BACKGROUND Electronic display devices hold the potential to improve access to written material by people with low vision. For those with central field loss, the optimal form of electronic text presentation may vary according to the location of the preferred retinal locus, but this has never been investigated. In this study, we examined the relationship between preferred retinal locus location a...

PURPOSE Human vision has a puzzling stereoscopic anisotropy: horizontal depth corrugations are easier to detect than vertical depth corrugations. To date, little is known about the function or the underlying mechanism responsible for this anisotropy. Here, we aim to find out whether this anisotropy is independent of age. To answer this, we compare detection thresholds for horizontal and vertica...

A theory of eecient stereo coding 2] predicts that, in a natural visual environment, where the ocular correlation of the input depends on stimulus orientations, the striate cortical cells are more likely binocular when selective to horizontal rather than vertical orientations. A psychophysical experiment was designed to test this prediction. The interocular transfers of simultaneous orientation...

PURPOSE English-language text is almost always written horizontally. Text can be formatted to run vertically, but this is seldom used. Several studies have found that horizontal text can be read faster than vertical text in the central visual field. No studies have investigated the peripheral visual field. Studies have also concluded that training can improve reading speed in the peripheral vis...

Previous work in automatic affect analysis (AAA) has emphasized static expressions to the neglect of the dynamics of facial movement and considered head movement only a nuisance variable to control. We investigated whether the dynamics of head and facial movements apart from specific facial expressions communicate affect in infants, an under-studied population in AAA. Age-appropriate tasks were...

We investigated the effect of adaptation on orientation discrimination using two experienced observers, then replicated the main effects using a total of 50 naïve subjects. Orientation discrimination around vertical improved after adaptation to either horizontal or vertical gratings, but was impaired by adaptation at 7.5 or 15 degrees from vertical. Improvement was greatest when adapter and tes...

Beküldte Németh Gábor 2. k, 2014-07-22 14:55 Hantos N [1], Balázs P [2]. Reconstruction and Enumeration of hv-Convex Polyominoes with Given Horizontal Projection [3]. In: Ruiz-Shulcloper J [4], Sanniti di Baja G [5], editors. Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications (CIARP). Heidelberg; London; New York: Springer; 2013. 1. p. 100-107p. (LNCS).Doktori is...

Synonyms – Panoramic camera, spherical camera, catadioptric camera, fisheye camera, wide-angle camera Related Concepts – camera calibration – pinhole camera – radial distortion – omnidirectional vision – camera parameter (intrinsic, extrinsic) – intrinsic parameter matrix – structure from motion – epipolar geometry Definition An omnidirectional camera (from omni, meaning all) is a camera with a...

The wallpaper illusion, first described over a century ago, can occur when a person with normal binocular vision views a pattern that is periodic in the horizontal meridian of the visual field. Escalator trends present such a pattern. Evidence is presented favoring the view that disorientation experienced by escalator riders is caused by this illusion. Possibly some of the estimated 60,000 esca...

We present a horizontal life-sized desk display called the Escritoire. It fills a much larger visual angle than a conventional monitor, and thus exploits the user’s peripheral vision. Two-handed input over the extent of the user’s reach allows a style of working more like a real desk, and, using two desks, participants in a video conference can share a virtual space for remote collaboration.