Development of Automatic Mapping Algorithm using CCTV Information based on Geo-spatial Information

Rough Set Framework for Geo-Spatial Information

Geospatial information we gather through different sensors and from the concepts of the geographic objects, is generally vague, imprecise and uncertain. Also, the imprecision becomes obvious due to the multi-granular structure of the multi-sensor satellite images and that leads to error accumulation at every stage in geo-processing. It has been observed that the ground truth data, forming a pri...

Letters on Geo graphic Information Retrieval Geo graphic Information Retrieval

Urban Geo-spatial Information Updating Technology

The present situation is a life of basic geographic information. Only when basic geographic information has to renew continuously can it reflect truly the present situation of the nature and cultural features. On the base of deep studying, this paper provides the practical solution of the urban geo-spatial information updating quickly facing the rapid development of our country city building. T...

An Efficient Scheme for PAPR Reduction of OFDM based on Selected Mapping without Side Information

Orthogonal frequency division multiplexing (OFDM) has become a promising method for many wireless communication applications. However, one main drawback of OFDM systems is the high peak-to-average power ratio (PAPR). Selected mapping (SLM) is a well-known technique to decrease the problem of high PAPR in OFDM systems. In this method, transmitter is obliged to send some bits named side informati...

Model Driven Geo-Information System's Development

Continuous change of user requirements has become a constant for geo-information systems. Designing systems that can adapt to such changes requires an appropriate design methodology that supports abstraction, modularity and other mechanisms to capture the essence of the system and help controlling complexity. An important factor in the conceptual modelling of information systems is to describe ...