MOBILE VISUAL SEARCH AND AUGMENTED REALITY: ARCHITECTURE, TECHNOLOGIES, BASED ON MPEG STANDARD
The modern technology implemented in mobiles, tablets or glass devices requires the existence of powerful applications for processing multimedia data, such as video or images. These devices are equipped with GPS, compass and gyroscope, and are connected to wireless network broadband in order to quickly send the information. Retrieval applications of content-based visual and Augmented Reality (AR) have started being used on mobile platforms and represent a challenge for research in this field. The user is given the opportunity to access and search information associated with the real world as object or location. Augmented Reality technology allows the information to be superimposed virtually on the real environment, and can be used as a way to view contextual information, thus increasing the perception of reality. Displaying such information in various ways, following requests made by the user to identify and find information related to the real environment, requires specific performance in recognition and image processing for labeling and describing objects or places of interest. Furthermore, the retrieval system must be robust to allow reliable recognition of objects and places, and return results according to user requirements. This article describes a system architecture based on MPEG-7 standard, which meets the functionality and interoperability of applications based on Augmented Reality for information retrieval and represents a first step for the development of such applications in university field, in educational technologies, training or guiding the users to courses or laboratories.