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Setting blurred images in motion improves perception
Date:9/27/2013

Philadelphia, Pa. (September 26, 2013) - Blurred images that are unidentifiable as still pictures become understandable once the images are set in motion. That's because of a phenomenon called "optic flow"which may be especially relevant as a source of visual information in people with low vision, reports a study 'With an Eye to Low Vision: Optic Flow Enables Perception Despite Image Blur' (published online ahead of print, September 3, 2013) in the October issue of Optometry and Vision Science official journal of the American Academy of Optometry. The journal is published by Lippincott Williams & Wilkins, a part of Wolters Kluwer Health.

The concept of optic flow "has important implications for understanding of the daily functioning of observers with low vision," according to the report by Jing Samantha Pan, MA, and Geoffrey P. Bingham, PhD, of Indiana University, Bloomington. "For low-vision observers, static image information is not the only (or perhaps even the primary) source of information about [their] surroundings."

Despite Blur, Motion Improves Perception of Events

The researchers designed a study to assess the contributions of static images and optic flow to identifying events in the environment. They took short videos of everyday activities, such as a woman pouring a drink, a man bowling, and two people dancing. The black-and-white videos were then blurredsimilar to what might be seen by a person with low visionand split into 20 frames.

Volunteers with normal vision were then presented with the blurred images and asked to describe what they saw. First, static im
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Contact: Connie Hughes
connie.hughes@wolterskluwer.com
646-674-6348
Wolters Kluwer Health
Source:Eurekalert

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