Effects of indirect screen vision and tool-use on the time and precision of object positioning on real-world targets


A current approach for surgical imaging is to employ a single camera with a fisheye lens, the latter providing a hemispherical focus of vision with poor off-axis resolution and aberrant shape contrast effects at the edges of objects viewed on the screen. We built an experimental platform for testing effects of fisheye screen representations of a Gestural Action Field (GAF) on the effectiveness of tool-mediated object positioning on predefined target locations within the GAF. Six men and six women had to place a small object on the centre of five successive target positions, using a tool or not (control), in successive trials while viewing the GAF 1) directly in front of them 2) on a 2D screen in fisheye or 3) in corrected 2D view. Results show that fisheye viewing and corrected 2D viewing have significantly detrimental effect on time (seconds) and precision (pixels) of the positioning task. These effects significantly depend on whether a tool is used or not to displace the object.

This paper has been published in ECVP 2016, Barcelona.

You can find the publication here

Published by aubatmaz

I am a Post-Doctoral fellow at Simon Fraser University, Canada

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