The techniques of localization and characteristic identification for the object is one of important techniques in reality and its advantages get more and more researching in some different fields currently such as fruits harvesting robots, self-propelled vehicles, vision systems for industrial robots. This research promotes a image processing algorithm to identify characteristics and to estimate the obstacle distance for three wheeled mobile robot. Beside that, this research also give the image processing algorithms that is embedded in raspberry pi module which connects with two cameras. STM32F4-Discovery module that is used to the controller for robot. The experimental results show the flexibility of robot in identification processing part, it is also determine the direction of robot and help robot to avoid the obstacles on the trajectory of the robot. Besides three wheeled mobile robot environmental record information about 30cm-80cm with best viewing angle 63° and the speed of response of about 0.2 m/s.