{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:FBGY4VRUEB6GZ5C4ZTQN3SR54Z","short_pith_number":"pith:FBGY4VRU","canonical_record":{"source":{"id":"1504.01420","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-04-06T21:27:45Z","cross_cats_sorted":[],"title_canon_sha256":"6d59d1c495d8146a30a63f18a61fc949e4ccdebe110f71fecff4bff227966dd7","abstract_canon_sha256":"67dfb544f2fceb17d873cbb6f5a729dd6c02b3f9281692663d97123fbb97e10b"},"schema_version":"1.0"},"canonical_sha256":"284d8e5634207c6cf45ccce0ddca3de653013d49167cc478b764fde1fa77b9d8","source":{"kind":"arxiv","id":"1504.01420","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.01420","created_at":"2026-05-18T02:19:27Z"},{"alias_kind":"arxiv_version","alias_value":"1504.01420v1","created_at":"2026-05-18T02:19:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.01420","created_at":"2026-05-18T02:19:27Z"},{"alias_kind":"pith_short_12","alias_value":"FBGY4VRUEB6G","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FBGY4VRUEB6GZ5C4","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FBGY4VRU","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:FBGY4VRUEB6GZ5C4ZTQN3SR54Z","target":"record","payload":{"canonical_record":{"source":{"id":"1504.01420","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-04-06T21:27:45Z","cross_cats_sorted":[],"title_canon_sha256":"6d59d1c495d8146a30a63f18a61fc949e4ccdebe110f71fecff4bff227966dd7","abstract_canon_sha256":"67dfb544f2fceb17d873cbb6f5a729dd6c02b3f9281692663d97123fbb97e10b"},"schema_version":"1.0"},"canonical_sha256":"284d8e5634207c6cf45ccce0ddca3de653013d49167cc478b764fde1fa77b9d8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:19:27.271363Z","signature_b64":"kF32LP11mULzpI2XEg+joSow7VP82LbCwWK8JOosht54jgKz6RsT3b4kNWHFl/zIUh9Ks5isIFSUucUZJhonBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"284d8e5634207c6cf45ccce0ddca3de653013d49167cc478b764fde1fa77b9d8","last_reissued_at":"2026-05-18T02:19:27.270628Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:19:27.270628Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.01420","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":"2026-05-18T02:19:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ldypRovdaMSF72Vh5l4X34urY2E041h5B8/huduYTw/XglUHcfDZdfbq4d/IJG1MnCqipCTXWMxt/ZCaRj0mAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T22:37:48.886803Z"},"content_sha256":"ed129e915e769d50c4b251917447ad02d4ca4835c0859c8cc4665264911fdcbe","schema_version":"1.0","event_id":"sha256:ed129e915e769d50c4b251917447ad02d4ca4835c0859c8cc4665264911fdcbe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:FBGY4VRUEB6GZ5C4ZTQN3SR54Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Knowledge driven Offline to Online Script Conversion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Akhilesh Srivastava, Devanuj, P.V.S. Rao, Sunil Kopparapu","submitted_at":"2015-04-06T21:27:45Z","abstract_excerpt":"The problem of offline to online script conversion is a challenging and an ill-posed problem. The interest in offline to online conversion exists because there are a plethora of robust algorithms in online script literature which can not be used on offline scripts. In this paper, we propose a method, based on heuristics, to extract online script information from offline bitmap image. We show the performance of the proposed method on a real sample signature offline image, whose online information is known."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.01420","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":"2026-05-18T02:19:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5pidZdAJ/syfAlHFCnZBWyRLEyhLkPmHfOUcYHfaDNmWyKmcszlyyuuXr8iy8wLyzkG4aYOfKRLGmqQNIRboDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T22:37:48.887143Z"},"content_sha256":"e4fea315ea7c9e2b51980d16de2949bdf57d36ffecb8c1a87a4f9a4ad2fd0f43","schema_version":"1.0","event_id":"sha256:e4fea315ea7c9e2b51980d16de2949bdf57d36ffecb8c1a87a4f9a4ad2fd0f43"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FBGY4VRUEB6GZ5C4ZTQN3SR54Z/bundle.json","state_url":"https://pith.