Hsiang-Yun Wu, Shigeo Takahashi, Chun-Cheng Lin, H. Yen
Metro maps with thumbnail photographs serve as common travel guides for providing sufficient information to meet the requirements of travelers in the cities. However, conventional methods attempt to minimize the total distance between stations and labels while maximizing the number of the labels rather than further taking into account the overall balance of the spatial distribution of labels. This paper presents an entropy-based approach for effectively annotating large annotation labels sufficiently close to the metro stations. Our idea is to decompose the entire labeling space intro regions bounded by the metro lines, and then further partition each region into Voronoi cells, each of which is reserved for a station to be annotated. This is accomplished by incorporating a new genetic-based optimization, while the fitness of the decomposition is evaluated by the entropy of the relative coverage ratios of such Voronoi cells. We also include several design examples to demonstrate that the proposed approach successfully distributes large labels around the metro network with minimal user intervention.
{"title":"Voronoi-Based Label Placement for Metro Maps","authors":"Hsiang-Yun Wu, Shigeo Takahashi, Chun-Cheng Lin, H. Yen","doi":"10.1109/IV.2013.11","DOIUrl":"https://doi.org/10.1109/IV.2013.11","url":null,"abstract":"Metro maps with thumbnail photographs serve as common travel guides for providing sufficient information to meet the requirements of travelers in the cities. However, conventional methods attempt to minimize the total distance between stations and labels while maximizing the number of the labels rather than further taking into account the overall balance of the spatial distribution of labels. This paper presents an entropy-based approach for effectively annotating large annotation labels sufficiently close to the metro stations. Our idea is to decompose the entire labeling space intro regions bounded by the metro lines, and then further partition each region into Voronoi cells, each of which is reserved for a station to be annotated. This is accomplished by incorporating a new genetic-based optimization, while the fitness of the decomposition is evaluated by the entropy of the relative coverage ratios of such Voronoi cells. We also include several design examples to demonstrate that the proposed approach successfully distributes large labels around the metro network with minimal user intervention.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133237938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Youbing Zhao, G. Clapworthy, J. Kohout, F. Dong, Yubo Tao, Hui Wei, N. McFarlane
In many biomedical applications, it is often desired to simulate, analyse and visualise the dynamics of a particular patient based on a patient-specific musculoskeletal model. However, reconstructing a patient-specific model directly from medical images is highly labour intensive, and impractical in the clinical context. A more efficient method is to derive it from an atlas musculoskeletal model using patient-specific hints. In this paper, Laplacian mesh processing is introduced to deform an atlas model to a patient-specific model, based on patient-specific landmarks extracted from two orthogonal clinical images and using least-squares error optimization. Muscle attachment landmarks and motion landmarks in the atlas are also transformed as part of the process. Drift and inter-surface penetrations are prevented by supplementary inter-surface landmarks. Mesh simplification and reconstruction are used to avoid out-of-memory failures that may result from trying to deform models at high resolution.
{"title":"Laplacian Musculoskeletal Deformation for Patient-Specific Simulation and Visualisation","authors":"Youbing Zhao, G. Clapworthy, J. Kohout, F. Dong, Yubo Tao, Hui Wei, N. McFarlane","doi":"10.1109/IV.2013.67","DOIUrl":"https://doi.org/10.1109/IV.2013.67","url":null,"abstract":"In many biomedical applications, it is often desired to simulate, analyse and visualise the dynamics of a particular patient based on a patient-specific musculoskeletal model. However, reconstructing a patient-specific model directly from medical images is highly labour intensive, and impractical in the clinical context. A more efficient method is to derive it from an atlas musculoskeletal model using patient-specific hints. In this paper, Laplacian mesh processing is introduced to deform an atlas model to a patient-specific model, based on patient-specific landmarks extracted from two orthogonal clinical images and using least-squares error optimization. Muscle attachment landmarks and motion landmarks in the atlas are also transformed as part of the process. Drift and inter-surface penetrations are prevented by supplementary inter-surface landmarks. Mesh simplification and reconstruction are used to avoid out-of-memory failures that may result from trying to deform models at high resolution.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124545925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The objective of this paper is to report on the development of prototype models for use in raising public awareness of changes in rural areas, focusing on green spaces, and testing responses to scenarios of change. Specifically, the focus is on the design of appropriate types and speeds of movement of features. This modelling is done using the Maya and ArcGIS software packages together in a novel combination of spatial and visualisation tools. The experiment results show evidence that different types of animation with interactive communication will influence participation and decision making in land use planning.
