This ROS package is forked on erlerobot.
Add this folder to catkin_ws/src and the compile the code:
cd <your catkin_worspace>
catkin_make
To do this copy the 'pixy.rules' file to '/etc/udev/rules.d'
sudo cp pixy.rules /etc/udev/rules.d/
Whit this component you can see the image from Pixy Cam.
roslaunch pixy_node pixy_usb.launch