A dependency-light Python script (standard library only) for running a subjective test. It prints (1) an environment-calibration checklist (lab vs home luminance, ~200 lux, D65 background, PLUGE display set-up, viewing distance in picture heights), (2) a per-participant pre-screening record (visual acuity on the Snellen 20/30 line, Ishihara colour vision, consent, non-expert confirmation), and (3) an implementation of the ITU-R BT.500-15 Annex 1 (§A1-2.3.1) kurtosis-based observer-rejection proc
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The handbook · 7 volumes
Fora Soft Video Engineering Handbook
This tool prints the lab calibration checklist and participant screening record and runs BT.500 kurtosis-based observer rejection. Our seven-volume handbook covers the bigger picture: Volume 1 on objective metrics such as VMAF that subjective tests calibrate, Volume 3 on QoE in delivery, and Volume 6 on AI models that learn from human ratings. Written by Nikolay Sapunov, CEO at Fora Soft.
Running a subjective video test and need a clean, repeatable procedure?
Tell us your lab or crowdsourcing setup: we return a run procedure, screening rules and an analysis plan for your observers' data. 250+ video products shipped since 2005.
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