{"title":"Developing a Novel Approach for 3D Visualisation of Tarland","authors":"Chen Wang, David Miller, Yang Jiang, J. Morrice","doi":"10.1109/IV.2013.66","DOIUrl":"https://doi.org/10.1109/IV.2013.66","url":null,"abstract":"The objective of this paper is to report on the development of prototype models for use in raising public awareness of changes in rural areas, focusing on green spaces, and testing responses to scenarios of change. Specifically, the focus is on the design of appropriate types and speeds of movement of features. This modelling is done using the Maya and ArcGIS software packages together in a novel combination of spatial and visualisation tools. The experiment results show evidence that different types of animation with interactive communication will influence participation and decision making in land use planning.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114760902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The need to visualize data has emerged from the research field, it has been a useful tool to the study of scientific problems. However the truth is that data visualization is a great way to present data for any area dealing with information, because visually presented information is not only more appealing due to its use of pictograms and colours, but also more efficient in conveying large amounts of information. Throughout the years there have been efforts to develop a classification for these visualizations, in order to provide a better understanding of this way to present data. There are many different classifications but none of them is fully complete. In this paper it is discussed and developed a typology for online data visualization and info graphics. Such a typology will be relevant for a better understanding of what kinds of visualizations exist and in further research to better identify which elements compose a good visualization that is pleasing to the public.
{"title":"A Typology for Data Visualization on the Web","authors":"A. Figueiras","doi":"10.1109/IV.2013.45","DOIUrl":"https://doi.org/10.1109/IV.2013.45","url":null,"abstract":"The need to visualize data has emerged from the research field, it has been a useful tool to the study of scientific problems. However the truth is that data visualization is a great way to present data for any area dealing with information, because visually presented information is not only more appealing due to its use of pictograms and colours, but also more efficient in conveying large amounts of information. Throughout the years there have been efforts to develop a classification for these visualizations, in order to provide a better understanding of this way to present data. There are many different classifications but none of them is fully complete. In this paper it is discussed and developed a typology for online data visualization and info graphics. Such a typology will be relevant for a better understanding of what kinds of visualizations exist and in further research to better identify which elements compose a good visualization that is pleasing to the public.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117198424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aim of this paper is to categorise audience participation in interactive art according to a visualisation method. The research studied categories of audience in interactivities and applied artworks at the 7th Seoul Media Art Biennale. To establish the method of categorisation, the participation of the audience is classified into two factors: 'to act' or 'to be represented' in the visualisation realm. Based on these two factors, the research proposed a new graph for visualisation of human action in interactive art, categorising interactive art into four categories. The audience in interactive artwork performs the following roles: object, coordinator, transformer, character. Ultimately, this research predicts the meaning of the human being in virtual reality and utilises basic categories to visualise audience actions.
{"title":"Categorisation of Audience Relationship between Action and Visualisation in Interactive Art Installations","authors":"Je-ho Oh, Chungkon Shi","doi":"10.1109/IV.2013.47","DOIUrl":"https://doi.org/10.1109/IV.2013.47","url":null,"abstract":"The aim of this paper is to categorise audience participation in interactive art according to a visualisation method. The research studied categories of audience in interactivities and applied artworks at the 7th Seoul Media Art Biennale. To establish the method of categorisation, the participation of the audience is classified into two factors: 'to act' or 'to be represented' in the visualisation realm. Based on these two factors, the research proposed a new graph for visualisation of human action in interactive art, categorising interactive art into four categories. The audience in interactive artwork performs the following roles: object, coordinator, transformer, character. Ultimately, this research predicts the meaning of the human being in virtual reality and utilises basic categories to visualise audience actions.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128989168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In curriculum visualization, information visualization techniques are used to communicate the structure and content of a curriculum to the stakeholders, such as students, lecturers, and administrators. Curriculum visualization has recently drawn a lot of interest as there are growing demands to form larger educational units and to find savings by eliminating overlap. We have developed a novel approach to analyse and visualize the contents of a curriculum. Our software tool for curriculum visualization uses a fast heuristic to automatically lay out a curriculum diagram, provides tools to process the content information, and offers several coordinated views to visualize the curriculum contents and overlap. The approach and software tool have already been used successfully in one survey and two others are underway.
