Merge pull request #2726 from iory/invert-mask-image #578

Job	Run time
ros (indigo, true, true, true, ros-ubuntu:14.04-pcl, sudo pip install numpy==1.16.6; sudo pip ins...	2h 41m 1s
ros (kinetic, true, true, true, ros-ubuntu:16.04-pcl, sudo pip install numpy==1.16.6; sudo pip in...	1h 48m 7s
ros (kinetic, true, true, true, ros-ubuntu:16.04-pcl, sudo pip install numpy==1.16.6; sudo pip in...	1h 54m 50s
ros (melodic, true, true, true, ros-ubuntu:18.04-pcl, sudo pip install numpy==1.16.6; sudo pip in...	3h 3m 10s
ros (melodic, true, true, true, ros-ubuntu:18.04-pcl, sudo pip install numpy==1.16.6; sudo pip in...	3h 2m 52s
ros (melodic, true, true, true, ros-ubuntu:18.04-pcl, sudo pip uninstall -y fcn chainer chainercv...	3h 4m 39s
ros (noetic, false, true, true, ros-ubuntu:20.04-pcl, sudo pip3 install numpy==1.17.5 scipy==1.3....	3h 1m 44s
ros (noetic, false, true, true, ros-ubuntu:20.04-pcl, jsk_pcl_ros_utils jsk_pcl_ros, sudo pip3 in...	3h 2m 39s
ros (noetic, false, true, true, ros-ubuntu:20.04-pcl, jsk_recognition_msgs, sudo pip3 install num...	3h 1m 42s
	1d 0h 40m 44s

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