“…In recent times, drone technology has led to small-sized drones such as quadcopters, mini-drones, etc. A benefit of these small-sized drones is that they can easily enter a building and can hover inside a building for the sake of monitoring and surveillance in various fields of life, such as the surveillance of industrial areas [1][2][3] and for disaster management, military uses [4], search and rescue [5,6] shipping and delivery [7], precision agriculture [8,9], and many other applications. There are other possible applications of commercial drones, such as aerial photography, weather forecasting, etc.…”