This work presents two techniques for computing dense disparity maps from two or more images. These methods are exploited in an application of augmented reality in order to add a virtual object with proper occlusions in the real scene. The proposed stereo matching techniques are based on area matching. We first present an implementation of the dynamic programming which produces a high quality of dense disparity map. Furthermore, in order to improve both the time computing and the map quality, we propose a hierarchical approach which combines the multi-resolution and the dynamic programming. The disparity maps thus obtained are applied in augmented reality in order to integrate in a realistic way the virtual objects. The applicability of the method is shown on many sequences of images.Index Terms-Augmented reality, image matching, dynamic programming, hybrid approach, dense disparity map.
Abstract:One of the main weaknesses with traditional computing is the fact that the numerical world of the computer is decoupled from the user's real world. The application of Augmented Reality (AR) can provide interactive systems in which real objects and computer data are combined in a cohesive way. This new paradigm has many potential applications in various fields, in particular in the maintenance domain. It allows the user to see computer generated virtual objects superimposed to the real world through the see-through Head Mounted Display (HMD). The technician of maintenance, when using this system, can interact with the virtual world and have additional information, such as instruction for performing maintenance tasks in form of text messages, images, 3-D models of pieces or audio such as speech instruction. In this paper, we propose a design process of the maintenance system focused on the analysis of the interaction between the user, the system and the real world. This area is based on the UML notation. The use of UML represents our ergonomic and software design process basis for AR systems. This process also is based on ergonomic characteristics study within a UML system description and on the hybrid PAC-Amodeus model architecture adaptation for the AR systems.
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