This paper presents a system enabling a mobile robot to autonomously pick-up objects
a human is pointing at from the floor. The system does not require object models and
is designed to grasp unknown objects. The robot decides by itself if an object is
suitable for grasping by considering measures of size, position and the environment
suitability. The implementation is built on the second prototype of the home care
robot Hobbit, thereby verifying that complex robotic manipulation tasks can be performed
with economical hardware. The presented system was already tested in real apartments
with elderly people. We highlight this by discussing the additional complexity for
complete autonomous behavior in apartments compared with tests in labs.
