To learn the basics of image processing I thought the idea of making drone follow any object. To achieve this I used OpenCV module for image processing. The camera on drone gives H264 frame to android app, after that on android side frame is decoded to MAT object of OpenCV then that MAT object is used in OpenCV algorithm to detect the yellow ball and to know its position. Now this x,y position of detected ball is compared with current camera frame. Depending on its position in the frame, command of yaw and throttle is given to PlutoX drone.Drona Aviation will soon release the API on android platform to access the on board camera frame so that tinkerers can use it in image processing on PlutoX platform.