Abstract
Abstract. The remote visualization and navigation of 3D data directly inside the web browser is becoming a viable option, due to the recent efforts in standardizing the components for 3D rendering on the web platform. Nevertheless, handling complex models may be a challenge, especially when a more generic solution is needed to handle different cases. In particular, archeological and architectural models are usually hard to handle, since their navigation can be managed in several ways, and a completely free navigation may be misleading and not realistic. In this paper we present a solution for the remote navigation of these dataset in a WebGL component. The navigation has two possible modes: the ”bird’s eye” mode, where the user is able to see the model from above, and the ”first person” mode, where the user can move inside the structure. The two modalities are linked by a point of interest, that helps the user to control the navigation in an intuitive fashion. Since the terrain may not be flat, and the architecture may be complex, it’s necessary to handle these issues, possibly without implementing complex mesh-based collision mechanisms. Hence, a complete navigation is obtained by storing the height and collision information in an image, which provides a very simple source of data. Moreover, the same image-based approach can be used to store additional information that could enhance the navigation experience. The method has been tested in two complex test cases, showing that a simple yet powerful interaction can be obtained with limited pre-processing of data.
Highlights
The remote visualization of complex geometry has become feasible only in the last couple of years
This paper presents a method for the navigation of complex archelogical 3D environments, especially tailored for web visualization
This paper presented a solution for the navigation of 3D environments on which the usual trackball paradigm for navigation cannot be applied
Summary
The remote visualization (via Web) of complex geometry has become feasible only in the last couple of years. The issues about the visualization of 3D models are related to the necessity to handle complex data, and to the interaction with them. Navigating 3D environments is not trivial, due to both the nature of data and the fact that most of the users are not used to that. This is especially true when dealing with 3D models of complex environment (terrains with buildings and ruins, often found in the archeological field); even more when 3D models come from sampling technologies (3D scanning or 3D-from-photo), which produce high-resolution, unstructured triangulated models. This paper presents a method for the navigation of complex archelogical 3D environments, especially tailored for web visualization.
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