Algorithm that converts point cloud data into an occupancy grid
Freshman summer research project into the use of normal vectors to generate an occupancy grid based off of point cloud data.
I wouldn't recommend using this package. I developed this Freshman year of college while learning C++. While it kind of works, I never finished the implementation and it's very computationally intensive.
If you're looking for something that'll take in a point cloud and give you an occupancy grid, check out http://wiki.ros.org/costmap_2d.