{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:4VUTKCSHYF5E6RVXQONGVDVVMG","short_pith_number":"pith:4VUTKCSH","canonical_record":{"source":{"id":"2202.11038","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2022-02-22T17:13:07Z","cross_cats_sorted":["eess.IV"],"title_canon_sha256":"20d87bca5db73165524c99040628e0f60dc5b904333ee000af4f17fb99f9d3da","abstract_canon_sha256":"4beac459e055abdbd37d1ae663b6d3e15dd0cd1ca2525da28a45dec9f1f6d3b2"},"schema_version":"1.0"},"canonical_sha256":"e569350a47c17a4f46b7839a6a8eb561b9b06a749dfb3967a449f5987b544f09","source":{"kind":"arxiv","id":"2202.11038","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.11038","created_at":"2026-07-05T03:59:10Z"},{"alias_kind":"arxiv_version","alias_value":"2202.11038v1","created_at":"2026-07-05T03:59:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.11038","created_at":"2026-07-05T03:59:10Z"},{"alias_kind":"pith_short_12","alias_value":"4VUTKCSHYF5E","created_at":"2026-07-05T03:59:10Z"},{"alias_kind":"pith_short_16","alias_value":"4VUTKCSHYF5E6RVX","created_at":"2026-07-05T03:59:10Z"},{"alias_kind":"pith_short_8","alias_value":"4VUTKCSH","created_at":"2026-07-05T03:59:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:4VUTKCSHYF5E6RVXQONGVDVVMG","target":"record","payload":{"canonical_record":{"source":{"id":"2202.11038","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2022-02-22T17:13:07Z","cross_cats_sorted":["eess.IV"],"title_canon_sha256":"20d87bca5db73165524c99040628e0f60dc5b904333ee000af4f17fb99f9d3da","abstract_canon_sha256":"4beac459e055abdbd37d1ae663b6d3e15dd0cd1ca2525da28a45dec9f1f6d3b2"},"schema_version":"1.0"},"canonical_sha256":"e569350a47c17a4f46b7839a6a8eb561b9b06a749dfb3967a449f5987b544f09","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:59:10.793206Z","signature_b64":"4Ki/A/Gz5c4HIAShieMEmtvtu9+Ic2QxrsPbRRy6mQduU/O0M62FP+iaXartj0VlzfPRBmE95E0+89McnT+hDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e569350a47c17a4f46b7839a6a8eb561b9b06a749dfb3967a449f5987b544f09","last_reissued_at":"2026-07-05T03:59:10.792742Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:59:10.792742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.11038","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":"2026-07-05T03:59:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"anYLlaNLsjnQNe+DlSnzIsoHveoM83kjuUVZMkDlRWpZAL9vx9MzWlkvVioAYgaz+m8/N2ZRyYsAoF8O5/+PAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T14:48:25.078072Z"},"content_sha256":"3a14f19b0f6bdd5038bf713b69dddc4bdd42c3609d844a557ebb80fdf0220407","schema_version":"1.0","event_id":"sha256:3a14f19b0f6bdd5038bf713b69dddc4bdd42c3609d844a557ebb80fdf0220407"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:4VUTKCSHYF5E6RVXQONGVDVVMG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Banding vs. Quality: Perceptual Impact and Objective Assessment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.IV"],"primary_cat":"cs.MM","authors_text":"Christos G. Bampis, Joel Sole, Luk\\'a\\v{s} Krasula, Mariana Afonso, Nil Fons Miret, Zhi Li","submitted_at":"2022-02-22T17:13:07Z","abstract_excerpt":"Staircase-like contours introduced to a video by quantization in flat areas, commonly known as banding, have been a long-standing problem in both video processing and quality assessment communities. The fact that even a relatively small change of the original pixel values can result in a strong impact on perceived quality makes banding especially difficult to be detected by objective quality metrics. In this paper, we study how banding annoyance compares to more commonly studied scaling and compression artifacts with respect to the overall perceptual quality. We further propose a simple combin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.11038","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2202.11038/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":"2026-07-05T03:59:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WJtbyIVw2MaNW7S745ZRmOcwiOrbrK0/Im6WN1rSEKWGVfSiMFxKt0gjt/746RjYIkfQ7jsJ91ycVmQ45IdjAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T14:48:25.078623Z"},"content_sha256":"fbc0702c3f2d4e6622f7a5a30da98eec0243e3f5fe1a3e903757f97bd7161ad7","schema_version":"1.0","event_id":"sha256:fbc0702c3f2d4e6622f7a5a30da98eec0243e3f5fe1a3e903757f97bd7161ad7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4VUTKCSHYF5E6RVXQONGVDVVMG/bundle.json","state_url":