We present a method to represent multi-resolution vector graphics such as road networks or railway networks in virtual environment. These vector data can be interactively edited and the landscape and be explored in re...We present a method to represent multi-resolution vector graphics such as road networks or railway networks in virtual environment. These vector data can be interactively edited and the landscape and be explored in real time at any altitude from flight view to car view. We design a context-focused vector description of linear can areal features, with associated customized definition painter to specify their appearance （color and material） and their display mode （detailed mode or simplified mode）. There are some special problems in drawing vector graphics in virtual environment. Floating-point round-off error appear when we use a low view point to observe the scene, and it leads to scene jittering. Drawing 3D wide lines turns into a problem on 3D terrain. We design a view-based self-adaptive interpolation algorithm and an offset line generating algorithm to solve it. Our results show high performance with good visual quality.展开更多
The web of meso-scale meteorological observational station based on WebGIS realized by SVG technology was briefly introduced.Through grasping and applying SVG technology,the high-density automatic observational statio...The web of meso-scale meteorological observational station based on WebGIS realized by SVG technology was briefly introduced.Through grasping and applying SVG technology,the high-density automatic observational station in Anhui Province was developed.The web of meso-scale meteorological observational stations constructed by SVG technique can display the network graphics of weather data and intuitionistic vector graphics interface.展开更多
Paper-cut is one of the oldest folk arts of Han nationality, to give people visual space through feeling and artistic enjoyment. With the development of modernization, the number of person who inherits or understands ...Paper-cut is one of the oldest folk arts of Han nationality, to give people visual space through feeling and artistic enjoyment. With the development of modernization, the number of person who inherits or understands the intangible cultural heritage is dwindling. Hence, we need a new form to inheritance this art urgently. Based on augmented reality technology, we achieve the real-time calculation of image position and angle, the exhibition of the corresponding virtual scene in this paper. Users can achieve the virtual interaction in reality, thus, multi-dimensional experience of paper-cut is provided for users.展开更多
基金Supported by National Basic Research Program of China (973 Program,No.2010CB328002)National Natural Science Foundation of China (Nos.61232014,61121002,61173080)National Key Technology Research and Development Program of China (No.2013BAK03B07)
文摘We present a method to represent multi-resolution vector graphics such as road networks or railway networks in virtual environment. These vector data can be interactively edited and the landscape and be explored in real time at any altitude from flight view to car view. We design a context-focused vector description of linear can areal features, with associated customized definition painter to specify their appearance （color and material） and their display mode （detailed mode or simplified mode）. There are some special problems in drawing vector graphics in virtual environment. Floating-point round-off error appear when we use a low view point to observe the scene, and it leads to scene jittering. Drawing 3D wide lines turns into a problem on 3D terrain. We design a view-based self-adaptive interpolation algorithm and an offset line generating algorithm to solve it. Our results show high performance with good visual quality.
基金Supported by Anhui Meteorological Observatory Projects " Integration Design of Station Meteorological Observation Operation"
文摘The web of meso-scale meteorological observational station based on WebGIS realized by SVG technology was briefly introduced.Through grasping and applying SVG technology,the high-density automatic observational station in Anhui Province was developed.The web of meso-scale meteorological observational stations constructed by SVG technique can display the network graphics of weather data and intuitionistic vector graphics interface.
基金Supported by Gansu Science and Technology Major Project(1302FKDA036)Natural Science Fund Project in Xinjiang(2014211A046)
文摘Paper-cut is one of the oldest folk arts of Han nationality, to give people visual space through feeling and artistic enjoyment. With the development of modernization, the number of person who inherits or understands the intangible cultural heritage is dwindling. Hence, we need a new form to inheritance this art urgently. Based on augmented reality technology, we achieve the real-time calculation of image position and angle, the exhibition of the corresponding virtual scene in this paper. Users can achieve the virtual interaction in reality, thus, multi-dimensional experience of paper-cut is provided for users.
