Imaging Science Research Talk: Quantitative characterization of human visual behavior: accommodation, motion perception, and temporal processing
Imaging Science Research Talk
Quantitative characterization of human visual behavior: accommodation, motion perception, and temporal processing
Dr. Benjamin Ming Chin
Berkeley School of Optometry
University of California
Abstract:
The ease with which human beings interact with and navigate our environment testifies to the success of human vision as an imaging system. I will present research on three fundamental visual tasks that are performed frequently in daily life, yet are highly complex from a computational standpoint. First, I will present objective measurements of the eye’s focusing response, known as accommodation. These measurements indicate that accommodation is systematically modulated by the spectral content of light entering the eye. Then, I will describe findings on the mechanisms involved in the human ability to perceive motion. Specifically, I will show that the human visual system utilizes optimal computations to extract information about speed from naturalistic image movies. Finally, I will show that the ability to perceive depth is impacted by differences in temporal processing dynamics between the eyes. I will demonstrate experimental methods for quantifying these dynamics, and propose a theory that successfully predicts their effects on the perception of motion-in-depth.
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