Visually guided action relies on accurate perception of egocentric direction. Unfortunately, perceived direction easily becomes misaligned. How is this problem overcome? One theory (R. Held & S. J. Freedman, 1963) is that during self-movement the observer uses the relationship between anticipated and experienced sensory feedback as a source of information to maintain alignment. However, data su...

The current standard procedure for aligning thermal imagery with structure-from-motion (SfM) software uses GPS logger data for the initial image location. As input data, all thermal images of the flight are rescaled to cover the same dynamic scale range, but they are not corrected for changes in meteorological conditions during the flight. This standard procedure can give poor results, particul...

BACKGROUND This study analyzed the effect of preoperative T1 slope on cervical alignment and range of motion (ROM) after cervical disc arthroplasty (CDA) in patients with cervical degenerative disease. MATERIAL AND METHODS This retrospective study included 32 patients with single-level symptomatic cervical disc disease who underwent CDA with the Mobi-C cervical disc prosthesis and had a mean fo...

Moving animal groups such as schools of fish and flocks birds frequently switch between different group structures. Standard models collective motion have been used successfully to explain how stable form via local interactions individuals, but they are typically unable produce that exhibit spontaneous switching. We only aware one model, constructed for barred flagtail known rely on alignment a...

We present results from differential Global Positioning System (GPS) surveys of seven alignment arrays and four continuous GPS sites along the creeping segment of the San Andreas fault. Surveys of four alignment arrays from the central creeping segment yield 33to 36-year average minimum slip rates of 21–26 mm/yr. These rates are consistent with previous alignment array surveys spanning a 10-yea...

A supracondylar fracture occurred in a 48-year-old woman with rheumatoid arthritis and a total knee arthroplasty. The Rush pin technique required minimal surgical exposure and caused little disruption of surrounding soft tissue and blood supply. Soft tissues preserved inherent stability, allowing early range of motion and partial weight-bearing. Follow-up evaluation seven years later demonstrat...

We show the possibility of simultaneously aligning molecules and focusing their center-of-mass motion near a metal nanoparticle in the field intensity gradient created by the surface plasmon enhancement of incident light. The rotational motion is described quantum mechanically while the translation is treated classically. The effects of the nanoparticle shape on the alignment and focusing are e...

This paper introduces a hierarchical algorithm for the registration of corresponding images that do not necessarily have strong global similarity, such as multi-modal images, images with varying illumination (or specular reflection) and images with significant local motion. The method is based on the global maximization of an average local correlation measure, without the generation of similari...

We have employed a rapid (< 1⁄4 sec) spherical navigator echo (SNAV) to prospectively modify image acquisitions in serial MRI examinations. Detected motions using the faster helical-spiral SNAV and a computer-controlled phantom are now of comparable accuracy to previous results using a slower SNAV comprised of many circular trajectories. The faster SNAV also performs well in a pre-scan registra...

Image mosaicing is widely used in computer vision applications. In this paper, a new globally consistent image alignment method for video mosaicing is presented. Due to various uncertainties on noise, illumination, andmodeling, the problem of global image alignment is considered as a stochastic estimation problem. The augmented system state consists of the transformation parameters of video ima...