Data fusion methods are powerful tools for evaluating experiments designed to discover measurable features of directly unobservable systems. We describe an interactive software platform, Visual Integration for Bayesia...
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Data fusion methods are powerful tools for evaluating experiments designed to discover measurable features of directly unobservable systems. We describe an interactive software platform, Visual Integration for Bayesian Evaluation, that ingests or creates Bayesian posterior probability matrices, performs data fusion and allows the user to interactively evaluate the classification power of fusing various combinations of data sources, such as transcriptomic, proteomics, metabolomics, biochemistry and function.
Most software systems for oral implantology are based on a multiview approach and often accompanied with a 3-D rendered model. A more integrated and realistic 3-D approach for implant surgery-also guaranteeing correct...
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Most software systems for oral implantology are based on a multiview approach and often accompanied with a 3-D rendered model. A more integrated and realistic 3-D approach for implant surgery-also guaranteeing correctness in measures-is desirable to gain a deep and sure knowledge of the patient's anatomy before inserting the implants, thus reducing the risk of damaging surrounding structures. We present a 3-D software system where computer graphic techniques have been used to create a smooth and user-friendly 3-D environment to work upon for oral implant planning and simulation. Interpolation of the axial slices is used to produce a continuous radiographic volume and get an isotropic voxel to achieve a correct work context. Freedom of choosing, arbitrarily, during the planning phase, the best cross-sectional plane for achieving correct measurements is obtained through interpolation and texture generation. Correct orientation of the planned implants is also easily computed by exploiting a radiological mask with radio-opaque markers, which is worn by the patient during the computed tomography (CT) scan. Measurement precision was validated considering different scans of a dried human partially edentulous mandible, which was scanned several times, with different angular orientations. The achieved precision (from 0.14% to 0.84% of the absolute value of error) outperforms that using usual DentaScan multiview approaches, and it is even better than the precision previously obtained by the DentalVox tool.
Recently, haptics research has grown into an interdisciplinary field, covering perception, psychophysics, virtual reality, mechanism design, and control. Haptics research is considered to have originated from teleoper...
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Recently, haptics research has grown into an interdisciplinary field, covering perception, psychophysics, virtual reality, mechanism design, and control. Haptics research is considered to have originated from teleoperator systems. In these initial explorations, increasing the transparency level of the mechanical master/slave manipulator system was the main issue [1]. As computer graphics technology has emerged to realize a wide range of virtual reality applications, the development of control technologies and haptic master device designs have adapted to focus mainly on interaction with virtual environments. Numerous breakthroughs in visual, sound, and haptic modeling technologies enable the real-time display of contact with virtual objects, including capabilities such as shape deformation and reactive force. There have been attempts to model and display the fine details of touched surfaces to enhance virtual presence [2]. Research in neuroscience and psychophysics has led to discoveries in the human perceptual processes underlying haptic sensations. Drawing on this understanding, researchers have begun to examine efficient methods of building tactile display units that are capable of rendering feelings of roughness, softness, and temperature [3].
In mapping textures onto 3D models, it is essential to eliminate all seams and avoid excessive distortions To achieve these goals, texture tiling provides an alternative approach for texturing surfaces In this paper, ...
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In mapping textures onto 3D models, it is essential to eliminate all seams and avoid excessive distortions To achieve these goals, texture tiling provides an alternative approach for texturing surfaces In this paper, a texture tiling approach that combines polycube-maps and Wang tiles for 3D models is proposed The polycube of a 3D model is first constructed automatically and a tiling mechanism is then used to fill the tiles on the polycube Finally, rectangular cells which are transformed front the polycube are generated and textures are mapped onto the 3D model The results show that the proposed approach leads to seamless texture mapping on 3D models
We present a robust algorithm for estimating visibility from a given viewpoint for a point set containing concavities, non-uniformly spaced samples, and possibly corrupted with noise. Instead of performing an explicit...
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We present a robust algorithm for estimating visibility from a given viewpoint for a point set containing concavities, non-uniformly spaced samples, and possibly corrupted with noise. Instead of performing an explicit surface reconstruction for the points set, visibility is computed based on a construction involving convex hull in a dual space, an idea inspired by the work of Katz et al. [26]. We derive theoretical bounds on the behavior of the method in the presence of noise and concavities, and use the derivations to develop a robust visibility estimation algorithm. In addition, computing visibility from a set of adaptively placed viewpoints allows us to generate locally consistent partial reconstructions. Using a graph based approximation algorithm we couple such reconstructions to extract globally consistent reconstructions. We test our method on a variety of 2D and 3D point sets of varying complexity and noise content. (C) 2010 Elsevier Ltd. All rights reserved.
This paper describes the implementation of a MATLAB (R) tool to plot the three-dimensional polar radiation diagram generated by a conformal antenna array. A related tool has also been developed for visualizing the geo...
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This paper describes the implementation of a MATLAB (R) tool to plot the three-dimensional polar radiation diagram generated by a conformal antenna array. A related tool has also been developed for visualizing the geometrical arrangement (positions and orientations) of the elements, as well as the relative values of the amplitudes and phases of their excitations. Supporting M-files are available.
3D content still is not widely found on the Web. Now, though, several new technologies may widen 3D's presence on the Web by transforming browsers into computing platforms powerful enough to play the content.
3D content still is not widely found on the Web. Now, though, several new technologies may widen 3D's presence on the Web by transforming browsers into computing platforms powerful enough to play the content.
Motivation: computer Aided Identification systems provide users with the resources to relate morpho-anatomic observations with taxa names and to subsequently access other knowledge about the organisms. They have the a...
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Motivation: computer Aided Identification systems provide users with the resources to relate morpho-anatomic observations with taxa names and to subsequently access other knowledge about the organisms. They have the ability to manage descriptive data and make identifications through interactive keys. They are essential for both authors and users of biodiversity information. Xper(2) version 2.0 is one of the most user-friendly tools in its category and provides a complete environment dedicated to taxonomic management.
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