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Item Low-cost Experimental Setups for Mid-air 3D Reconstruction(The Eurographics Association, 2015) Dancu, Alexandru; Fratarcangeli, Marco; Fourgeaud, Mickaël; Franjcic, Zlatko; Chindea, Daniel; Fjeld, Morten; Andrea Giachetti and Silvia Biasotti and Marco TariniThe reconstruction of the physical environment using a depth sensor involves data-intensive computations which are difficult to implement on mobile systems (e.g., tracking and aligning the position of the sensor with the depth maps). In this paper, we present two practical experimental setups for scanning and reconstructing real objects employing low-price, off-the-shelf embedded components and open-source libraries. As a test case, we scan and reconstruct a 23 m high statue using an octocopter without employing external hardwareItem A 3DWeb Application for Weather Forecast Based on WebGL(The Eurographics Association, 2015) Graciano, Alejandro; Rueda, Antonio J.; Feito, Francisco R.; MartÃnez, Francisco; Mateu Sbert and Jorge Lopez-MorenoManagement, interpretation and visualization of geoscientific and atmospherical information is a major problem for the geoscientist and for a correct diffusion, due to its high volume, complexity, spatiotemporal dimension and three-dimensional nature. As a result, development of software tools for integration, exploration and graphical analysis of the growing amount of available geodata is of great importance. In the last decade a trend towards the implementation of these tools as web applications has consolidated because of its benefits: universal access, permanent availability and ease of collaborative use. However until recently Web development technologies have been ill-equipped for implementing interactive 2D and 3D applications dealing with large amounts of data as required by many geoscience applications. The support of WebGL by most modern browsers has changed this situation and promises to revolutionize the Web in the next few years with a new generation of visually appealing, high performance interactive applications. In this work we describe the technologies for 3D Web and their use in the context of atmospherical data using a 3D weather information application as case study.Item Industrial Facility Modeling Using Procedural Methods(The Eurographics Association, 2015) Bishop, M. Scott; Max, Nelson; Mateu Sbert and Jorge Lopez-MorenoWe present an end-to-end system for procedurally modeling an industrial facility. The system is a collection of utilities that work together to assemble, lay out, and model a typical industrial facility (e.g. a wastewater treatment plant). A plug-in to the CityEngine (R) procedural modeling application was built in Java (TM) using an open-source framework. The plug-in provides the interface to access the facility assembly and layout engines, the facility rule file and Python script generators, and the OBJ footprint exporter. The system provides functionality for placing the facility model into an existing 3D scene using an established facility location algorithm that maximizes the minimum distance from existing structures in the scene.Item Explaining Neighborhood Preservation for Multidimensional Projections(The Eurographics Association, 2015) Martins, Rafael Messias; Minghim, Rosane; Telea, Alexandru C.; Rita Borgo and Cagatay TurkayDimensionality reduction techniques are the tools of choice for exploring high-dimensional datasets by means of low-dimensional projections. However, even state-of-the-art projection methods fail, up to various degrees, in perfectly preserving the structure of the data, expressed in terms of inter-point distances and point neighborhoods. To support better interpretation of a projection, we propose several metrics for quantifying errors related to neighborhood preservation. Next, we propose a number of visualizations that allow users to explore and explain the quality of neighborhood preservation at different scales, captured by the aforementioned error metrics.We demonstrate our exploratory views on three real-world datasets and two state-of-the-art multidimensional projection techniques.