At the beginning of this paper we give a brief description about the evaluation criteria about the quality of the mesh,then we give a concise introduction about the classical mesh generation technology,subsequently we give a quite thorough statement about the Remeshing method according to their purpose,and at last introduced a new optimizing algorithm by this paper.

Several topics are researched in the thesis, such as subdivision method, mesh simplification and optimization, remeshing, surface reconstruction, reconstruction result analysis,system development and so on.

Finally,a resampling strategy combining Loop subdivision and Laplacian smoothing is introduced to enhance the quality of remeshing results.

The sampling den-sity compensation in the current gridding reconstruction is accomplished through the convolution of non-Cartesian data,which re-quires calculating a large number of distances between each other non-Cartesian positions when the number of data is large such as PROPELLER.

Spherical Parameterization and Remeshing in Digital Geometry Processing

To overcome these shortcomings,a brick element re-meshing technique is presented for hot finish-rolling process simulation,the finish-rolling of typical type H250×125×6×9 is analyzed by the proposed nu- merical anal.

In order to analyze the whole process,a brick-element re-meshing and data mapping technique was presented for simulating the shape-metal rolling and similar process,in which the explicit time integration was selected to analyze the transient roll-pass proces.

A brick element re-meshing technique was presented for shape-metal rolling process.