In remote sensing, many target objects have highly irregular appearance. Especially natural objects — such as clouds, isotherms and curves of terrain elevation — are typically irregular in both shape and structure. This paper explains how irregular natural objects can be modelled and processed efficiently as attribute trees. First, we present a technique for extracting image topology and shape ...

Several “distances” between the spectra of two regular matrix pencils are discussed and compared. The relations obtained enable us to estimate upper bounds on one “distance” via known upper bounds on others. We also give some perturbation bounds and then show how to apply the relations obtained in this note.

A multilinear approach based on Grassmann representatives and matrix compounds is presented for the identification of reducing pairs of subspaces that are common to two or more matrices. Similar methods are employed to characterize the deflating pairs of subspaces for a regular matrix pencil A+ sB, namely, pairs of subspaces (L,M) such that AL ⊆ M and BL ⊆ M.

Octree Splitting We extend the irregular pyramid segmentation scheme to three dimensional (3D) digital space and we call it hyper-irregular pyramid segmentation. Based on this segmentation scheme, a 3D texture image is split into partitions recursively based on octree structure. The testure features are calculated based on 3D gray level spatial dependency measurement. The octree is subsequently...

Rubidium ytterbium(III) tetra-kis-(polyphosphate), RbYb(PO3)4, was synthesized by solid-state reaction. It adopts structure type IV of the MRE(PO3)4 (M = alkali metal and RE = rare earth metal) family of compounds. The structure is composed of a three-dimensional framework made up from double spiral polyphosphate chains parallel to [10-1] and irregular [YbO8] polyhedra. There are eight PO4 tetr...

The contrast between regular and irregular inflectional morphology has been useful in investigating the functional and neural architecture of language. However, most studies have examined the regular/irregular distinction in non-agglutinative Indo-European languages (primarily English) with relatively simple morphology. Additionally, the majority of research has focused on verbal rather than no...

We present a simple method for improving the rendered appearance of coarse triangular meshes. We refine and modify the geometry along silhouette edges in real-time, and thus increase the geometric complexity only where needed. We address how to define the improved silhouette and a method to blend the modified and the original geometry continuously. §

Irregular Incurve is a MIDI controllable robotic string instrument. The twelve independent string-units compose the complete musical scale of 12 units. Each string can be plucked by a motor control guitar pick. A MIDI keyboard is attached to the instrument and serves as an interface for real-time interactions between the instrument and the audience. Irregular Incurve can also play preprogrammed...

Non-rigid shape matching is one of the most challenging fields in content-based 3D object retrieval. The aim of the SHREC 2010 Shape Retrieval Contest of Non-rigid 3D Models is to evaluate and compare the effectiveness of different methods run on a non-rigid 3D shape benchmark consisting of 200 watertight triangular meshes. Three groups with six methods have participated in this track and the r...