The facial skin was segmented from the craniofacial CT image, and the.ply/.stl file was obtained for registration with the actual face point cloud collected by the depth camera.
In the Segmentation module Representations of Slicer 4.11, there are only three options: Binary labelmap,Closed surface and Fractional labelmap. Figure 1(but I see in the Slicer document Image Segmentation section that there are also Planar contour and Ribbon model options, Figure 2). When I exported the skin Segment, since Slicer automatically selected Closed surface, the generated model was layered, as shown in Figure 3. This stratification creates two similar-shaped face point clouds in the point cloud, which can affect registration.
When the MarchingCube algorithm of VS+VTK was used for skin contour surface extraction of CT images, it was found that the obtained point cloud only had one layer, as shown in FIG. 4(what I hope to obtain is similar to the point cloud obtained by depth camera). Therefore, I hope that in Slicer, MarchingCube is also used to export the single-layer isosurface model file for the segmtioned skin Segment. However, I have never found the implementation method of MarchingCube in Slicer.
I hope some friends can give me some suggestions. Is there something wrong with my Slicer version, which lacks Planar contour and Ribbon model? And is there a way to call MarchingCube in Slicer to extract isosurfaces for the skin Segment?