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Prezentace Mixed Reality Geographical Information System_Pavlišta Jiří

Y04A2Z - Anglický jazyk 2-1

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referential personal view (egocentric), which poses new challenges. To test these issues we have developed an indoor pre-navigation visual interface to simulate the urban environment in which the user will ultimately navigate.
In particular, a novel mixed reality interface, referred to as MRGIS, was implemented that uses computer-vision techniques to estimate the camera position and orientation, in six degrees-of-freedom, and to register geospatial multimedia information, in real time. Two procedures are being pursued for calibration: a technique involving a set of pre-calibrated marker cards, and an algorithm using image processing to identify fiducial points in the scene.
In the context of LOCUS, geospatial information that we believe would make a significant improvement in the navigation process includes 3D maps, 2D maps (with other graphical overlays), 2D and 3D textual information (guidance, description and historical information) and spatial sound (narration).
Another advantage of the system is that it provides the user with a tool to control the form of visualization and the level of interaction with geographical information, in both VR and AR environments. MRGIS can seamlessly operate using any number of input devices.
The main virtue of the interface is that it can combine the multimedia information effectively without sacrificing the overall efficiency of the application. Thus, different pre-navigation scenarios can be supported to meet the requirements and demands of the users.
Another advantage of MRGIS in terms of augmentation is that it supports VRML animation. Animation as a navigational aid is an unexplored area and we believe that it has a significant potential. To illustrate the capabilities of animation, a virtual representation of a human, an avatar, was created in the virtual scene. Next, a potential walkthrough around City University’s campus was designed. This makes the application look more ‘alive’ thus increasing the user’s feel of immersion in the environment.
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Vloženo: 26.04.2009

Velikost: 146,00 kB

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