将 3D 轮廓点转换为 3D 二进制体积

Question

I have a set of 3D contour points that represent a closed surface, such as the following:

The contour slices are closed curves, and are always located at integer z values. Although, there are some z values in the middle that don't have contours.

In MATLAB, I want to convert this point representation to a binary volume representation, where pixels that lie inside of the contour shape are considered as 1, and pixels outside as 0.

I tried 3D triangulation and then converting the triangulated polygon to a binary volume. Although, the triangulation doesn't respect the boundary limits that are imposed by the closed curves on each slice. That is, the intra-slice points are connected indiscriminately and some round features are lost.

How can I solve this problem?

Answer 1

我会检查Marching Cubes和Ball Pivoting以进行 3D 三角测量。

Answer 2

通过在Meshlab 中使用 Ball Pivoting过滤，我能够获得我想要的三角剖分。