Method for providing augmented reality service, server and portable terminal therefor

PURPOSE: A method for providing an augmented reality service, a server thereof and a portable terminal thereof are provided to perform mapping of regional information of a corresponding object by accurately recognizing an actual object within an acquired image. CONSTITUTION: A terminal control unit(380) extracts a specific image point from acquired image information, and transmits the specific image point to an AR(Augmented Reality) providing server. The terminal control unit receives the region information data corresponding to the image feature point from the AR providing server. The terminal control unit synthesizes the image information with the region information data, and displays the synthesized information through a display unit(320).