Vision: Subjective and Objective Issues. Oleh Tretiak Medical Imaging Systems 2002. Why Study Vision. Understand how to display images Understand what is seen Understand how vision works. Sources of Information. Physics of vision Neurophysiology of vision Psychology of vision
Medical Imaging Systems
The model is due to Gullstrand (1924). The power of the eye in this model ranges from 58.64 dptr (diopters) to 70.57 dptr. Most of the refraction (43 dptr) is due to the cornea.
Background = 245, circles = 210, 225, and 235
Background = 70, circle = 60
Subjective (perceived) value
Objective value (intensity)