Compensation for Blur Requires Increase in Field of View and Viewing Time.

ABSTRACT: Spatial resolution is an important factor for human pattern recognition. In particular, low resolution (blur) is a defining characteristic of low vision. Here, we examined spatial (field of view) and temporal (stimulus duration) requirements for blurry object recognition. The spatial resolution of an image such as letter or face, was manipulated with a low-pass filter. In experiment 1, studying spatial requirement, observers viewed a fixed-size object through a window of varying sizes, which was repositioned until object identification (moving window paradigm). Field of view requirement, quantified as the number of "views" (window repositions) for correct recognition, was obtained for three blur levels, including no blur. In experiment 2, studying temporal requirement, we determined thresh

SUBMITTER: Kwon M 

PROVIDER: S-EPMC5021298 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature