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The Code-Map Metaphor A Review of Its Use Within Software visualisations 12

The Code-Map Metaphor <i>A Review of Its Use Within Software...

12th International Joint conference on computer Vision, imaging and computer graphics Theory and Applications (VISIGRAPP)

作者： Bacher, Ivan Mac Namee, Brian Kelleher, John D. Dublin Inst Technol Dublin Ireland Univ Coll Dublin Dublin Ireland

ISBN: (纸本)9789897582288

Software developers can use software visualisations employing the code-map metaphor to discover and correlate facts spread over a large code base. This work presents an extensive review of the use of the code-map metaphor for software visualisation. The review analyses a set of 29 publications, which together describe 21 software development tools that use visualisations employing the code-map metaphor. The review follows a task oriented framework to guide the analysis of the literature in terms of the task, audience, target, medium, representation, and evidence dimensions based on the code- map metaphor. Although the literature indicates that software visualisations based on the code-map metaphor are perceived by the research community to be helpful across all aspects of the software develop process, the main finding of our review is that there is a lack of quantitative evidence to support this perception. Thus, the effectiveness of visualisations incorporating the code-map metaphor is still unclear. The majority of the software visualisations analysed in this study, however, do provide qualitative observations regarding their usage in various scenarios. These are summarised and presented in this review as we believe the observations can be used as motivation for future empirical evaluations.

关键词： Software visualisation Dense Pixel Representation Review Code-Map Metaphor SeeSoft

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A technique for visualizing dihedral signal of large protein sequences

A technique for visualizing dihedral signal of large protein...

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International conference on computer graphics, imaging and visualisation, CGIV'06

作者： Nguyen, Quang Vinh Huang, Mao Lin Qian, Yu Zhang, Kang Faculty of Information Technology University of Technology Sydney Australia Department of Computer Science University of Texas at Dallas TX United States

ISBN: (纸本)0769526063

This paper presents a clustering and visualization technique for analyzing dihedral angles of large protein sequences. The clustering is used for discovering and grouping those similar dihedrals while the visualization can display and navigate sequences of dihedral angles of several proteins as well as their clustered property. In order to visualize a very large sequence of hundred thousands of dihedral signals, we plot them on a spiral coordinate system. This spiral visualization ensures the linear distribution without distortion or interruption of a very long sequence of points. A clustering algorithm is also provided to group those dihedral signals into different clusters so that it can enhance the analysis process. Our system can also zoom to display a number of selected proteins interactively. © 2006 IEEE.

关键词： Proteins

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Offline Large Scale Fourier Volume Rendering on Low-end Hardware 7

Offline Large Scale Fourier Volume Rendering on Low-end Hard...

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7th Cairo International Biomedical Engineering conference CIBEC 2014 Contents

作者： Abdellah, Marwan Eldeib, Ayman Sharawi, Amr Cairo Univ Syst & Biomed Engn Dept Giza Egypt

ISBN: (纸本)9781479944125

The resolution of medical data sets acquired by state-of-the-art imaging modalities is growing rapidly. Providing high-end workstations to visualize such data sets might not be affordable in some cases. To resolve this issue, there should be alternative convenient software solutions to handle huge data sets either by out-of-core or offline rendering applications. This presented work features an offline rendering pipeline that is capable of rendering digital x-ray radiographs of very large scale volumetric data sets, which cannot fit into the memory of the running platform relying on spatial-domain decomposition and projection-slice theorem.

关键词： Fourier transforms biomedical equipment data visualisation diagnostic radiography image resolution medical image processing pipeline processing rendering (computer graphics) data set visualization digital X-ray radiograph rendering high-end workstation large scale volumetric data set low-end hardware medical data set acquisition medical data set resolution offline large scale Fourier volume rendering offline rendering application offline rendering pipeline work feature out-of-core rendering application projection-slice theorem running platform memory software solution spatial-domain decomposition state-of-the-art imaging modality Back Software Transforms software solution diagnostic radiography Medical device Data visualisation Pipeline processing Medical image processing image resolution Fourier Transform Transform Dataset Back Rendering (computer graphics) computer software Rendering OFF LINE

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Evaluating the Memorability and Readability of Micro-filter visualisations 12

Evaluating the Memorability and Readability of Micro-filter ...

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12th International Joint conference on computer Vision, imaging and computer graphics Theory and Applications (VISIGRAPP)

作者： Tschinkel, Gerwald Sabol, Vedran Know Ctr GmbH Inffeldgasse 13 Graz Austria Graz Univ Technol Inffeldgasse 13 Graz Austria

ISBN: (纸本)9789897582288

When using classical search engines, researchers are often confronted with a number of results far beyond what they can realistically manage to read;when this happens, recommender systems can help, by pointing users to the most valuable sources of information. In the course of a long-term research project, research into one area can extend over several days, weeks, or even months. Interruptions are unavoidable, and, when multiple team members have to discuss the status of a project, it's important to be able to communicate the current research status easily and accurately. Multiple type-specific interactive views can help users identify the results most relevant to their focus of interest. Our recommendation dashboard uses micro-filter visualizations intended to improve the experience of working with multiple active filters, allowing researchers to maintain an overview of their progress. Within this paper, we carry out an evaluation of whether micro-visualizations help to increase the memorability and readability of active filters in comparison to textual filters. Five tasks, quantitative and qualitative questions, and the separate view on the different visualisation types enabled us to gain insights on how micro-visualisations behave and will be discussed throughout the paper.

关键词： Reommendation visualisation Filtering Multiple Views Visual Information Seeking Evaluation Cultural Heritage

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GPU accelerated regional lung air volume measurements from phase contrast X-ray images

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JOURNAL OF REAL-TIME IMAGE PROCESSING 2016年第1期12卷 43-54页

作者： Islam, M. Sirajul Kitchen, Marcus J. Monash Univ Sch Phys Clayton Vic 3800 Australia

Phase contrast X-ray imaging can provide significantly enhanced visibility of soft tissues over absorption contrast imaging with spatial resolution on the micron scale. These characteristics have enabled the visualisation of lungs aerating at birth in real time. We have developed techniques to measure regional lung air volume from these images to help develop methods for safely ventilating the lungs of preterm infants. However, analyzing a large sequence of image data requires considerable computation time on traditional desktop computers. Real-time feedback of the regional ventilation would greatly benefit researches to optimize ventilation strategies. The present paper describes methods for improving the execution time of the lung volume measurements using graphics processing units (GPUs). We tested the performance of the GPU-accelerated lung volume computations using two different GPUs and compared the results with two CPUs. An overall speedup of 1.75-14.12x was achieved if an absorption contrast-based computation was used for volumetric computation, while a 2.43-15.78x speedup was attained in the case of a more compute bound phase retrieval technique. This speedup enabled us to perform lung air volume reconstruction on a local computer with the analysis taking only a few minutes, which is very helpful to guide our experiments in the laboratory. We also show that the accuracy of the GPU-based lung volume measurements was in excellent agreement with the CPU-based counterpart.

关键词： graphics processing unit Phase contrast X-ray imaging Parallel processing

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3D model generation by morphing

3D model generation by morphing

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International conference on computer graphics, imaging and visualisation, CGIV'06

作者： Kaneko, Kosuke Okada, Yoshihiro Niijima, Koichi Graduate School of Information Science and Electrical Engineering Kyushu University 6-1 Kasuga-koen Kasuga Fukuoka 816-8580 Japan

ISBN: (纸本)0769526063

This paper proposes a 3D model generation system that outputs intermediate3D shape models between two already existing 3D models by morphing. Although there have been a lot of computer animation software, it takes a long time to create a 3D shape model even using such computer animation software. Morphing is one of the techniques used to easily create 3D models. If we have two different 3D shape models, it is possible to generate intermediate 3D shape models between them by morphing. However, there are two main problems in the morphing of polygonal models. Those are vertex mismatch and semantic topology mismatch. In this paper, the authors propose an algorithm that is free from the vertex mismatch problem and that automatically determines the semantic topology match. The proposed system based on the algorithm decomposes both two polygonal models, makes decomposed element pairs between them, and then generates intermediate 3D shape models by morphing as for the decomposed element pairs automatically. © 2006 IEEE.