science/pith/FBGY4VRUEB6GZ5C4ZTQN3SR54Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FBGY4VRUEB6GZ5C4ZTQN3SR54Z/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":"2026-06-21T22:37:48Z","links":{"resolver":"https://pith.science/pith/FBGY4VRUEB6GZ5C4ZTQN3SR54Z","bundle":"https://pith.science/pith/FBGY4VRUEB6GZ5C4ZTQN3SR54Z/bundle.json","state":"https://pith.science/pith/FBGY4VRUEB6GZ5C4ZTQN3SR54Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FBGY4VRUEB6GZ5C4ZTQN3SR54Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:FBGY4VRUEB6GZ5C4ZTQN3SR54Z","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":"67dfb544f2fceb17d873cbb6f5a729dd6c02b3f9281692663d97123fbb97e10b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-04-06T21:27:45Z","title_canon_sha256":"6d59d1c495d8146a30a63f18a61fc949e4ccdebe110f71fecff4bff227966dd7"},"schema_version":"1.0","source":{"id":"1504.01420","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.01420","created_at":"2026-05-18T02:19:27Z"},{"alias_kind":"arxiv_version","alias_value":"1504.01420v1","created_at":"2026-05-18T02:19:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.01420","created_at":"2026-05-18T02:19:27Z"},{"alias_kind":"pith_short_12","alias_value":"FBGY4VRUEB6G","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FBGY4VRUEB6GZ5C4","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FBGY4VRU","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:e4fea315ea7c9e2b51980d16de2949bdf57d36ffecb8c1a87a4f9a4ad2fd0f43","target":"graph","created_at":"2026-05-18T02:19:27Z","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":"The problem of offline to online script conversion is a challenging and an ill-posed problem. The interest in offline to online conversion exists because there are a plethora of robust algorithms in online script literature which can not be used on offline scripts. In this paper, we propose a method, based on heuristics, to extract online script information from offline bitmap image. We show the performance of the proposed method on a real sample signature offline image, whose online information is known.","authors_text":"Akhilesh Srivastava, Devanuj, P.V.S. Rao, Sunil Kopparapu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-04-06T21:27:45Z","title":"Knowledge driven Offline to Online Script Conversion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.01420","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:ed129e915e769d50c4b251917447ad02d4ca4835c0859c8cc4665264911fdcbe","target":"record","created_at":"2026-05-18T02:19:27Z","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":"67dfb544f2fceb17d873cbb6f5a729dd6c02b3f9281692663d97123fbb97e10b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-04-06T21:27:45Z","title_canon_sha256":"6d59d1c495d8146a30a63f18a61fc949e4ccdebe110f71fecff4bff227966dd7"},"schema_version":"1.0","source":{"id":"1504.01420","kind":"arxiv","version":1}},"canonical_sha256":"284d8e5634207c6cf45ccce0ddca3de653013d49167cc478b764fde1fa77b9d8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"284d8e5634207c6cf45ccce0ddca3de653013d49167cc478b764fde1fa77b9d8","first_computed_at":"2026-05-18T02:19:27.270628Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:19:27.270628Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kF32LP11mULzpI2XEg+joSow7VP82LbCwWK8JOosht54jgKz6RsT3b4kNWHFl/zIUh9Ks5isIFSUucUZJhonBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:19:27.271363Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.01420","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ed129e915e769d50c4b251917447ad02d4ca4835c0859c8cc4665264911fdcbe","sha256:e4fea315ea7c9e2b51980d16de2949bdf57d36ffecb8c1a87a4f9a4ad2fd0f43"],"state_sha256":"8d8c7fc7326bedfa69f8139767d5340abfdbcc731eab10d7ed16a5bb058db90a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"13G2XescxrwI7vc9cfgV1yXrADMDgC/Gah0g9ypVLb8BwWFFDo61KNSnf+t0f+HGXacLjC6y7UQLb1i27jrRDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-21T22:37:48.889100Z","bundle_sha256":"0d195ff15063327760bf8222c825c7029a9d7402a6a80d0cab1cc06378ac2df7"}}