Partial differential equation-based surface modelling is a new approach of creating and manipulating three-dimensional geometric models. It uses the solution to a vector-valued partial differential equation subjected ...
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The amount of data produced in the world every day implies a huge challenge in understanding and extracting knowledge from it. Much of this data is of relational nature, such as social networks, metabolic pathways, or...
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During the last decade, medical imaging services have assumed a central role in healthcare institutions, and they are nowadays a decisive factor for the quality of diagnostic and treatments. Health stakeholders and po...
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During the last decade, medical imaging services have assumed a central role in healthcare institutions, and they are nowadays a decisive factor for the quality of diagnostic and treatments. Health stakeholders and policy makers have been steadily adopting PACS and DICOM standard, simplifying interoperability between distinct equipment and institutions. To assist images' interpretation, several visualization solutions emerged. However, these applications are targeted to specific operating systems, hindering its ubiquitous use, in increasing Web-based working environments. In this paper we present a Web-based DICOM viewer that was entirely developed with web technology, namely HTML5 and JavaScript. The result is a visualization station that is already in use in two medical imaging centres and that can be accessed through a common Web browser, from any computer, mobile device, or operation system.
The fast development of the graphics Processing Unit's programmability and parallel computing power provides new solutions for visualization technology. Using Image processing techniques according to the ICT image...
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ISBN:
(纸本)9783037855928
The fast development of the graphics Processing Unit's programmability and parallel computing power provides new solutions for visualization technology. Using Image processing techniques according to the ICT image gray state of existence and CUDA based classical ray-casting algorithm of volume rendering, By the contrast of volume rendering's effect showed in different aspects involved in its entirety, plane cutting and local amplification;We can get high quality image with fast speed and with the preprocessed volume date used in the method Contrast finely with the original volume date, which can be well complementary to display the characteristics of defects.
The proceedings contain 67 papers. The topics discussed include: three-dimensional shape descriptors and matching procedures;comparative performance of GPU, SIMD and OpenMP systems for raw template matching in compute...
ISBN:
(纸本)9788086943831
The proceedings contain 67 papers. The topics discussed include: three-dimensional shape descriptors and matching procedures;comparative performance of GPU, SIMD and OpenMP systems for raw template matching in computer vision;approximate reconstruction of meshes after material removing;novel trilateral approach for depth map filtering;network protocols for applications of shared virtual reality;anisotropic 3D texture synthesis with application to volume rendering;using an augmented reality game to find matching pairs;plausible visualization of the dynamic digital factory with massive amounts of lights;example-based deformation with support joints;integration of reconstruction error obtained by local and global kernel PCA with different role;gait recognition in the presence of occlusion: a new dataset and baseline algorithms;and improved algorithm for principal curvature estimation in point clouds due to optimized osculating circle fitting based on geometric algebra.
The objective of this paper is to analyze how children develop their spatial expression ability in 3-D space. We prepared a 3D expression system that has "Translation-test", "Rotation-test" and &qu...
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ISBN:
(纸本)9783642339318;9783642339325
The objective of this paper is to analyze how children develop their spatial expression ability in 3-D space. We prepared a 3D expression system that has "Translation-test", "Rotation-test" and "Paper-lay-out-test". As an experiment, we collected data by using our 3-D expression system for children between the ages of 4 and 6 in a preschool in August 2009, January 2010, and August 2010. We conducted a survey on correlation between the system and WPPSI: WPPSI is an IQ test. At these experiments, we conducted 5 performance tests with WPPSI. The results are summarized as follows: 1) Children are able to recognize virtual 3-D space of the system, and are able to express images in virtual 3-D space;2) The data shows the trend that spatial expression ability in space becomes better with advancing ages;3) We obtained correlations between the system and WPPSI. The system can analyze some abilities that are difficult for WPPSI.
Robots are used at various places for different applications and hence the subjects related to robotics find their place in the courses of Mechanical and Electrical engineering disciplines. The concepts of robotics ar...
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We present a novel method to visualize high-dimensional dataset as a landscape. The goal is to provide clear and compact representation to reveal the structure of high-dimensional datasets in a way that the size and d...
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We present a novel method to visualize high-dimensional dataset as a landscape. The goal is to provide clear and compact representation to reveal the structure of high-dimensional datasets in a way that the size and distinctiveness of clusters can be easily discerned, and the relationships among single points can be preserved. Our method is network-based, and consists of two main steps: clustering and embedding. First of all, the similarity graph of high-dimensional dataset is constructed based on the Euclidean distances between data points. For clustering, we propose a new network community detection algorithm to calculate the membership-degree of each vertex belonging to each community. For embedding, we bring forward a practical algorithm to obtain an evenly distributed and regularly shaped layout of data points, in a way that the original relationships among single points are preserved. Finally, the landscape-like visualization is produced by assigning altitudes to data points according to their membership-degrees and by inserting control points. In our high-dimensional data visualization, clusters form highlands, and border data points among clusters show up as valleys. The area and altitude of highland indicate the size and distinctiveness of data cluster respectively.
This work focuses on the development of the BrainTool, an embedded application that provides full automated volume segmentation and visualization of a reconstructed 3D mesh of human brains. A brain scan is performed t...
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This work focuses on the development of the BrainTool, an embedded application that provides full automated volume segmentation and visualization of a reconstructed 3D mesh of human brains. A brain scan is performed to acquire a set of voxels using a 3D Magnetic Resonance sampler. The application is executed on embedded (mobile) systems. The tool operates through three principal modules: an automatic segmentation to remove the non-brain structures, a parallel implementation state of art Marching Cubes mesh synthesizer followed by an OpenGL ES rendering step to achieve model interactive visualization. The development of the application is done using two different low cost boards integrating low power state of art CPU and GPU into embedded system on chip; in order to test the solution, samples acquired from MRI equipment commonly available at hospitals are used. The experiments allow to conclude that the Marching Cube algorithm parallelize fairly enough and can be distributed on the available resources reaching scalable performances when executed on laptop and embedded systems. Rendering of complex graphics assets up to 2.7M triangles per model is performed.
At Sólheimajökull glacier in southern Iceland, field evidence has been collected of a Tenth Century jökulhlaup (or glacial outburst flood). It was an exceptional event in terms of generation, scale, mag...
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