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In this paper we introduce the Progressive Forest Split (PFS) representation , a new adaptive refinement scheme for storing and transmitting manifold triangular meshes in progressive and highly compressed form. As in the Progressive Mesh (PM) method of Hoppe, a triangular mesh is represented as a low resolution polygonal model followed by a sequence of(More)
manifold polygonal surface is such that the neighborhood of every vertex can be continuously deformed to a disk (to a half disk at the boundary). This corresponds to an intuitive "surface" definition, as opposed to an arbitrary collection of polygons. Topological degeneracies can occur by design choice (e.g., vertex merging to avoid duplicating coordinates,(More)
ÐMany real-world polygonal surfaces contain topological singularities that represent a challenge for processes such as simplification, compression, and smoothing. We present an algorithm that removes singularities from nonmanifold sets of polygons to create manifold (optionally oriented) polygonal surfaces. We identify singular vertices and edges, multiply(More)
We present a new method for (1) automatically generating multiple Levels Of Detail (LODs) of a polygonal surface, (2) progressively loading, or transmitting, and displaying a surface, and for (3) changing interactively the LOD when displaying. We build the LODs using any algorithm that performs edge collapses and certain vertex removals to simplify(More)
During August and September 1978, 3 1 current meters and 120 temperature sensors were deployed to record every 10 or 20 min at various depths at 12 moorings (with wind speed and direction at three moorings) in Lake Zurich. We explore here the baroclinic (internal seiche) response to wind impulses, observed as fluctuations in isotherm depth and current(More)
We demonstrate electro-optical tunable Bragg gratings embedded into complex two-dimensional waveguides in lithium niobate by femtosecond direct laser writing. The structures support both, ordinary and extraordinary guiding and narrowband reflections around λ = 1.55 μm.
Geometric models are often annotated to provide additional information during visualization. Maps may be marked with rivers, roads, or topographical information, and CAD data models may highlight the underlying mesh structure. While this additional information may be extremely useful, there is a rendering cost associated with it. Texture maps have often(More)
This study was designed to determine if providing wheat, corn, and rice as whole (WG) or refined grains (RG) under free-living conditions will change parameters of health over a six-week intervention in healthy, habitual non-WG consumers. Measurements of body composition, fecal microbiota, fasting blood glucose, total cholesterol, high density lipoprotein(More)