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Title: Uncomfortable images
Author: Fernandez, D. A. W.
ISNI:       0000 0004 2675 3369
Awarding Body: The University of Essex
Current Institution: University of Essex
Date of Award: 2008
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When viewing complex images, discomfort was best predicted from how contrast energy was distributed across spatial frequencies. Images rated as uncomfortable to view ded to have greater amplitude close to 3 cycles/degree; within their radially averaged Fourier amplitude spectra, relative to elsewhere in the spectrum. Luminance gratings with spatial frequencies of 3 cycles/degree are those most likely to elicit epileptiform activity, migraine, discomfort, and visuo-perceptual distortions (Wilkins et al., 1984). We conclude that uncomfortable images contain greater relative contrast energy at those spatial frequencies to which the visual system is generally most sensitive.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available