关键词： computer graphics

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Optimized NURBS ship hull fitting using simulated annealing

Optimized NURBS ship hull fitting using simulated annealing

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International conference on computer graphics, imaging and visualisation, CGIV'06

作者： Wen, Ang Swee Shamsuddin, Siti Mariyam Hj. Samian, Yahya Department of Graphics and Multimedia Faculty of Computer Science and Information System Universiti Teknologi Malaysia Department of Marine Technology Faculty of Mechanical Engineering Universiti Teknologi Malaysia

ISBN: (纸本)0769526063

The shape of a NURBS curve or surface is defined by the location of its control points, the control points' weights, and the knot vectors. Most of the curve and surface design tried to modify the control points. However, it is still impossible to obtained accurate control points for a reconstructed NURBS curve or surface. The fitness of these surfaces is generally considered a subjective notion depending on the judgment of the designers (eg. visually pleasing, devoid of unnecessary bumps or wiggles, satisfying certain continuity requirements). One of the restriction in ship hull design is that the existing details of a ship design on paper or a ship that already been constructed physically couldn't be reconstructed accurately and concisely in a ship hull design software. This research strives to solve this problem by creating fair ship hull surface using NURBS. An optimized NURBS ship hull fitting approach using simulated annealing is developed. Evaluation and analysis (accuracy, fairness and speed of processing) on the proposed approach is done.

关键词： Ships

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NPAR by Example: Line drawing facial animation from photographs

NPAR by Example: Line drawing facial animation from photogra...

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International conference on computer graphics, imaging and visualisation, CGIV'06

作者： Yuan, Luo Gavrilova, Marina L. Sousa, Mario Costa Department of Computer Science University of Calgary Calgary Alta. T2N 1N4 Canada

ISBN: (纸本)0769526063

This paper presents a new method for generating nonphotorealistic (NPR) facial expression animations. The method consists of two main processing parts. First, a particular NPR style portrait is created from a frontal facial photograph. Facial expressive details, like: expressive wrinkles,fine creases, even freckles, can be included in the synthesized portrait, which makes it more expressive. Second, with two different facial expression portraits, a metamorphing algorithm using distance transform is utilized to produce the 2D animation. Our morphing process is fully automated, no control point or any manual work is required. Finally, a continuous facial expression animation is produced. The resulted animation is useful in a number of potential applications, ranging from entertainment and education to teleconferencing and psychology research. © 2006 IEEE.

关键词： Face recognition

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Improved three-step phase shifting profilometry using digital fringe pattern projection

Improved three-step phase shifting profilometry using digita...

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International conference on computer graphics, imaging and visualisation, CGIV'06

作者： Hu, Yingsong Xi, Jiangtao Chicharo, Joe Yang, Zongkai School of Electrical Computer and Telecommunications Engineering University of Wollongong NSW 2522 Australia Department of Electronic and Information Engineering Huazhong University of Science and Technology Wuhan City 430074 China

ISBN: (纸本)0769526063

In this paper, an improved method for three-step phase shifting profilometry (PSP) is presented to eliminate the errors introduced by the second order harmonic when digital projection are used to generate fringe patterns. Firstly, the error caused by the second order harmonic is theoretically analyzed. Then based on the error analysis and principle of PSP, we propose a novel approach, called improved three-step phase shifting profilometry (I3PSP), to eliminate the influence of the second order harmonic. Finally, simulations are performed to verify the effectiveness of the proposed I3PSP, which demonstrate that the reconstruction accuracy of using three-step PSP has been significantly improved by the proposed I3PSP. © 2006 IEEE.

关键词： Phase shift

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Data visualisation on a mobile app for real-time mental health monitoring 27

Data visualisation on a mobile app for real-time mental heal...

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27th International conference on Information visualisation (IV) / 19th International conference computer graphics, imaging and Visualization (CGiV)

作者： Gomes, Nuno Pato, Matilde Lourenco, Andre Marcelo, Renato Santos, Pedro Datia, Nuno Politecn Lisboa Lisbon Sch Engn ISEL Lisbon Portugal NOVA Sch Sci & Technol NOVA LINCS Monte De Caparica Portugal Univ Lisbon LASIGE FCUL Lisbon Portugal

ISBN: (纸本)9798350341614

Anxiety disorders refer to mental health conditions characterized by excessive and persistent worry, fear or dread, which can interfere with daily life. These disorders are pervasive worldwide but can be treated with psychotherapy, medication, or both. Detecting them in time is key to avoid further severe development after an initial crisis. In this paper, we present a solution based on self-monitoring, using wearables, smartphones and Machine Learning (ML) to assess users' anxiety and panic levels. This is the first paper to embrace and present a visualisation system for mental health focused on patients. User studies support the solution's quality. With this system, patients are empowered to control their situation better, helping the medical staff to get more insight into when and where a crisis occurs.

关键词： Data visualisation Machine Learning Telemonitoring Mental Health

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