نتایج جستجو برای: 1 disparity

تعداد نتایج: 2765422  

Journal: :Academic medicine : journal of the Association of American Medical Colleges 2012
Monica E Peek Shannon C Wilson Jada Bussey-Jones Monica Lypson Kristina Cordasco Elizabeth A Jacobs Cedric Bright Arleen F Brown

PURPOSE To characterize national physician organizations' efforts to reduce health disparities and identify organizational characteristics associated with such efforts. METHOD This cross-sectional study was conducted between September 2009 and June 2010. The authors used two-sample t tests and chi-square tests to compare the proportion of organizations with disparity-reducing activities betwe...

2010
Shimon Edelman

Schemes for the extraction of qualitative shape information from stereo tend to relegate the solution of the correspondence problem to a preprocessing stage and to assume that their input is provided in the form of a matched image pair { a disparity map [1]. The disparity map is a rich source of shape information, which allows the recovery of depth on a ratio scale [2] even when the camera geom...

Journal: :Archives of Dermatology 2009

Journal: :JAIDS Journal of Acquired Immune Deficiency Syndromes 2013

Journal: :Investigative ophthalmology & visual science 1979
J L Semmlow G Hung

Traditional measurements of fixation disparity, like other binocular measurements, confound influences from both blur-driven and disparity-driven components. Measuring fixation disparity with accommodation open-loop eliminates accommodative interactions, and results show fixation disparity is reduced to about half the value observed normally for high levels of forced vergence. Thus fixation dis...

Journal: :Current Biology 2010
Zhi-Lei Zhang Christopher R.L. Cantor Clifton M. Schor

When an object is viewed binocularly, unequal perspective projections of the two eyes' half images (binocular disparity) provide a cue for the sensation of stereo depth. For almost 200 years, binocular disparity has remained synonymous with retinal disparity, which is computed by subtracting the distance of each half image from its respective fovea. However, binocular disparity could also be co...

Journal: :Journal of neurophysiology 2000
T Uka H Tanaka K Yoshiyama M Kato I Fujita

The inferior temporal cortex (IT) of the monkey, a final stage in the ventral visual pathway, has been known to process information on two-dimensional (2-D) shape, color, and texture. On the other hand, the dorsal visual pathway leading to the posterior parietal cortex has been known to process information on location in space. Likewise, neurons selective for binocular disparity, which convey i...

2007
Jarno Ralli Francisco J. Pelayo Javier Díaz

In this paper a trade-off between the computation effort and the accuracy of the resulting disparity map, obtained using interpolation over spatial domain, is presented. The accuracy of the obtained disparity map is presented as the mean squared error calculated over the known disparity ground truth of test images, while efficiency increase is presented in terms of algorithm run-times. Even whe...

2010
Thomas Krauß Peter Reinartz

In this paper we describe a new approach for the extraction of urban objects from very high resolution (VHR) optical stereo satellite imagery. Such data is delivered from sensors like Ikonos, QuickBird, GeoEye or WorldView-II. These sensors provide ground sampling distances (GSD) of 0.5 to 1 m for the pan chromatic channel and 2 to 4 m for the multispectral channels. Normally good digital surfa...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2017
Anthony M Norcia Holly E Gerhard Wesley J Meredith

Stereopsis is the primary cue underlying our ability to make fine depth judgments. In adults, depth discriminations are supported largely by relative rather than absolute binocular disparity, and depth is perceived primarily for horizontal rather than vertical disparities. Although human infants begin to exhibit disparity-specific responses between 3 and 5 months of age, it is not known how rel...

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