Iso - surface Extraction in 4 D withApplications related to Scale
نویسنده
چکیده
We present a method for extracting iso-surfaces and their intersections in 4D. Our work is a signiicant extension of the 3D Marching Lines algorithm with new orientation and implementation considerations. As a practical tool, it can be applied to track eeciently space curves, de-ned by diierential invariants, across increasing scale.
منابع مشابه
Iso-surface extraction in 4D with applications related to scale space
We present a method for extracting iso-surfaces and their intersections in 4D. Our work is a signiicant extension of the 3D Marching Lines algorithm with new orientation and implementation considerations. As a practical tool, it can be applied to track eeciently space curves, deened by diierential invariants, across increasing scale. Extraction d'iso-surfaces en 4D avec des applications la thho...
متن کاملOn the non-local geometry of turbulence
A multi-scale methodology for the study of the non-local geometry of eddy structures in turbulence is developed. Starting from a given three-dimensional field, this consists of three main steps: extraction, characterization and classification of structures. The extraction step is done in two stages. First, a multi-scale decomposition based on the curvelet transform is applied to the full three-...
متن کاملSweeping Simplices: A Fast Iso-Surface Extraction Algorithm for Unstructured Grids
We present an algorithm that accelerates the extraction of iso-surfaces from unstructured grids by avoiding the traversal of the entire set of cells in the volume. The algorithm consists of a sweep algorithm and a data decomposition scheme. The sweep algorithm in-crementally locates intersected elements, and the data decomposition scheme restricts the algorithm's worst-case performance. For dat...
متن کاملTwo Methods for Iso-surface Extraction from Volumetric Data and Their Comparison
There are various methods for extracting iso-surfaces from volumetric data. Marching cubes or tetrahedra or raytracing methods are mostly used. There are many specific techniques to increase speed of computation and decrease memory requirements. Although a precision of iso-surface extraction is very important, too, it is not mentioned usually. A comparison of the selected methods was made in di...
متن کاملA New Seed-Set Finding Approach for Iso-Surface Extraction
Iso-surface extraction is one of the most important approaches for volume rendering, and iso-contouring is one of the most effective methods for iso-surface extraction. Unlike most other methods having their search domain be the whole dataset, iso-contouring does its search only on a relatively small subset of the original dataset. This subset, called a seed-set, has the property that every iso...
متن کامل