silvanus930
CMS: overview, score column, filtering/sorting, charts, CQ health, calibration UI, library browser, alerts, auth
b84c410 | """The real validator compression-score formula, kept in one place so every | |
| part of the CMS (ingest, CQ-table health, calibration browser) scores | |
| consistently. Mirrors services/scoring/scoring_function.py -- see | |
| scripts/real_validator_score_test.py for the literal-code cross-check this | |
| was validated against earlier in the session. | |
| """ | |
| from __future__ import annotations | |
| import math | |
| def compression_score(ratio: float | None, vmaf: float | None, vmaf_threshold: float | None) -> float | None: | |
| if ratio is None or vmaf is None or vmaf_threshold is None: | |
| return None | |
| if ratio <= 0 or ratio >= 0.80: | |
| return 0.0 | |
| hard_cutoff = vmaf_threshold - 5 | |
| if vmaf < hard_cutoff: | |
| return 0.0 | |
| r = 1.0 / ratio | |
| if vmaf >= vmaf_threshold: | |
| q = 0.7 + 0.3 * min(1.0, (vmaf - vmaf_threshold) / (100 - vmaf_threshold)) | |
| comp = ((r - 1.25) / 18.75) ** 0.9 if r <= 20 else 1.0 + 0.1 * math.log(r / 20) | |
| return min(1.0, (0.7 * comp + 0.3 * q) / 1.12) | |
| soft = (vmaf - hard_cutoff) / 5 | |
| qf = 0.7 * soft ** 2 | |
| comp = ((r - 1) / 19) ** 1.5 if r <= 20 else 1.0 + 0.3 * math.log(r / 20) | |
| return min(1.0, comp * qf / 1.12) | |