Abstract The determination of the three-dimensional (3D) geometry coronal features is important for understanding magnetic structuring solar atmosphere. In this context, length a loop, which subject to standing transverse oscillations, crucial parameter in seismology correct estimation phase speed wave and, consequently, Alfvén and magnetic-field strength. Simultaneous space-based observations ...

Various models for the representation of topological relations have been developed. The aim of this chapter is to propose a comprehensive view of state-of-the-art models for topological relations in spatial databases. A prominent role is assumed by the CBM (calculus-based method), which offers a small set of topological relations with high expressiveness and suitability to be embedded as operat...

Adults searched for a goal in images of a rectangular environment. The goal's position was constant relative to featural and geometric cues, but the absolute position changed across trials. Participants easily learned to use the featural cues to find the target, but learning to use only geometric information was difficult. Transformation tests revealed that participants used the color and shape...

As everyone can browse high-resolution satellite image and e-map products on the Internet freely, such as the GoogleTM Maps (image mosaics and e-maps) since 2005, some significant mapping defects, such as misalignment of image tiles and imperfect registration of images and e-maps, have been identified. This paper is aimed at study of geometric characteristics of the web image mosaics that have ...

1. Abstract Topology optimization yields an overall layout of a structure in the form of discrete density (e.g., SIMP) or continuous boundary geometry (e.g., level-set method). One of important drawbacks, however, is that it leads to a geometry with zigzag boundaries and/or irregular shapes, which is difficult to be interpreted for manufacturability, as well as to be utilized in subsequent appl...

An object with certain geometric features, when it is in contact with another object, may cause disjoint regions of contact conngurations under the same topolog-ical contact formation (CF). In this paper we analyze such geometric features and introduce the concept of Limiting Channel Element of CF-Compliance (LIMI-TEL). We further develop a simple algorithm for nd-ing potential LIMITELs of an a...

We introduce two fourth-order regularization methods that remove geometric noise without destroying significant geometric features. These methods leverage ideas from image denoising and simplification of high contrast images in which piecewise affine functions are preserved up to infinitesimally small transition zones. We combine the regularization techniques with active contour models and appl...