When the head is unrestrained, the large amplitude gaze shifts are composed of coordinated eye and head movements. The position of the eyes at the onset of the gaze shift can alter the eye and head contributions to the movement. The movements of the eyes and head during the unrestrained-head gaze shift follow well-defined relationships. It is possible to predict the displacement of the eye and ...

Needle insertion is a minimally invasive technique in diagnosing and treating tumors. However, to perform a surgery accurately, the tissue should have minimum amount of displacement during needle insertion so that it reaches the target tissue. Therefore, the tissue membrane has to move less to decrease rupturing under the membrane. In this study, the effect of different design parameters on dis...

The present paper presents a new method to solve fluid structure interaction problem. Our computational method is based on controllability approach. Given a target structural displacement we will find a control d u  steering the displacement of the structure u to . We need to define a payoff functional (J): d u     2 2 1 d 2 u d u J u u c       where u solves the structure equation ...

The finest stereoacuity is known to depend on the disparity of a target relative to other visible points. Here we show that a more important factor in determining sensitivity to displacement can be the disparity of a target relative to an invisible interpolation plane through other neighboring points. We tested the sensitivity of observers to displacements of the central column of a regular gri...

We introduce P2P-NET, a general-purpose deep neural network which learns geometric transformations between point-based shape representations from two domains, e.g., meso-skeletons and surfaces, partial and complete scans, etc. The architecture of the P2P-NET is that of a bi-directional point displacement network, which transforms a source point set to a target point set with the same cardinalit...

PURPOSE Surgical clips are used as a target for postoperative breast radiotherapy, and displacement of surgical clips would result in inaccurate delivery of radiation. We investigated the displacement range of surgical clips in the breast during postoperative radiotherapy following breast-conserving surgery. METHODS A total of 178 patients who received breast-conserving surgery and postoperat...

Precise feature matching is the key technical issue for image registration, moving target tracking and speed measurement, and assessment of changes in environment for UV operation. Fast, accurate and robust functions for image feature matching and comparison formulate the core of machine vision. The recent development of phase correlation method has shown that the technique is capable of measur...

Visual tracking of moving objects requires prediction to compensate for visual delays and minimize mismatches between eye and target position and velocity. In everyday life, objects often disappear behind an occluder, and prediction is required to align eye and target at reappearance. Earlier studies investigating eye motion during target blanking showed that eye velocity first decayed after di...

PURPOSE Intrafraction motion during step-and-shoot (SNS) IMRT is known to affect the target dosimetry by a combination of dose blurring and interplay effects. These effects are typically managed by adding a margin around the target. A quantitative analysis was performed, assessing the relationship between target motion, margin size, and target dosimetry with the goal of introducing new margin r...

The Laboratory for Laser Energetics (LLE) houses the OMEGA 60-beam laser, which is used to carry out inertial confinement fusion (ICF) experiments. The 60 beams delivered by the laser are all focused on a fusion target that is less than a millimeter in diameter. To properly carry out an ICF experiment, the target has to be uniformly irradiated by all 60 of the laser beams. Target vibrations are...