Polygon, subdivision, and NURBS are three mainstream modeling techniques widely applied in commercial software packages. They require heavy manual operations, involve a lot of design variables leading to big data, high storage costs slow network transmissions. In this paper, we integrate the strengths boundary-based surface creation partial differential equation (PDE)-based geometric obtain fir...

A method is described for representing and manipulating a hierarchy of surface editing operations, in the context of an interactive shape modeling tool. Surface deformations are cast as dynamic geometric textures, applied to locally-parameterized regions of the surface which can be interactively manipulated, and also layered. This use of dynamically layered deformation is characterized as “surf...

 Background: Bromide is found naturally in groundwater and surface water. The rapid growth of industrial activities, drainage of surface runoff, and use of methyl bromide in pesticides has increased bromide discharge to the environment. Disinfection of water-containing bromide causes the creation of additional products of organo-halogenated that are considered cancer-causing agents. In...

This paper presents data structures that enable interactive editing of large-scale level-set surface models. The new approach utilizes spatial hashing to store a narrow band of voxels around the levelset interface, as well as a k-d tree to hold the model’s display points that lie on the surface itself. This sparse representation of voxels and surface points lets us create and modify high resolu...

We consider tasks that require users to be aware of the proximity of two 3D surfaces and where one or both of these surfaces is changing over time. We consider situations where users need to quickly and accurately assess when and where the two surfaces approach each other and eventually intersect. Because occlusion in 3D visualisations remains an issue in the perception of such data, a complete...

Live Surface allows users to segment and render complex surfaces from 3D image volumes at interactive (sub-second) rates using a novel, cascading graph cut (CGC). Live Surface consists of two phases. (1) Preprocessing for generation of a complete 3D hierarchy of tobogganed regions followed by tracking of all region surfaces. (2) User interaction in which, with each mouse movement, the volume is...