Automatic 3D ASM Construction via Atlas-Based Landmarking and Volumetric Elastic Registration
Automatic 3D ASM Construction via Atlas-Based Landmarking and Volumetric Elastic Registration
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通过基于图集的地标和体积弹性配准自动 3D ASM 构建
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
W. Niessen
中科院分区：
文献类型：
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作者：
Alejandro F Frangi;D. Rueckert;J. Schnabel;W. Niessen
引入了一种新颖的方法，可以生成三维形状的地标并构建相应的 3D 活动形状模型 (ASM)。对一类形状中的一组示例进行地标标记是通过以下方式实现的：（i）构建该类的图集，（ii）从图集中自动提取地标，以及（iii）随后通过体积弹性变形过程将这些地标传播到每个示例形状。本文详细描述了图集的生成方法，以及地标提取和传播过程。与之前发布的方法相比，该技术具有一些优势：它可以处理多部分结构，并且对结构拓扑的限制性假设较少。通过两个例子证明了所开发技术的适用性：CT 骨骼数据和 MR 脑数据。
A novel method is introduced that allows for the generation of landmarks for three-dimensional shapes and the construction of the corresponding 3D Active Shape Models (ASM). Landmarking of a set of examples from a class of shapes is achieved by (i) construction of an atlas of the class, (ii) automatic extraction of the landmarks from the atlas, and (iii) subsequent propagation of these landmarks to each example shape via a volumetric elastic deformation procedure. This paper describes in detail the method to generate the atlas, and the landmark extraction and propagation procedures. This technique presents some advantages over previously published methods: it can treat multiple-part structures, and it requires less restrictive assumptions on the structure's topology. The applicability of the developed technique is demonstrated with two examples: CT bone data and MR brain data.