems deployed for visually impaired people are mostly made for a single purpose. Be it navigation, object detection, or distance perceiving. Also, most of the deployed aid systems use indoor navigation which requires a pre-knowledge of the environment. These aid systems often fail to help visually impaired people in the unfamiliar scenario. In this paper, we propose an aid system developed using object detection and depth perceivement to navigate a person without dashing into an object. The prototype developed detects 90 different types of objects and compute their di","authors_text":"Nishant Kumar, Pankaj Kumar Sahu, Shashank Kotyan, Venkanna Udutalapally","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-04-23T14:23:49Z","title":"Drishtikon: An advanced navigational aid system for visually impaired people"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.10351","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":"sha256:5fe500abacc4728e79d850ce4366eed81eb9dfb61b8f73f49009a8e0650005b7","target":"record","created_at":"2026-05-17T23:47:54Z","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":"b6821bd7048ceadaaf8d09da24e60e3f6274dd8d21201adebdb608a8d74ed0a4","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-04-23T14:23:49Z","title_canon_sha256":"3065b8d5fda02d2369d5c194f219c3b40edd2c0b96e9fc798ed7708cb4b23ccb"},"schema_version":"1.0","source":{"id":"1904.10351","kind":"arxiv","version":1}},"canonical_sha256":"65d9a5ae2808b0c35c690a3e561eff5ff9f366a359fc5957426d88a838ee9ecb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65d9a5ae2808b0c35c690a3e561eff5ff9f366a359fc5957426d88a838ee9ecb","first_computed_at":"2026-05-17T23:47:54.342649Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:54.342649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LKnd+hU+Nfi6TIyhdszluQD+I11OOW2IfmF+gz5B5bxadXahbbQHZWoUE34C4B0Re4E9bckgCBykgcjtAErKCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:54.343471Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.10351","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5fe500abacc4728e79d850ce4366eed81eb9dfb61b8f73f49009a8e0650005b7","sha256:ff940ab3b91073a342f2cc524529df4012f7c73283d669220460fbfd0de0a5e7"],"state_sha256":"f04094b5ae025c9f5b9b00af94b1e0c7d5809a37bdd32229d4d92fd631ba3d44"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SL9tfHPtJh6O+Z/1KoRsZnWBI6mhz1LDBnjukPdyfob0X8XE5EfygjVC7LYgNU4hoXStz+hBwsgXVu+nU3ZqCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T07:28:55.376982Z","bundle_sha256":"93ec216bc78e7cced48fe35e7aeaac69b971c8e93a776969d1af7c3fa2d17dbf"}}