"https://pith.science/pith/4VUTKCSHYF5E6RVXQONGVDVVMG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4VUTKCSHYF5E6RVXQONGVDVVMG/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":"2026-08-19T14:48:25Z","links":{"resolver":"https://pith.science/pith/4VUTKCSHYF5E6RVXQONGVDVVMG","bundle":"https://pith.science/pith/4VUTKCSHYF5E6RVXQONGVDVVMG/bundle.json","state":"https://pith.science/pith/4VUTKCSHYF5E6RVXQONGVDVVMG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4VUTKCSHYF5E6RVXQONGVDVVMG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:4VUTKCSHYF5E6RVXQONGVDVVMG","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":"4beac459e055abdbd37d1ae663b6d3e15dd0cd1ca2525da28a45dec9f1f6d3b2","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2022-02-22T17:13:07Z","title_canon_sha256":"20d87bca5db73165524c99040628e0f60dc5b904333ee000af4f17fb99f9d3da"},"schema_version":"1.0","source":{"id":"2202.11038","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.11038","created_at":"2026-07-05T03:59:10Z"},{"alias_kind":"arxiv_version","alias_value":"2202.11038v1","created_at":"2026-07-05T03:59:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.11038","created_at":"2026-07-05T03:59:10Z"},{"alias_kind":"pith_short_12","alias_value":"4VUTKCSHYF5E","created_at":"2026-07-05T03:59:10Z"},{"alias_kind":"pith_short_16","alias_value":"4VUTKCSHYF5E6RVX","created_at":"2026-07-05T03:59:10Z"},{"alias_kind":"pith_short_8","alias_value":"4VUTKCSH","created_at":"2026-07-05T03:59:10Z"}],"graph_snapshots":[{"event_id":"sha256:fbc0702c3f2d4e6622f7a5a30da98eec0243e3f5fe1a3e903757f97bd7161ad7","target":"graph","created_at":"2026-07-05T03:59:10Z","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/2202.11038/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Staircase-like contours introduced to a video by quantization in flat areas, commonly known as banding, have been a long-standing problem in both video processing and quality assessment communities. The fact that even a relatively small change of the original pixel values can result in a strong impact on perceived quality makes banding especially difficult to be detected by objective quality metrics. In this paper, we study how banding annoyance compares to more commonly studied scaling and compression artifacts with respect to the overall perceptual quality. We further propose a simple combin","authors_text":"Christos G. Bampis, Joel Sole, Luk\\'a\\v{s} Krasula, Mariana Afonso, Nil Fons Miret, Zhi Li","cross_cats":["eess.IV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2022-02-22T17:13:07Z","title":"Banding vs. Quality: Perceptual Impact and Objective Assessment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.11038","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":"sha256:3a14f19b0f6bdd5038bf713b69dddc4bdd42c3609d844a557ebb80fdf0220407","target":"record","created_at":"2026-07-05T03:59:10Z","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":"4beac459e055abdbd37d1ae663b6d3e15dd0cd1ca2525da28a45dec9f1f6d3b2","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2022-02-22T17:13:07Z","title_canon_sha256":"20d87bca5db73165524c99040628e0f60dc5b904333ee000af4f17fb99f9d3da"},"schema_version":"1.0","source":{"id":"2202.11038","kind":"arxiv","version":1}},"canonical_sha256":"e569350a47c17a4f46b7839a6a8eb561b9b06a749dfb3967a449f5987b544f09","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e569350a47c17a4f46b7839a6a8eb561b9b06a749dfb3967a449f5987b544f09","first_computed_at":"2026-07-05T03:59:10.792742Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:59:10.792742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4Ki/A/Gz5c4HIAShieMEmtvtu9+Ic2QxrsPbRRy6mQduU/O0M62FP+iaXartj0VlzfPRBmE95E0+89McnT+hDg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:59:10.793206Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.11038","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a14f19b0f6bdd5038bf713b69dddc4bdd42c3609d844a557ebb80fdf0220407","sha256:fbc0702c3f2d4e6622f7a5a30da98eec0243e3f5fe1a3e903757f97bd7161ad7"],"state_sha256":"f076092c7fe66e6cf8fb6a4aae632f035f753be9ce73841e1e8e1ded9761f3db"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CfXqrYcUVueaUcxr/RfBerJzUsMjyl6u0ZCc7aobfHi2CcUOLVBhS3nd4iXt2GHSRa2wBITh+fIp/V4K389KDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T14:48:25.083357Z","bundle_sha256":"24833245c246b168a6e992004a99027feac9af9f66ea1fcd7abe92cb3fe9519b"}}