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虚实融合技术是视频增强三维虚拟地理场景的关键环节之一,对提高真实沉浸式视觉体验具有重要作用。现有基于视频投影的虚实融合方法,在三维场景动态更新时,通常需要对用户视角下新场景内所有渲染对象进行遍历,来筛选出摄像头范围内需融合的对象,导致融合过程耗时长、效率不高。本文提出一种顾及拓扑关系的多路视频与三维GIS场景融合的对象快速确定方法。首先对三维场景视锥体内视频对象集渲染对象动态建立拓扑网络模型;然后...
2016年11月25至28日,第八届全国地图学与GIS学术大会在南京师范大学举行。本届大会由中国测绘地理信息学会地图学与GIS专业委员会、中国地理学会地图学与GIS专委会、中国地理信息产业协会地图工作委员会、中国地质学会地质制图与地理信息专委会、中国自然资源学会资源制图专委会五家联合主办,由南京师范大学及省遥感与GIS学会、省测绘地理信息学会、省地理信息资源开发与利用协同创新中心、虚拟地理环境教育...
This research is concerned with the GIS based mapping and change of areal extent of wetlands within two different periods and to identify the causes of change and impact assessment of wetland chan...
Jharkhali, an island in the Sundarbans, is situated between two mighty rivers, Matla (on the west) and Bidya (on the east) covering an area of about 161 sq.km (2009). The landuse / landcover maps ...
In the present study, the eighteen miniwatersheds of Kadam watershed of Middle Godavari sub basin (G-5) have been prioritized using GIS based on morphometric analysis. The highest Bifurcation rati...
Proper planning and management of available natural resources is necessary for progress and economic development in agriculture which are main stay of people leaving in the hilly region. The morph...
The growing competition demand for water from industrial, domestic, and environmental sectors, along with increasing intensity of quality and quantity challenges as a result of rapid urbanization,...
Temporal land cover changes have a strong effect on the urban environment and its surroundings. In the present study, Delhi metropolitan area has been considered for the detection of land cover ch...
With passage of time, Land use and Land cover (LULC) of coastal area undergoes significant change due to varying natural and anthropogenic causes. So it is essential to monitor the changes in land...
Remote Sensing and Geographical Information System has emerged as the most important tool of a geographer to handle spatial data. This technique is now widely used around the world to analyse phys...
Duhok, a mountainous city in Kurdistan Region of Iraq, has witnessed rapid urban growth over the past decade due to population growth and economic improvements. These factors have placed a great p...
This research work has been carried out to assess the impact and effectiveness of watershed management practices on land use land cover of the Seoni watershed area with the help of satellite remot...
The term land use relates to the human activities or economic functions associated with a specific piece of land while land cover is the physical material at the surface of the earth. Land cover i...
Nowadays, GIS is widely recognized as a valuable decision support system that enables the determination of suitable spatial locations for a specific objective based on a group of criteria. This pa...

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