{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:OXS5L5GFPJZGR3ZY6I65LQEWO7","short_pith_number":"pith:OXS5L5GF","canonical_record":{"source":{"id":"2106.07929","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-06-15T07:31:31Z","cross_cats_sorted":[],"title_canon_sha256":"bdc45e5f6fa3164d4c4ff490a07f10fc995099b6030f19b20a0651cce22fbb60","abstract_canon_sha256":"8bdf30737511a91c4d584eab50cb006233fdada2dc9002dfea60d496c69875ec"},"schema_version":"1.0"},"canonical_sha256":"75e5d5f4c57a7268ef38f23dd5c09677c07b44f995a61a8511c2177ac76d01b8","source":{"kind":"arxiv","id":"2106.07929","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.07929","created_at":"2026-07-05T04:55:36Z"},{"alias_kind":"arxiv_version","alias_value":"2106.07929v5","created_at":"2026-07-05T04:55:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.07929","created_at":"2026-07-05T04:55:36Z"},{"alias_kind":"pith_short_12","alias_value":"OXS5L5GFPJZG","created_at":"2026-07-05T04:55:36Z"},{"alias_kind":"pith_short_16","alias_value":"OXS5L5GFPJZGR3ZY","created_at":"2026-07-05T04:55:36Z"},{"alias_kind":"pith_short_8","alias_value":"OXS5L5GF","created_at":"2026-07-05T04:55:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:OXS5L5GFPJZGR3ZY6I65LQEWO7","target":"record","payload":{"canonical_record":{"source":{"id":"2106.07929","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-06-15T07:31:31Z","cross_cats_sorted":[],"title_canon_sha256":"bdc45e5f6fa3164d4c4ff490a07f10fc995099b6030f19b20a0651cce22fbb60","abstract_canon_sha256":"8bdf30737511a91c4d584eab50cb006233fdada2dc9002dfea60d496c69875ec"},"schema_version":"1.0"},"canonical_sha256":"75e5d5f4c57a7268ef38f23dd5c09677c07b44f995a61a8511c2177ac76d01b8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:55:36.167779Z","signature_b64":"eEgqhanmTroSjq7sm8mhpF3M8Rt2HwIfIk7hJ66f00n3Oj6LCKYbVyXm61CMouJqnQ9ovKoaiCy12rpuKmHFCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"75e5d5f4c57a7268ef38f23dd5c09677c07b44f995a61a8511c2177ac76d01b8","last_reissued_at":"2026-07-05T04:55:36.167388Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:55:36.167388Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.07929","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:55:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iPReQqBCDqZPdky/bIsS8Y1HgFEcY5cOv9tug0P5sqcOFLi/1jmPOrUBwej4sNlQWNed3jI0xqTE8DbxjgNnAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:47:38.448455Z"},"content_sha256":"d47214cfc38e1f7e15161098257b478efbfee6bfb760fdcde6e4b10a1c91222b","schema_version":"1.0","event_id":"sha256:d47214cfc38e1f7e15161098257b478efbfee6bfb760fdcde6e4b10a1c91222b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:OXS5L5GFPJZGR3ZY6I65LQEWO7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Image Feature Information Extraction for Interest Point Detection: A Review","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Changming Sun, Junfeng Jing, Tian Gao, Weichuan Zhang, Yongsheng Gao","submitted_at":"2021-06-15T07:31:31Z","abstract_excerpt":"Interest point detection is one of the most fundamental and critical problems in computer vision and image processing. In this paper, we carry out a comprehensive review on image feature information (IFI) extraction techniques for interest point detection. To systematically introduce how the existing interest point detection methods extract IFI from an input image, we propose a taxonomy of the IFI extraction techniques for interest point detection. According to this taxonomy, we discuss different types of IFI extraction techniques for interest point detection. Furthermore, we identify the main"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.07929","kind":"arxiv","version":5},"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/2106.07929/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":"2026-07-05T04:55:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XVt/XbA7hlKkM+ShrI4APGVxs7JfSJetn1DPCrjrtblMD9A444l10/WXuk2eogT9vlbg3uUX4bunOcEY2CWbDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:47:38.449450Z"},"content_sha256":"feed6923e27ef7db69fd2d7180225b8b67ad04245bbb0dcdfc43bbf3667931a4","schema_version":"1.0","event_id":"sha256:feed6923e27ef7db69fd2d7180225b8b67ad04245bbb0dcdfc43bbf3667931a4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OXS5L5GFPJZGR3ZY6I65LQEWO7/bundle.json","state_url":"https://pith.science