Abstract
In this paper, we propose an approach for supporting the design and implementation of interactive and realistic Augmented Reality (AR). Despite the advances in AR technology, most software applications still fail to support AR experiences where virtual objects appear as merged into the real setting. To alleviate this situation, we propose to combine the use of model-based AR techniques with the advantages of current game engines to develop AR scenes in which the virtual objects collide, are occluded, project shadows and, in general, are integrated into the augmented environment more realistically. To evaluate the feasibility of the proposed approach, we extended an existing game platform named GREP to enhance it with AR capacities. The realism of the AR experiences produced with the software was assessed in an event in which more than 100 people played two AR games simultaneously.
Highlights
The possibilities that Augmented Reality (AR) technology offers for superimposing digital information on the users’ view of the real world have been already exploited in several areas such as education [18], medicine [13] or entertainment [23]
Following the approach described in the previous section, AR GREP supports this type of experiences using a special type of VR scene (AR Scene) that includes a fixed virtual camera and a background pane to render the video captured by the camera of the computer or device that runs the system
We presented an approach for implementing realistic and interactive AR experiences that combines the use of modelbased AR techniques with the benefits that current game engines offer for the design and management of 3D virtual environments
Summary
The possibilities that AR technology offers for superimposing digital information on the users’ view of the real world have been already exploited in several areas such as education [18], medicine [13] or entertainment [23]. According to Azuma [2], the users of an ideal AR system should have the impression that the real and virtual objects coexist in the same space. The computer-generated images usually overlap the vision of the user. This approach might be adequate in certain cases, for example when augmenting a real object with additional information, the results obtained for AR games or AR reconstructions of historical sites might not be satisfactory
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