Tue, 09 May 2023 07:38:12 +0000
vision, visionscience, acuity, psychophysics, visualacuity

The Freiburg Vision Test FrACT₁₀ https://michaelbach.de/fract/ has learned something new: Assessment of grating contrast thresholds. You select spatial frequency and patch diameter (in Settings>Contrast), and it will hone in on the threshold. An approximate Gaussian window smoothes the grating edge. Error diffusion allows for accurate threshold in spite of 8 bit limits. Downloadable as WebApp. For giggles try 'Autorun to target contrast'.