In this paper various IOT (Internet of Things) based applications have been reviewed. The roles of image processing in IOT Based systems have been explored. There are number of image processing based technologies which are being integrated in IOT based applications. The paper gives an overview of role of image processing in IOT based smart systems in different application areas. The work could be useful for developing and exploring the new applications of image processing in IOT based systems.

Keywords : IOT (Internet of Things), Image processing, Sensors.