Robot Operating System Cookbook

MoveIt! collision checking

The CollisionWorld object inside MoveIt! is used to find collisions inside a planning scene, which are using the Flexible Collision Library (FCL) package as a backend. MoveIt! supports collision checking for different types of objects, such as meshes; primitive shapes such as boxes, cylinders, cones, spheres, and so on; and Octomap.

Collision checking is one of the most computationally expensive tasks during motion planning. To reduce this computation, MoveIt! provides a matrix called Allowed Collision Matrix (ACM). It contains a binary value corresponding to the need to check for collisions between two pairs of bodies. If the value of the matrix is 1, it means that the collision of the corresponding pair is not ...