This paper proposes a model-less feedback system driven by tourist tracking data that are automat... more This paper proposes a model-less feedback system driven by tourist tracking data that are automatically collected through mobile applications to visualize the gap between geomedia recommendations and the actual routes selected by tourists. High-frequency GPS data essentially make it difficult to interpret the semantic importance of hot spots and the presence of street-level features on a density map. Our mobile collaborative framework reorganizes tourist trajectories. This processing comprises (1) extracting the location of the user-generated content (UGC) recording, (2) abstracting the locations where tourists stay, (3) discarding locations where users remain stationary, and (4) simplifying the remaining points of location. Then, our heatmapping system visualizes heatmaps for hot streets, UGC-oriented hot spots, and indoor-oriented hot spots. According to our experimental study, this method can generate a trajectory that is more adaptable for hot street visualization than the raw t...
2018 22nd International Conference Information Visualisation (IV)
Octilinear network layouts are commonly used as the schematic representation of railway maps due ... more Octilinear network layouts are commonly used as the schematic representation of railway maps due to their enhanced readability. However, it is often time-consuming to place station names on such railway maps by trial and error, especially within the limited labeling space around interchange stations. This paper presents a progressive approach to placing station names around stations in schematic railway maps for better automation of map labeling processes. The idea behind our approach is to annotate stations in dense downtown areas around the interchange stations first and then those in sparse rural areas. This is achieved by introducing the sum of geodesic distances over the railway network to identify the proper order in which to annotate stations. In the actual annotation process, we increase the labeling space around the railway network when necessary by progressively stretching railway line segments while retaining their original directions, which allows us to respect the original schematic layout as much as possible. We present several experimental results to demonstrate the effectiveness of the proposed approach, together with a discussion on parameter tuning in our formulation.
Nowadays, there is an explosion of spatio-temporal data, such as big data of human movements and ... more Nowadays, there is an explosion of spatio-temporal data, such as big data of human movements and aerial photographs taken in time series. Interactive and dynamic visualization of such data play important roles in researching and applications in the fields of traffic controlling, education, storytelling and so on. On the other hand, besides of the “modern” digital data, there are also large amount of “traditional” analogue data in the forms of maps, books, photographs and so on. Such analogue materials are valuable for historical researches and education, but current spatio-temporal visualization systems are not good at dealing such analogue materials compared to their performances on digital data. This paper introduces our research on collaging analogue maps and timeline graphs through geo-references and time-references, to enrich the analogue materials with multimedia digital data, and enable user interactions and dynamic visualization of the enriched data on digital devices for re...
Proceedings of the 2007 Euro American conference on Telematics and information systems, 2007
The goal of our research is to support the sharing of stories with digital photographs. Some map ... more The goal of our research is to support the sharing of stories with digital photographs. Some map sites are now collecting stories associated with peoples' relationships to places. Users are mapping collections of places including intangible emotional associations of places along with photographs, videos. Though this framework of mapping stories is important for accelerating individual creation and transmission of map
Different types of maps have specific, limited functions, and to satisfy user requirements under ... more Different types of maps have specific, limited functions, and to satisfy user requirements under various situations, combinations of types are required. With the development and popularization of mapping applications on mobile devices, efforts have been made to integrate analogue maps with location-based services (LBSs). Previous work in this area has mainly used points as georeferences to calculate positions on map images, but point-based geocoding does not achieve accurate and stable positioning results. This paper introduces a map signboard collage system (MSCS) to enable LBSs using copied images of multiple map signboards on smartphones. The system uses polylines as georeferences, improving the accuracy and stability of positioning results, and supports automatic egocentralization of map images with compass sensors in smartphones. In addition, it collages multiple maps to allow natural, smooth and dynamic map switching for inter-map navigation.
Proceedings of the 16th ACM international conference on Multimedia, 2008
... Without explicitly setting values other than private to the attribute Shared group, the blo... more ... Without explicitly setting values other than private to the attribute Shared group, the blog entry never becomes public. ... Thus, we can submit a blog entry to plog through email using GPS integrated mobile phone cameras. ...
Cartographica: The International Journal for Geographic Information and Geovisualization, 2013
Although commercial Web mapping is popular now, illustrated maps are widely used in print media a... more Although commercial Web mapping is popular now, illustrated maps are widely used in print media and have advantages. The immeasurable distortions of illustrated maps create difficulties when applying them in location-based services. Based on previous research, the authors propose an improved framework for supporting illustrated maps to be integrated with GPS functions in smartphones, and positioning methods are discussed. Mobile tools and applications have been developed with the purpose of making it easy to create and use digital content based on illustrated maps for walking tours. The usability and effectiveness were tested in experiments and practical use.