{"title":"Interactive Curriculum Visualization","authors":"H. Siirtola, Kari-Jouko Räihä, Veikko Surakka","doi":"10.1109/IV.2013.13","DOIUrl":"https://doi.org/10.1109/IV.2013.13","url":null,"abstract":"In curriculum visualization, information visualization techniques are used to communicate the structure and content of a curriculum to the stakeholders, such as students, lecturers, and administrators. Curriculum visualization has recently drawn a lot of interest as there are growing demands to form larger educational units and to find savings by eliminating overlap. We have developed a novel approach to analyse and visualize the contents of a curriculum. Our software tool for curriculum visualization uses a fast heuristic to automatically lay out a curriculum diagram, provides tools to process the content information, and offers several coordinated views to visualize the curriculum contents and overlap. The approach and software tool have already been used successfully in one survey and two others are underway.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130905779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Paulo Dias, Daniel Santos, Danilo Souza, Helder Santos, Catarina Coelho, M. T. Ferreira, E. Cunha, B. Santos
This work presents an ongoing work on a new approach to perform craniometric analysis based on contactless 3D modelling of skulls. Beside the acquisition process with a 3D range sensor and initial results in the semi-automatic detection of features in the skulls, we also present some results in the development of a 3D interactive interface that eases interaction for users with little experience on digital 3D manipulation. The final objective is to provide an easy to use 3D interface to allow semi-automatic detection of features in skulls. It is our belief that this system might be the first step towards a new methodology for craniometric analysis that can solve several of the current problems such as repeatability, wide access to skull information or bone damage during measurements.
{"title":"A New Approach for 3D Craniometric Measurements Using 3D Skull Models","authors":"Paulo Dias, Daniel Santos, Danilo Souza, Helder Santos, Catarina Coelho, M. T. Ferreira, E. Cunha, B. Santos","doi":"10.1109/IV.2013.61","DOIUrl":"https://doi.org/10.1109/IV.2013.61","url":null,"abstract":"This work presents an ongoing work on a new approach to perform craniometric analysis based on contactless 3D modelling of skulls. Beside the acquisition process with a 3D range sensor and initial results in the semi-automatic detection of features in the skulls, we also present some results in the development of a 3D interactive interface that eases interaction for users with little experience on digital 3D manipulation. The final objective is to provide an easy to use 3D interface to allow semi-automatic detection of features in skulls. It is our belief that this system might be the first step towards a new methodology for craniometric analysis that can solve several of the current problems such as repeatability, wide access to skull information or bone damage during measurements.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125363565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper proposes a complete strategy to optimally filter, enhance and register 3D point clouds captured by commodity RGBD cameras. Starting from the raw data grabbed from multiple viewpoints, we build the scene that gathers all the clouds in one consistent view. The process begins with the innovative adaptation of Kalman filter to Kinect's output. The resulting point cloud is subject to an outlier removal technique and a pre-alignment based on 3D features is performed. Finally, the alignment is refined using Iterative Closest Point (ICP) algorithm. The output of this research work is a consistent 3D model which can be directly used in virtual reality applications, or any 3D rendering process. Test results on real data are presented to validate our approach, and to justify the choice of its different modules.
