Journal of Behavioral Optometry Abstract Introduction: One factor in the evaluation of binocular vision is the measurement of stereopsis. Several methods are available for this purpose. The most common procedures are anaglyphic (with use of red-green filters) and vectographic (with use of polarized filters) procedures. The purpose of this study is the determination of stereopsis with local (Tit...

This paper propose a new image enhancement algorithm using color stereopsis between red and blue colors and also shows it’s advantages over depth darkening algorithm. Color stereopsis is a phenomenon in the human visual system (HVS) in which a long wavelength color is perceived as being located closer than a short wavelength color. Although many psychophysical studies on color stereopsis have b...

angle was relevant to the preservation of position and motion stereopsis, but not to visual acuity. Therefore, amblyopia is at least irrelevant to preservation of the crude position stereopsis tested with a disparity of0.5°. After all, all of the points in Dr. Romano's argument come either from inappropriate adherence to the definition of strabismus, which is irrelevant to the main points of ou...

Purpose To evaluate the relationship between uncorrected visual acuity and refraction and binocular function using a vision screening protocol. Methods In total, 760 children (3-6 years old) who were enrolled in 4 nursery schools in Otawara, Japan, were recruited; a total of 1,520 eyes were examined. We assessed uncorrected near visual acuity, manifest refraction, stereopsis, and eye position...

The spatial and temporal organization of stereoscopic depth perception were compared in normal and strabismic observers. The minimum and maximum disparities for stimulating static and dynamic stereopsis in strabismus were examined as a function of spatial separation of disparate stimuli. Disparities and their spacing were produced by spatial modulation of two vertical lines viewed haploscopical...

Most people strongly prefer to use back-and-forth eye movements in order to discriminate 3-dimensional distances among targets that are widely separated from each other in direction. This viewing strategy permits sequential stereopsis: a comparison between the foveally-seen pre-saccadic disparity of one target with post-saccadic disparity of the other. This note describes a simple and qualitati...

Human observers with deficient foveal stereopsis often show characteristic abnormalities of monocular optokinetic nystagmus (OKN). The present study examined the effect of binocular interactions in the peripheral visual field on these OKN deficits. A variety of binocular functions (binocular acuity summation, interocular suppression, motion-in-depth) were assessed at various positions throughou...

An accurate perception of the distance between an object and a nearby surface can increase a viewer’s sense of presence in an immersive environment, particularly when a user is performing actions that affect or are affected by this distance. Two experiments were conducted examining the effectiveness of stereopsis, shadows, and interreflections at conveying this distance information. Subjects pe...

We review work on image-based 3D modelling. 3D modelling entails the availability of complete 3D coordinates, and yet obtaining the coordinates is one of the most difficult tasks. Resorting to using 2D images appears a promising means to achieve this task and has been much reported. Prevalent methods are the shape from shading, photometry, stereopsis, photogrammetry and the video approach. Shap...