tid2013_published — IMGMETRICS iqa op

• Data kinds: none → table (an op determined by its arguments alone — it takes no image or data input)

• Call: import fullseye as fs; fs.ledger.tid2013_published() -> 'Dict[str, Tuple[float, float]]' (to call the implementation directly, import iqatid; iqatid.tid2013_published() -> 'Dict[str, Tuple[float, float]]'; from the registry, opsimgmetrics.get("tid2013_published"))

Usage

The published rank-correlation table {metric: (SROCC, KROCC)} (14 metrics).

Source: https://www.ponomarenko.info/tid2013.htm (Last changed 2015-03-23), "Ranking of compared metrics in accordance with Spearman / Kendall correlation with MOS", identical to TABLE III / IV of the distribution's readme. The keys are the file names of the distribution's metrics_values/<key>.txt (lower case). From the bundled author values and mos.txt, with Spearman = average rank and Kendall = τ_b, all 14 metrics agree to 3 digits (|diff| ≤ 0.0005 / 0.00044, 2026-10-04). The page's opening "PSNR … is 0.69" and the usage example's "FSIMc Full : 0.666" disagree with the table (the former is a leftover from TID2008, the latter matches τ_a 0.66626 -- both are guesses), so they are not used in gates.

Detailed usage guide

• image_difference_metrics family guide

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• poc_iqa_fsim_gmsd_vif — py -3.11 examples/poc_iqa_fsim_gmsd_vif.py

• poc_iqa_tid2013 — py -3.11 examples/poc_iqa_tid2013.py

Ops the type connects to (they accept table as input)

luma_limited_u8 · rank_data · tid2013_index · tid2013_by_distortion

Same category (iqa)

luma_limited_u8 · rank_data · rank_spearman · rank_kendall_b · tid2013_root · tid2013_index · tid2013_metric_values · tid2013_evaluate

*Provenance: iqatid.py — IMGMETRICS operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.