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Space for water is now becoming guiding principle of urban planning because urban flooding is the major problem facing by most of the cities in India. Urban development in developing countries like In...
针对2D/3D点包含判定方法的复杂和低效问题,提出基于点圆理论的方法:分类描述奇异情形在点圆中的投影、叠加特征及判定方法,将3D点包含测试转换为与2D点包含测试一致的算法(除子平面方程系数计算外)。筛选和累加与射线相交的射线以上或以下的线段,据此奇偶性判定3D或2D点包含;解析2D射线与多边形相交连续线段内节点的几何特征,即y坐标要么都大于、要么都小于测试点,构建高效2D点包含增量筛选射线法。实验...
Accurate measurements of 3D scenes and change detection of spatial distributed data are of great importance in different areas of research and application. For more accurate data analysis it is useful...
The demand for indoor navigation is increasingly urgent in many applications such as safe management of underground spaces or location services in complex indoor environment, e.g. shopping centres, ai...
The paper is dealing with scanpath comparison of eye-tracking data recorded during case study focused on the evaluation of 2D and 3D city maps. The experiment contained screenshots from three map port...
This paper presents the results of an exploratory user study using 2D maps to observe and analyse the effect of street name changes on prospective route planning. The study is part of a larger researc...
In the frame of its earth observation missions, CNES created a library called QPEC, and one of its launcher called Medicis. QPEC / Medicis is a sub-pixel two-dimensional stereo matching algorithm that...
When we map an area or create a digital database for it, the first task is often to partition the space into smaller units.There are traditionally two methods of partition called vector and raster. A ...
Change detection with very high resolution imagery is difficult, because 3D objects as buildings appear differently in 2D imagery due to varying viewing angles and sun positions. This research propose...
On analysis of existing images mosaicing methods, the conception of mosaicing graph is introduced and some principles to construct high quality panorama are presented in the paper. Image registration...
In the past few years, 2D topographic databases have been completed in most industrialised countries. Most efforts in National Mapping and Cadastral Agencies (NMCAs) are now devoted to the update of s...
Representation of data on the sphere is conventionally done using spherical harmonics. Making use of the Fourier series of the Legendre function in the SH representation results in a 2D Fourier expres...
This paper describes the concepts and the successful prototypal implementation of interactively connected 2D information visualizations and data displays in 3D virtual environments for the interactive...
In the last twenty-five years a great number of vectorization methods were developed. In this paper we first give an overview about the most known methods, and then propose a vectorization algorithm b...
The paper describes an approach for the automatical reconstruction of homogeneous straight stairs from point cloud data by using a generative model and Markov Chain Monte Carlo techniques for estima...

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