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Asked: 2026-05-27T16:59:40+00:00

In order to avoid retinal persistence after the presentation of a stimuli, I need

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In order to avoid “retinal persistence” after the presentation of a stimuli, I need to create a visual noise mask.

enter image description here

This for a screen that has a dimension, in pixel of : 1280 * 960

I believe I could randomly (uniform) assign gray shade to pixels but my attempts yet failed.

Thank you for your attention.

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1 Answer

  1. Editorial Team

    Did you try looking in the help docs? One of the first examples for Image should have done it.

    Image@RandomReal[1, {960, 1280}]

    You can specify a different range of values:

    Image@RandomReal[{0.4, 1}, {400, 600}]

    Mathematica graphics

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