### Finding a rectangle in a hay stack: identifying an object in a #PointCloud

Once a plane is located in a point cloud, some #VirtualReality / #AugmentedReality applications need to know the extent of the planar surface. Here I describe a method to determine the rectangular boundaries of the plane. The point cloud is assumed to be sufficiently dense and points on the plane appear as a relatively flat, … Continue reading

### Using Principal Components Analysis to determine the best fitting plane from locations in a #PointCloud

3-d scanners determine locations of points on surfaces thereby creating a point cloud in 3 dimensional space. This point cloud is used to determine the surface of objects scanned with the total set determining a mesh that can be printed or used in #VirtualReality / #AugmentedReality applications. Some applications such as shooter games need to … Continue reading

### How to plot a table of values in R

Displaying a table of values in a plot is often a useful supplement to the graphs presented. In addition, plotted tables can be output as png or pdf files. The following is a table plotted to a png file using R. Plotting is done by Creating a blank plotting surface with coordinates for placing the … Continue reading