August 2014
Volume 14, Issue 10
Vision Sciences Society Annual Meeting Abstract  |   August 2014
A model of symbol discrimination in vibration blur
Author Affiliations
  • Albert Ahumada
    NASA Ames Research Center
  • Bernard Adelstein
    NASA Ames Research Center
  • Andrew Watson
    NASA Ames Research Center
  • Brent Beutter
    NASA Ames Research Center
  • Giovanna Guerara-Flores
    San Jose State University Foundation
Journal of Vision August 2014, Vol.14, 1178. doi:
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      Albert Ahumada, Bernard Adelstein, Andrew Watson, Brent Beutter, Giovanna Guerara-Flores; A model of symbol discrimination in vibration blur . Journal of Vision 2014;14(10):1178.

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      © ARVO (1962-2015); The Authors (2016-present)

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Because crews in aerospace vehicles can be exposed to significant vibration, Adelstein, Kaiser, Beutter, McCann, and Anderson (Acta Astronautica, 2012) examined the effect of vibrating observers at 12 Hz on their ability to read numeric symbols on stationary displays and found performance degradation with increasing vibration amplitude. The observer's task was to read a trigram of digits and respond by pressing the right button if the digit sequence was monotonic increasing or pressing the left button if was not. They also showed the efficacy of a display-strobing countermeasure for the reading decrements. We have adapted the model of Watson and Ahumada (J. Vis., 2008) for predicting letter identification in the presence of optical blur to the prediction of the effects of sinusoidal vibration blur on their reading task. The blur kernel was the one dimensional orthogonal projection of a circle. The model can account for the degradation caused by motion blur and the release from degradation resulting from strobing the backlight of the display with varying strobe duty cycles.

Meeting abstract presented at VSS 2014


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