1. Graduate School of Engineering Science, Osaka University, Toyonaka, Japan
2. Robotics Group, OMRON SINIC X Corp., Tokyo, Japan
3. Intelligent System Research Center Technology and Intellectual Property H.Q., OMRON Corp., Kyoto, Japan
4. Sensing Technology Research Center, National Inst. of Advanced Industrial Science and Technology (AIST), Tokyo, Japan
5. SenseTime Japan Ltd., Kyoto, Japan
6. Laboro.ai, Tokyo, Japan
7. Artificial Intelligence Research Center, Technology and Intellectual Property H.Q., Tokyo, Japan