This package is an Overworld object perception module using the Pr2 pressure sensors.
We advise you to install all Overworld external perception modules in a same folder (e.g. overworld_modules) in your ROS workspace.
Here we assume Overworld to be installed.
sudo apt install ros-$ROS_DISTRO-pr2-common
cd ~/catkin_ws/src/overworld_modules
git clone https://github.com/sarthou/pr2_gripper_perception_module.git
cd ../..
catkin_make