Several approaches of motion segmentation were published in the last years, but an evaluation of these different approaches is missing up to now. Here we evaluate different methods of motion segmentation to optimize our motion estimation system [5] based on a n:m matching of color regions. We compare four different neighborhood checking methods and three different motion similarity tests in com...

Ground-motion prediction (attenuation) models predict the probability distributions of spectral acceleration values for a specified earthquake event. These models provide only marginal distributions, however; they do not specify correlations among spectral accelerations with differing periods or orientations. In this article a large number of strong ground motions are used to empirically estima...

Dynamic contrast-enhanced MRI of the breast (DCE-MRI) is widely used for detection and quantification purposes of breast cancer. The particular acquisition procedure of DCE-MRI over time leads to motion artifacts which distort analysis results. In this work we examine two criteria for a segmentation approach to separate areas affected by motion artifacts from properly perfused regions. By appli...

Motion segmentation is currently an active area of research in computer Vision. The task of comparing different methods of motion segmentation is complicated by the fact that researchers may use subtly different definitions of the problem. Questions such as ”Which objects are moving?”, ”What is background?”, and ”How can we use motion of the camera to segment objects, whether they are static or...

Ground motion may be a limiting factor in the performance of future linear colliders. Cultural noise sources, an important component of ground motion, are discussed here, with data from the SLD region at SLAC.

The regional variability in earthquake ground-motion amplitudes for a given magnitude and distance in western North American environments was examined using ShakeMap data from small-to-moderate events. The abundance of data for small-tomoderate events in California allows average ground-motion levels, as a function of magnitude and distance, to be resolved with a high level of confidence. Groun...

Abstract. Monitoring ground deformation at national and regional level with millimetre-scale precision, nowadays, is possible by using Advanced Differential Interferometric SAR (A-DInSAR) techniques. This study concerns the results of European Ground Motion Service (EGMS), part Copernicus Land Service, which detects measures land displacement scale. provides reliable consistent information rega...

We prove that the ground state eigenfunction for symmetric stable processes of order α ∈ (0, 2) killed upon leaving the interval (−1, 1) is concave on (− 1 2 , 1 2 ). We call this property “mid– concavity.” A similar statement holds for rectangles in R, d > 1. These result follow from similar results for finite dimensional distributions of Brownian motion and subordination.

Many animals rely on visual figure-ground discrimination to aid in navigation, and to draw attention to salient features like conspecifics or predators. Even figures that are similar in pattern and luminance to the visual surroundings can be distinguished by the optical disparity generated by their relative motion against the ground, and yet the neural mechanisms underlying these visual discrim...