{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:VXRL6MDUMWQJNVJDKJ7US5DML3","short_pith_number":"pith:VXRL6MDU","canonical_record":{"source":{"id":"1811.10185","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-26T05:40:32Z","cross_cats_sorted":[],"title_canon_sha256":"53bb5e5dd4fe4706d54b3f5a0c4d953dedc1a26c62fe1357659dbf93865c881b","abstract_canon_sha256":"ed669c6d48bd5e2591cb2ebc2f3e9bf64732f99a74cddc67527b3087fc30c529"},"schema_version":"1.0"},"canonical_sha256":"ade2bf307465a096d523527f49746c5ed394820f4c55013787045bc6813409a5","source":{"kind":"arxiv","id":"1811.10185","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.10185","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"arxiv_version","alias_value":"1811.10185v3","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.10185","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"pith_short_12","alias_value":"VXRL6MDUMWQJ","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VXRL6MDUMWQJNVJD","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VXRL6MDU","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:VXRL6MDUMWQJNVJDKJ7US5DML3","target":"record","payload":{"canonical_record":{"source":{"id":"1811.10185","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-26T05:40:32Z","cross_cats_sorted":[],"title_canon_sha256":"53bb5e5dd4fe4706d54b3f5a0c4d953dedc1a26c62fe1357659dbf93865c881b","abstract_canon_sha256":"ed669c6d48bd5e2591cb2ebc2f3e9bf64732f99a74cddc67527b3087fc30c529"},"schema_version":"1.0"},"canonical_sha256":"ade2bf307465a096d523527f49746c5ed394820f4c55013787045bc6813409a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:22.230080Z","signature_b64":"kOCX1yX8yXS4gAJ8ifayEZ9WWzoCF5xyaQdyecw78abJbPmx8i4uyyRnBnGMmG8KLu7znSudT+JlostKea9RCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ade2bf307465a096d523527f49746c5ed394820f4c55013787045bc6813409a5","last_reissued_at":"2026-05-17T23:48:22.229538Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:22.229538Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.10185","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:48:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d7y+nze/Xewww9xgZXX5sbyuntwflfxbR5uneyV4vVnsP0Uqbe7hG4r/cSchdU72lMAqcmaZEHz5hCqwKJd3DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:39:35.049245Z"},"content_sha256":"41566d4950a433ac53e75ed10c9ad231e4c190f94780b904071e42a24fcfc80a","schema_version":"1.0","event_id":"sha256:41566d4950a433ac53e75ed10c9ad231e4c190f94780b904071e42a24fcfc80a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:VXRL6MDUMWQJNVJDKJ7US5DML3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phase-only Image Based Kernel Estimation for Single-image Blind Deblurring","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Liyuan Pan, Miaomiao Liu, Richard Hartley, Yuchao Dai","submitted_at":"2018-11-26T05:40:32Z","abstract_excerpt":"The image blurring process is generally modelled as the convolution of a blur kernel with a latent image. Therefore, the estimation of the blur kernel is essentially important for blind image deblurring. Unlike existing approaches which focus on approaching the problem by enforcing various priors on the blur kernel and the latent image, we are aiming at obtaining a high quality blur kernel directly by studying the problem in the frequency domain. We show that the auto-correlation of the absolute phase-only image can provide faithful information about the motion (e.g. the motion direction and m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.10185","kind":"arxiv","version":3},"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":"2026-05-17T23:48:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vEiGkoParS1AUEaREgTn8XnVF1dKXJtRAXvH9Fh8f92YaaRxutU3w/RyA8268ZrhfbJeSfvHYCiEcPlKK2P3Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:39:35.049607Z"},"content_sha256":"9a6a2f48bc5d9f20b937cac1a6046b04bd7e7915fa21eac372d7bf73f60290e6","schema_version":"1.0","event_id":"sha256:9a6a2f48bc5d9f20b937cac1a6046b04bd7e7915fa21eac372d7bf73f60290e6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VXRL6MDUMWQJNVJDKJ7US5DML3/bundle.json","state_url":"https://pith.science/pith/VXRL6MDUMWQJNVJDKJ7US5DML3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VXRL6MDUMWQJNVJDKJ7US5DML3/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":"2026-06-02T21:39:35Z","links":{"resolver":"https://pith.science/pith/VXRL6MDUMWQJNVJDKJ7US5DML3","bundle":"https://pith.science/pith/VXRL6MDUMWQJNVJDKJ7US5DML3/bundle.json","state":"https://pith.science/pith/VXRL6MDUMWQJNVJDKJ7US5DML3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VXRL6MDUMWQJNVJDKJ7US5DML3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VXRL6MDUMWQJNVJDKJ7US5DML3","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":"ed669c6d48bd5e2591cb2ebc2f3e9bf64732f99a74cddc67527b3087fc30c529","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-26T05:40:32Z","title_canon_sha256":"53bb5e5dd4fe4706d54b3f5a0c4d953dedc1a26c62fe1357659dbf93865c881b"},"schema_version":"1.0","source":{"id":"1811.10185","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.10185","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"arxiv_version","alias_value":"1811.10185v3","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.10185","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"pith_short_12","alias_value":"VXRL6MDUMWQJ","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VXRL6MDUMWQJNVJD","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VXRL6MDU","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:9a6a2f48bc5d9f20b937cac1a6046b04bd7e7915fa21eac372d7bf73f60290e6","target":"graph","created_at":"2026-05-17T23:48:22Z","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 image blurring process is generally modelled as the convolution of a blur kernel with a latent image. Therefore, the estimation of the blur kernel is essentially important for blind image deblurring. Unlike existing approaches which focus on approaching the problem by enforcing various priors on the blur kernel and the latent image, we are aiming at obtaining a high quality blur kernel directly by studying the problem in the frequency domain. We show that the auto-correlation of the absolute phase-only image can provide faithful information about the motion (e.g. the motion direction and m","authors_text":"Liyuan Pan, Miaomiao Liu, Richard Hartley, Yuchao Dai","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-26T05:40:32Z","title":"Phase-only Image Based Kernel Estimation for Single-image Blind Deblurring"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.10185","kind":"arxiv","version":3},"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":"sha256:41566d4950a433ac53e75ed10c9ad231e4c190f94780b904071e42a24fcfc80a","target":"record","created_at":"2026-05-17T23:48:22Z","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":"ed669c6d48bd5e2591cb2ebc2f3e9bf64732f99a74cddc67527b3087fc30c529","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-26T05:40:32Z","title_canon_sha256":"53bb5e5dd4fe4706d54b3f5a0c4d953dedc1a26c62fe1357659dbf93865c881b"},"schema_version":"1.0","source":{"id":"1811.10185","kind":"arxiv","version":3}},"canonical_sha256":"ade2bf307465a096d523527f49746c5ed394820f4c55013787045bc6813409a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ade2bf307465a096d523527f49746c5ed394820f4c55013787045bc6813409a5","first_computed_at":"2026-05-17T23:48:22.229538Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:22.229538Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kOCX1yX8yXS4gAJ8ifayEZ9WWzoCF5xyaQdyecw78abJbPmx8i4uyyRnBnGMmG8KLu7znSudT+JlostKea9RCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:22.230080Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.10185","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:41566d4950a433ac53e75ed10c9ad231e4c190f94780b904071e42a24fcfc80a","sha256:9a6a2f48bc5d9f20b937cac1a6046b04bd7e7915fa21eac372d7bf73f60290e6"],"state_sha256":"d35746bcbd9696a651f14ce4031161719267b4512eec79d4ba0d68f502882f81"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"31ngvLz7zgIGEyYKVaVUav2KNw9CiabPcDLALrs/QKxJ8XB5FWwFwFjVm6fNmCOp3H6sKCL7evzUMhH2nEI6Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T21:39:35.051540Z","bundle_sha256":"f34b02948da3eb94f9adec0ebee92fe7a717c2fd14bd21f79cc25ca171b41175"}}