{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:232GWUPH344MCXGBB7U4EUM77W","short_pith_number":"pith:232GWUPH","canonical_record":{"source":{"id":"1309.4224","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-09-17T08:25:34Z","cross_cats_sorted":[],"title_canon_sha256":"7a1603ef8fcbb1c1ee48aaf08a06383718dd51c0980890df26d4c410740af501","abstract_canon_sha256":"4290c8056e1354acd38a251d81abfe7166b22fc9b213399ac68875962d38d8da"},"schema_version":"1.0"},"canonical_sha256":"d6f46b51e7df38c15cc10fe9c2519ffd825ad8a34757c89abb1a9c890dd202ec","source":{"kind":"arxiv","id":"1309.4224","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.4224","created_at":"2026-05-18T03:11:35Z"},{"alias_kind":"arxiv_version","alias_value":"1309.4224v2","created_at":"2026-05-18T03:11:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.4224","created_at":"2026-05-18T03:11:35Z"},{"alias_kind":"pith_short_12","alias_value":"232GWUPH344M","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"232GWUPH344MCXGB","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"232GWUPH","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:232GWUPH344MCXGBB7U4EUM77W","target":"record","payload":{"canonical_record":{"source":{"id":"1309.4224","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-09-17T08:25:34Z","cross_cats_sorted":[],"title_canon_sha256":"7a1603ef8fcbb1c1ee48aaf08a06383718dd51c0980890df26d4c410740af501","abstract_canon_sha256":"4290c8056e1354acd38a251d81abfe7166b22fc9b213399ac68875962d38d8da"},"schema_version":"1.0"},"canonical_sha256":"d6f46b51e7df38c15cc10fe9c2519ffd825ad8a34757c89abb1a9c890dd202ec","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:11:35.329876Z","signature_b64":"sZ4NTqOTfW56peT/oDzLbaaxumaHw8dhwqDecQ3uia7wZPa884WbRMT3wIxdwPo2wiCXAifJNFyn1JB4/pHnBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d6f46b51e7df38c15cc10fe9c2519ffd825ad8a34757c89abb1a9c890dd202ec","last_reissued_at":"2026-05-18T03:11:35.329364Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:11:35.329364Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.4224","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:11:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qcbsniUBy5B4WjNJE+wAmdT5o64nTkxGCc3kDzT2DMBjtHge+oU2TpcYngYtB+piUKcJgGUwNxDu/j+l7+MFBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:22:05.732402Z"},"content_sha256":"10e8b33ec2b811cdb2173d9d38f0979d6047d08dc1e08600d2ca4a6c0dedc70d","schema_version":"1.0","event_id":"sha256:10e8b33ec2b811cdb2173d9d38f0979d6047d08dc1e08600d2ca4a6c0dedc70d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:232GWUPH344MCXGBB7U4EUM77W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bad pixel modified interpolation for astronomical images","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Popowicz, A. R. Kurek, Z. Filus","submitted_at":"2013-09-17T08:25:34Z","abstract_excerpt":"We present a new method of interpolation for the pixel brightness estimation in astronomical images. Our new method is simple and easily implementable. We show the comparison of this method with the widely used linear interpolation and other interpolation algorithms using one thousand astronomical images obtained from the Sloan Digital Sky Survey. The comparison shows that our method improves bad pixels brightness estimation with four times lower mean error than the presently most popular linear interpolation and has a better performance than any other examined method. The presented idea is fl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.4224","kind":"arxiv","version":2},"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":"2026-05-18T03:11:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"80iy9z8YbXn9mC2ii377URZNxTGVwUv/K6g7CbzflpLzqATYE16d1P2NEpRQ37VbanNTRlOuTIDpHEJWfsMfAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:22:05.732743Z"},"content_sha256":"ded3e0d586b6e65139dad049df9fb59cdd2edc7b5b52cd6542ae244c871806c1","schema_version":"1.0","event_id":"sha256:ded3e0d586b6e65139dad049df9fb59cdd2edc7b5b52cd6542ae244c871806c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/232GWUPH344MCXGBB7U4EUM77W/bundle.json","state_url":"https://pith.science/pith/232GWUPH344MCXGBB7U4EUM77W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/232GWUPH344MCXGBB7U4EUM77W/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":"2026-06-05T22:22:05Z","links":{"resolver":"https://pith.science/pith/232GWUPH344MCXGBB7U4EUM77W","bundle":"https://pith.science/pith/232GWUPH344MCXGBB7U4EUM77W/bundle.json","state":"https://pith.science/pith/232GWUPH344MCXGBB7U4EUM77W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/232GWUPH344MCXGBB7U4EUM77W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:232GWUPH344MCXGBB7U4EUM77W","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":"4290c8056e1354acd38a251d81abfe7166b22fc9b213399ac68875962d38d8da","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-09-17T08:25:34Z","title_canon_sha256":"7a1603ef8fcbb1c1ee48aaf08a06383718dd51c0980890df26d4c410740af501"},"schema_version":"1.0","source":{"id":"1309.4224","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.4224","created_at":"2026-05-18T03:11:35Z"},{"alias_kind":"arxiv_version","alias_value":"1309.4224v2","created_at":"2026-05-18T03:11:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.4224","created_at":"2026-05-18T03:11:35Z"},{"alias_kind":"pith_short_12","alias_value":"232GWUPH344M","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"232GWUPH344MCXGB","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"232GWUPH","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:ded3e0d586b6e65139dad049df9fb59cdd2edc7b5b52cd6542ae244c871806c1","target":"graph","created_at":"2026-05-18T03:11:35Z","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":"We present a new method of interpolation for the pixel brightness estimation in astronomical images. Our new method is simple and easily implementable. We show the comparison of this method with the widely used linear interpolation and other interpolation algorithms using one thousand astronomical images obtained from the Sloan Digital Sky Survey. The comparison shows that our method improves bad pixels brightness estimation with four times lower mean error than the presently most popular linear interpolation and has a better performance than any other examined method. The presented idea is fl","authors_text":"A. Popowicz, A. R. Kurek, Z. Filus","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-09-17T08:25:34Z","title":"Bad pixel modified interpolation for astronomical images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.4224","kind":"arxiv","version":2},"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":"sha256:10e8b33ec2b811cdb2173d9d38f0979d6047d08dc1e08600d2ca4a6c0dedc70d","target":"record","created_at":"2026-05-18T03:11:35Z","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":"4290c8056e1354acd38a251d81abfe7166b22fc9b213399ac68875962d38d8da","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-09-17T08:25:34Z","title_canon_sha256":"7a1603ef8fcbb1c1ee48aaf08a06383718dd51c0980890df26d4c410740af501"},"schema_version":"1.0","source":{"id":"1309.4224","kind":"arxiv","version":2}},"canonical_sha256":"d6f46b51e7df38c15cc10fe9c2519ffd825ad8a34757c89abb1a9c890dd202ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d6f46b51e7df38c15cc10fe9c2519ffd825ad8a34757c89abb1a9c890dd202ec","first_computed_at":"2026-05-18T03:11:35.329364Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:11:35.329364Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sZ4NTqOTfW56peT/oDzLbaaxumaHw8dhwqDecQ3uia7wZPa884WbRMT3wIxdwPo2wiCXAifJNFyn1JB4/pHnBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:11:35.329876Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.4224","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:10e8b33ec2b811cdb2173d9d38f0979d6047d08dc1e08600d2ca4a6c0dedc70d","sha256:ded3e0d586b6e65139dad049df9fb59cdd2edc7b5b52cd6542ae244c871806c1"],"state_sha256":"0e83d46075adadf2f77bad61ee75b55df2b6f685596fb3a5a2e4a1db52e81560"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kZPhvz5X7w5b471id8maxAXV1/N7locApitPqbSrsrUJaSZraoakuriMJF097MVfAaslV464LrQgcyGzdtXtCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T22:22:05.734721Z","bundle_sha256":"0716b60e8aff9148fb59d0ef2c38a83df59f45a98554ecf2e1f8b9b139fe187f"}}