Stereoscopic vision relies mainly on relative depth differences between objects rather than on their absolute distance in depth from where the eyes fixate. However, relative disparities are computed from absolute disparities, and it is not known where these two stages are represented in the human brain. Using functional MRI (fMRI), we assessed absolute and relative disparity selectivity with st...

We examined the effects of vertical-disparity gradients on apparent depth curvature of textured surfaces. In Experiment 1, vertical disparities induced expected curvatures when the surface had a horizontal disparity of < +/-40.34'. A central row of elements, lacking vertical disparities, ceased to have the same apparent curvature as the surface when the horizontal disparity between row and surf...

Group recommendation has attracted significant research efforts for its importance in benefiting a group of users, however, seldom investigation has been put into the essential problem of how the groups should be formed. This paper investigates the disparity-aware group formation problem in group recommendation. In this work, we present a formulation of the disparity-aware group formation probl...

Binocular disparity is one of many clues to perceive depth. Random-dot stereograms (RDS) designed by Julesz [1] enables us to make visual stimuli that exclusively have binocular disparity as a depth clue. Many physiological studies were done about visual cortical neurons which respond to binocular disparity [2], but it is still not clear what large-scale activity of such neurons detects corresp...

22 Segmentation of the visual scene into relevant object components is a 23 fundamental process for successfully interacting with our surroundings. Many visual 24 cues, including motion and binocular disparity, support segmentation, yet the 25 mechanisms utilizing these cues are unclear. We used a psychophysical motion 26 discrimination task in which noise dots were displaced in depth to invest...

Leg Equalization by Epiphyseal Arrest 1952-1970 Mr. J. G. H. James (Cardiff and Neath) reviewed a personal series of 246 cases of leg disparity: 114 had been followed to maturity and 67 cases of epiphyseal stapling were analysed in detail. The intention was to staple one or both epiphyses under direct vision with accurate placement of the posterior femoral and lateral tibial staples particularl...

This paper presents an architecture for computing vector disparity for active vision systems as used on robotics applications. The control of the vergence angle of a binocular system allows us to efficiently explore dynamic environments, but requires a generalization of the disparity computation with respect to a static camera setup, where the disparity is strictly 1-D after the image rectifica...

Distributed constraint optimization imposes considerable complexity in agents’ coordinated search for an optimal solution. However, in many application domains, problems often exhibit special structures that can be exploited to facilitate more efficient problem solving. One of the most recurrent structures involves disparity among subpmblems. We present a coordination mechanism, Anchor&Ascend, ...

The accuracy of depth judgments that are based on binocular disparity or structure from motion (motion parallax and object rotation) was studied in 3 experiments. In Experiment 1, depth judgments were recorded for computer simulations of cones specified by binocular disparity, motion parallax, or stereokinesis. In Experiment 2, judgments were recorded for real cones in a structured environment,...