This paper proposes a model-less feedback system driven by tourist tracking data that are automat... more This paper proposes a model-less feedback system driven by tourist tracking data that are automatically collected through mobile applications to visualize the gap between geomedia recommendations and the actual routes selected by tourists. High-frequency GPS data essentially make it difficult to interpret the semantic importance of hot spots and the presence of street-level features on a density map. Our mobile collaborative framework reorganizes tourist trajectories. This processing comprises (1) extracting the location of the user-generated content (UGC) recording, (2) abstracting the locations where tourists stay, (3) discarding locations where users remain stationary, and (4) simplifying the remaining points of location. Then, our heatmapping system visualizes heatmaps for hot streets, UGC-oriented hot spots, and indoor-oriented hot spots. According to our experimental study, this method can generate a trajectory that is more adaptable for hot street visualization than the raw t...
2018 22nd International Conference Information Visualisation (IV)
Octilinear network layouts are commonly used as the schematic representation of railway maps due ... more Octilinear network layouts are commonly used as the schematic representation of railway maps due to their enhanced readability. However, it is often time-consuming to place station names on such railway maps by trial and error, especially within the limited labeling space around interchange stations. This paper presents a progressive approach to placing station names around stations in schematic railway maps for better automation of map labeling processes. The idea behind our approach is to annotate stations in dense downtown areas around the interchange stations first and then those in sparse rural areas. This is achieved by introducing the sum of geodesic distances over the railway network to identify the proper order in which to annotate stations. In the actual annotation process, we increase the labeling space around the railway network when necessary by progressively stretching railway line segments while retaining their original directions, which allows us to respect the original schematic layout as much as possible. We present several experimental results to demonstrate the effectiveness of the proposed approach, together with a discussion on parameter tuning in our formulation.
Nowadays, there is an explosion of spatio-temporal data, such as big data of human movements and ... more Nowadays, there is an explosion of spatio-temporal data, such as big data of human movements and aerial photographs taken in time series. Interactive and dynamic visualization of such data play important roles in researching and applications in the fields of traffic controlling, education, storytelling and so on. On the other hand, besides of the “modern” digital data, there are also large amount of “traditional” analogue data in the forms of maps, books, photographs and so on. Such analogue materials are valuable for historical researches and education, but current spatio-temporal visualization systems are not good at dealing such analogue materials compared to their performances on digital data. This paper introduces our research on collaging analogue maps and timeline graphs through geo-references and time-references, to enrich the analogue materials with multimedia digital data, and enable user interactions and dynamic visualization of the enriched data on digital devices for re...
Proceedings of the 2007 Euro American conference on Telematics and information systems, 2007
The goal of our research is to support the sharing of stories with digital photographs. Some map ... more The goal of our research is to support the sharing of stories with digital photographs. Some map sites are now collecting stories associated with peoples' relationships to places. Users are mapping collections of places including intangible emotional associations of places along with photographs, videos. Though this framework of mapping stories is important for accelerating individual creation and transmission of map
Different types of maps have specific, limited functions, and to satisfy user requirements under ... more Different types of maps have specific, limited functions, and to satisfy user requirements under various situations, combinations of types are required. With the development and popularization of mapping applications on mobile devices, efforts have been made to integrate analogue maps with location-based services (LBSs). Previous work in this area has mainly used points as georeferences to calculate positions on map images, but point-based geocoding does not achieve accurate and stable positioning results. This paper introduces a map signboard collage system (MSCS) to enable LBSs using copied images of multiple map signboards on smartphones. The system uses polylines as georeferences, improving the accuracy and stability of positioning results, and supports automatic egocentralization of map images with compass sensors in smartphones. In addition, it collages multiple maps to allow natural, smooth and dynamic map switching for inter-map navigation.
Proceedings of the 16th ACM international conference on Multimedia, 2008
... Without explicitly setting values other than private to the attribute Shared group, the blo... more ... Without explicitly setting values other than private to the attribute Shared group, the blog entry never becomes public. ... Thus, we can submit a blog entry to plog through email using GPS integrated mobile phone cameras. ...
Cartographica: The International Journal for Geographic Information and Geovisualization, 2013
Although commercial Web mapping is popular now, illustrated maps are widely used in print media a... more Although commercial Web mapping is popular now, illustrated maps are widely used in print media and have advantages. The immeasurable distortions of illustrated maps create difficulties when applying them in location-based services. Based on previous research, the authors propose an improved framework for supporting illustrated maps to be integrated with GPS functions in smartphones, and positioning methods are discussed. Mobile tools and applications have been developed with the purpose of making it easy to create and use digital content based on illustrated maps for walking tours. The usability and effectiveness were tested in experiments and practical use.
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