Abstract
AbstractThis work describes several improvements over the technique known as atomic meshes introduced by Hale (Tenth International Meshing Roundtable, Newport Beach, CA, 2001), which aims at producing numerical meshes from image data ‘directly’, i.e. bypassing any image segmentation step. We propose two modifications to Hale's original idea: (1) a procedure whereby atoms are initially projected onto perceived features, and (2) the introduction of a Laplacian component to the formulation of the energy field governing atom movement. These aim at improving the adaptation of the mesh to the image while producing better‐shaped triangles. True to Hale's idea, no image segmentation is ever tried, but since the atom placement and movement criteria are more sensitive to image borders, experiments indicate that the resulting meshes tend to conform more closely to the image features. Copyright © 2007 John Wiley & Sons, Ltd.
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