Depth from binocular disparity and motion parallax has traditionally been assumed to be the product of separate and independent processes. We report two experiments which used classical psychophysical paradigms to test this assumption. The first tested whether there was an elevation in the thresholds for detecting the 3D structure of corrugated surfaces defined by either binocular disparity or ...

Motion parallax, or differential retinal image motion from observer movement, provides important information for depth perception. We previously measured the contribution of shear motion parallax to depth, which is only composed of relative motion information. Here, we examine the roles of relative motion and accretion-deletion information in dynamic occlusion motion parallax. Observers perform...

Depth from binocular disparity and motion parallax has traditionally been assumed to be the product of separate and independent processes. We report two experiments which used classical psychophysical paradigms to test this assumption. The first tested whether there was an elevation in the thresholds for detecting the 3D structure of corrugated surfaces defined by either binocular disparity or ...

We present a geometric relationship between the image motion of pairs of points over multiple frames This relationship is based on the parallax displacements of points with respect to an arbitrary planar surface and does not involve epipolar geometry A constraint is derived over two frames for any pair of points relating their projective structure with respect to the plane based only on their i...

Several examples of insects using visual motion to measure distance have been documented, from locusts peering to gauge the proximity of prey, to honeybees performing visual odometry en route between the hive and a flower patch. However, whether the use of parallax information is confined to specialised behaviours like these or represents a more general purpose sensory capability, is an open qu...

Image registration is a fundamental task in computer vision and it significantly contributes to high-level computer vision and benefits numerous practical applications. Although many image registration techniques have been proposed in the past, there is still a need for further research because many issues such as the parallax problem remain to be solved. The traditional image registration algo...

The perception of depth from relative motion is believed to be a slow process that "builds-up" over a period of observation. However, in the case of motion parallax, the potential accuracy of the depth estimate suffers as the observer translates during the viewing period. Our recent quantitative model for the perception of depth from motion parallax proposes that relative object depth (d) can b...

The determinants of visual scale (size a d distance) under monocular viewing are still largely unknoyh. The problem of visual scale under monocular viewing becomes readily apparent when one moves about within a virtual environment. It might be thought that the absolute motion parallax of stationary objects (both in real and virtual environments), under the assumption of their stationarity, woul...

We attempt to identify all microlensing parallax events for which the parallax fit improves ∆χ > 100 relative to a standard microlensing model. We outline a procedure to identify three types of discrete degeneracies (including a new one that we dub the “ecliptic degeneracy”) and find many new degenerate solutions in 16 previously published and 6 unpublished events. Only four events have one uni...

Interferometric length measurements without parallax error, based on the phenomenon of the reproducible wringing, are demonstrated. Using reproducible wringing together with the slave-block technique, accuracy level below 1 nm can be obtained for blocks of a few mm length with small flatness deviation. Phase change correction determination with sub-nm uncertainty is achieved for blocks up to 10...