Heterogeneous object modeling based on multi-color distance field

Heterogeneous object modeling based on multi-color distance field
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基于多色距离场的异构对象建模

DOI:
10.1016/j.matdes.2008.07.002
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发表时间:
2009-04
期刊:
影响因子:
8.4
通讯作者:
--
中科院分区:
材料科学1区
文献类型:
--
作者:

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随着分层制造或快速成型技术的发展,对具有不同材料分布的异质物体进行建模变得越来越重要。与同质对象建模不同,异质对象建模不仅包含几何和拓扑信息,而且还包含材质信息。本文提出了一种新的异质对象建模方法。该方法首先用符号距离场表示物体的几何模型,然后为每个网格赋予材料属性,并根据材料特征计算出与几何距离场分辨率相同的材料距离场,然后将几何距离场和材料距离场统一起来,称为多色距离场。通过对多色距离场进行布尔运算,也可以得到复杂的异质目标。对于由距离场表示的异质物体,最显著的优点是它的几何模型和材料信息可以很容易地切片成一系列的2D层,从而便于使用分层制造设备来制造异质物体。几个例子说明了我们的建模方法的有效性。
With the development of layered manufacturing or rapid prototyping, modeling heterogeneous object with varying material distribution has become more and more important. Different from homogeneous object modeling, the heterogeneous object modeling contains not only geometry and topology information but also material information. In this paper, a new method of modeling heterogeneous object is presented. In this method, firstly, the geometric model of an object is represented by the signed distance field; next, each grid is assigned with material property and material distance field which has the same resolution with geometric distance field are calculated according to material feature; the geometric and material distance field are then unified, named as multi-color distance field. The complex heterogeneous object can also be obtained via the boolean operations of multi-color distance field. For a heterogeneous object represented by the distance field, the most significant advantage is that its geometry model and material information can easily be sliced into a series of 2D layers, so it is convenient for the heterogeneous object to be fabricated using layered manufacturing machine. Several examples show the validity of our modeling method.
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