نتایج جستجو برای: orientation and vision

تعداد نتایج: 16851077  

Journal: :Vision Research 2010
David Alais Jeroen J. van Boxtel Amanda Parker Raymond van Ee

A previous study has shown that diverting attention from binocular rivalry to a visual distractor task results in a slowing of rivalry alternation rate between simple orthogonal orientations. Here, we investigate whether the slowing of visual perceptual alternations will occur when attention is diverted to an auditory distractor task, and we extend the investigation by testing this for two kind...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده فنی 1393

a problem of computer vision applications is to detect regions of interest under dif- ferent imaging conditions. the state-of-the-art maximally stable extremal regions (mser) detects affine covariant regions by applying all possible thresholds on the input image, and through three main steps including: 1) making a component tree of extremal regions’ evolution (enumeration), 2) obtaining region ...

Journal: :Vision Research 1995
S. J. Hamstra D. Regan

Using a dynamic random-noise display we measured orientation discrimination threshold for two kinds of cyclopean bar and for a cyclopean edge. Ocular vergence was monitored by means of nonious lines. Orientation discrimination threshold for a cyclopean bar or cyclopean edge fell to a minimum at some disparity between about 2 and 50 min arc. For the three subjects tested with bars, the minimum v...

Journal: :Investigative ophthalmology & visual science 2003
Robert F Hess Sam A Malin

PURPOSE The visual deficit in amblyopia involves both elevated contrast thresholds and distorted suprathreshold percepts at high spatial frequencies. It is currently unclear whether these two anomalies are part of the same neural disturbance or whether they reflect different neural dysfunction. METHODS The quality of the spatial percepts in amblyopia was assessed at detection threshold. The a...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1391

efl/esl textbooks have been regarded as essential language teaching materials with which the learners spend about 70 up to 90 percent of their class time. the important role they play and their vast use make them not only influential in learning the language but also in shaping values and attitudes. put it another way, textbooks socialize learners using their contents (i.e. texts, illustrations...

Journal: :Cochrane Database of Systematic Reviews 2010

Journal: :International journal of special education 2022

In many developing countries, orientation and mobility (O&M) services programs are inadequate. A survey of 296 visually impaired Nigerians was conducted in 2018 to assess availability of, experiences with, O&M training. Three-fourths those sampled were blind. items analyzed by vision status. Persons with partial sight more likely than blind persons use a cane without the assistance huma...

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