the CCNY Robotics Lab Electrical Engineering Department City College of New York NY 10031 USAthe University of Chinese Academy of Sciences Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110000 China;
the Clemson University SC 29607 USA;
the Amazon AWS AI Seattle Washington 98170 USA;
the CCNY Robotics Lab Electrical Engineering Department City College of New York NY 10031;
the Hostos Community College NY 10451 USA;
the CCNY Robotics Lab Electrical Engineering Department City College of New York NY 10031;
3D reconstruction; concrete inspection; deep neural network; quadrotor flying robot; visual-inertial fusion;