L3DB6H

Lloyd Bosworth : archaeologist | human | beard

Posts in the MeshLab category

From VisualSFM to MeshLab

VirtualSFM point cloud before cleaning.So you’ve created a dense point cloud with vertex colour in VisualSFM, (or any other software), and now you want to convert this into a textured 3D model. How do you do that? With MeshLab, creating textured meshes from point clouds is a straightforward process. This quick tutorial will show you how.

There are three steps in the workflow:

  1. Edit the high resolution VisualSFM colour point cloud
  2. Create a 3D model from the high resolution point cloud
  3. Transfer the colour attributes from the point cloud to the mesh

(more…)

Why a 3D Topographic Model?

dem created in arcgis from contour dataI’ve been asked to produce a walk-through animation of a reconstructed archaeological site that shows the landscape setting of important buildings, and how these buildings constrained the movement of people. Reconstructing the buildings is pretty simple, with lots of reference material available. However, the 3D topographical model of the landscape is much trickier, made worse by not having any digital elevation data, only paper maps with contours.

Drawing contours with height attributes is easy in ArcGIS, but when I was asked to create an animation, I had no idea how to get the GIS shapefile data into my 3d software for animating. I figured there must be a way, and sure enough, ArcGIS has all the tools for converting and exporting a shapefile that can then be opened in pretty much any 3d software package.
(more…)