/pith/OXS5L5GFPJZGR3ZY6I65LQEWO7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OXS5L5GFPJZGR3ZY6I65LQEWO7/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":"2026-08-03T16:47:38Z","links":{"resolver":"https://pith.science/pith/OXS5L5GFPJZGR3ZY6I65LQEWO7","bundle":"https://pith.science/pith/OXS5L5GFPJZGR3ZY6I65LQEWO7/bundle.json","state":"https://pith.science/pith/OXS5L5GFPJZGR3ZY6I65LQEWO7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OXS5L5GFPJZGR3ZY6I65LQEWO7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:OXS5L5GFPJZGR3ZY6I65LQEWO7","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":"8bdf30737511a91c4d584eab50cb006233fdada2dc9002dfea60d496c69875ec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-06-15T07:31:31Z","title_canon_sha256":"bdc45e5f6fa3164d4c4ff490a07f10fc995099b6030f19b20a0651cce22fbb60"},"schema_version":"1.0","source":{"id":"2106.07929","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.07929","created_at":"2026-07-05T04:55:36Z"},{"alias_kind":"arxiv_version","alias_value":"2106.07929v5","created_at":"2026-07-05T04:55:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.07929","created_at":"2026-07-05T04:55:36Z"},{"alias_kind":"pith_short_12","alias_value":"OXS5L5GFPJZG","created_at":"2026-07-05T04:55:36Z"},{"alias_kind":"pith_short_16","alias_value":"OXS5L5GFPJZGR3ZY","created_at":"2026-07-05T04:55:36Z"},{"alias_kind":"pith_short_8","alias_value":"OXS5L5GF","created_at":"2026-07-05T04:55:36Z"}],"graph_snapshots":[{"event_id":"sha256:feed6923e27ef7db69fd2d7180225b8b67ad04245bbb0dcdfc43bbf3667931a4","target":"graph","created_at":"2026-07-05T04:55:36Z","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/2106.07929/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Interest point detection is one of the most fundamental and critical problems in computer vision and image processing. In this paper, we carry out a comprehensive review on image feature information (IFI) extraction techniques for interest point detection. To systematically introduce how the existing interest point detection methods extract IFI from an input image, we propose a taxonomy of the IFI extraction techniques for interest point detection. According to this taxonomy, we discuss different types of IFI extraction techniques for interest point detection. Furthermore, we identify the main","authors_text":"Changming Sun, Junfeng Jing, Tian Gao, Weichuan Zhang, Yongsheng Gao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-06-15T07:31:31Z","title":"Image Feature Information Extraction for Interest Point Detection: A Review"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.07929","kind":"arxiv","version":5},"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:d47214cfc38e1f7e15161098257b478efbfee6bfb760fdcde6e4b10a1c91222b","target":"record","created_at":"2026-07-05T04:55:36Z","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":"8bdf30737511a91c4d584eab50cb006233fdada2dc9002dfea60d496c69875ec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-06-15T07:31:31Z","title_canon_sha256":"bdc45e5f6fa3164d4c4ff490a07f10fc995099b6030f19b20a0651cce22fbb60"},"schema_version":"1.0","source":{"id":"2106.07929","kind":"arxiv","version":5}},"canonical_sha256":"75e5d5f4c57a7268ef38f23dd5c09677c07b44f995a61a8511c2177ac76d01b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"75e5d5f4c57a7268ef38f23dd5c09677c07b44f995a61a8511c2177ac76d01b8","first_computed_at":"2026-07-05T04:55:36.167388Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:55:36.167388Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eEgqhanmTroSjq7sm8mhpF3M8Rt2HwIfIk7hJ66f00n3Oj6LCKYbVyXm61CMouJqnQ9ovKoaiCy12rpuKmHFCw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:55:36.167779Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.07929","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d47214cfc38e1f7e15161098257b478efbfee6bfb760fdcde6e4b10a1c91222b","sha256:feed6923e27ef7db69fd2d7180225b8b67ad04245bbb0dcdfc43bbf3667931a4"],"state_sha256":"da11234e48b6f2fcb281fce3157aff30fbdc123ea04320297f1a8d47ee5c8fb4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g+wkOD/xbFhDoz9b+46mJfjOye20xa7GpQBo3eyQVBBhz57rtLssyj686R3NRJAdtwoSrO/xQArxCj3lr+OsCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:47:38.457331Z","bundle_sha256":"1c3fe7793594ab34f481439479a94b363e196a531b27385ccfc15b79ea975107"}}