{"title":"Robust and Sparse RGBD Data Registration of Scene Views","authors":"Abdenour Amamra, N. Aouf","doi":"10.1109/IV.2013.64","DOIUrl":"https://doi.org/10.1109/IV.2013.64","url":null,"abstract":"This paper proposes a complete strategy to optimally filter, enhance and register 3D point clouds captured by commodity RGBD cameras. Starting from the raw data grabbed from multiple viewpoints, we build the scene that gathers all the clouds in one consistent view. The process begins with the innovative adaptation of Kalman filter to Kinect's output. The resulting point cloud is subject to an outlier removal technique and a pre-alignment based on 3D features is performed. Finally, the alignment is refined using Iterative Closest Point (ICP) algorithm. The output of this research work is a consistent 3D model which can be directly used in virtual reality applications, or any 3D rendering process. Test results on real data are presented to validate our approach, and to justify the choice of its different modules.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116732497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper presents ongoing research aimed at improving surveying education through the use of virtual environments. Teaching surveying presents several challenges such as low student competence in mathematics, geometry and trigonometry, limited student access to instruments, limited availability of terrains on which to practice, dependency on weather conditions, and more. Prior research suggests that surveying education can be significantly improved with the use of digital teaching aids and virtual instruments. The goal of the work reported in the paper is to enhance traditional surveying instruction methods with a unique approach: an interactive Virtual Learning Environment (VLE) that supports students' mathematical representational fluency and includes realistic virtual terrains and surveying instruments that look, operate, and produce results comparable to the physical ones. The VLE is aimed at undergraduate students enrolled in Civil Engineering, Architecture and Building Construction Management programs and includes 5 educational modules, in this paper we describe the design, development and initial evaluation of the "Triangulations and Coordinates Calculations" module.
{"title":"An Interactive Virtual Environment for Teaching \"Triangulations and Coordinates Calculations\" to Surveying Students","authors":"H. Dib, N. Adamo-Villani, Stephen Garver","doi":"10.1109/IV.2013.58","DOIUrl":"https://doi.org/10.1109/IV.2013.58","url":null,"abstract":"This paper presents ongoing research aimed at improving surveying education through the use of virtual environments. Teaching surveying presents several challenges such as low student competence in mathematics, geometry and trigonometry, limited student access to instruments, limited availability of terrains on which to practice, dependency on weather conditions, and more. Prior research suggests that surveying education can be significantly improved with the use of digital teaching aids and virtual instruments. The goal of the work reported in the paper is to enhance traditional surveying instruction methods with a unique approach: an interactive Virtual Learning Environment (VLE) that supports students' mathematical representational fluency and includes realistic virtual terrains and surveying instruments that look, operate, and produce results comparable to the physical ones. The VLE is aimed at undergraduate students enrolled in Civil Engineering, Architecture and Building Construction Management programs and includes 5 educational modules, in this paper we describe the design, development and initial evaluation of the \"Triangulations and Coordinates Calculations\" module.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132219421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Social entrepreneurship is an emerging field which has the power to change the way we do business and resolve societal challenges. Visualization has not yet been systematically applied to support social entrepreneurs in creating, growing and scaling their ventures. We thus propose a framework for the use of knowledge visualization in the creation and development of social enterprises. We posit that each phase of the social venturing process requires a different knowledge visualization method. These diverse types of (interactive) graphic representations help social entrepreneurs cope with resource constraints and interact with a great variety of stakeholders. In this contribution we thus show that knowledge visualization can provide versatile and inexpensive ways to augment social entrepreneurs' activities systematically.
{"title":"Knowledge Visualization for Social Entrepreneurs","authors":"Sabrina Bresciani, Martin J. Eppler","doi":"10.1109/IV.2013.41","DOIUrl":"https://doi.org/10.1109/IV.2013.41","url":null,"abstract":"Social entrepreneurship is an emerging field which has the power to change the way we do business and resolve societal challenges. Visualization has not yet been systematically applied to support social entrepreneurs in creating, growing and scaling their ventures. We thus propose a framework for the use of knowledge visualization in the creation and development of social enterprises. We posit that each phase of the social venturing process requires a different knowledge visualization method. These diverse types of (interactive) graphic representations help social entrepreneurs cope with resource constraints and interact with a great variety of stakeholders. In this contribution we thus show that knowledge visualization can provide versatile and inexpensive ways to augment social entrepreneurs' activities systematically.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115040415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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