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Last name: ARYAL
First name: Jagannath
International audience
Natural images, which are filled with intriguing stimuli of spatial objects, represent our cognition and are rich in spatial information. Accurate extraction of spatial objects is challenging due to the associated spatial and spectral complexity. In this paper, we tackle the problem of spatial object extraction in a GEOgraphic Object Based...
International audience
The Modifiable Areal Unit Problem (MAUP) is a well-known issue relatedto the influence of the spatial support on statistical observations. It occurs whendifferent spatial units making different spatial partitions are used and when the resultingmeasures vary according to those partitions. In this paper, we first draw a stateof the art....
Using the R language as a GIS applied on forest fire data in South of France, the goal of the research is to emphasize how spatial statistics may depend on the areal units chosen. First, we propose to map the forest fire data at different scale levels based on administrative boundaries. Second, we measure the MAUP by showing scale sensitivity...
In this paper, the authors present a methodology to solve the weighted barycenter problem when the data is inherently fuzzy. This method, from data clustered by expert visual inspection of maps, calculates bi-dimensional fuzzy numbers from the spatial clusters, which in turn are used to obtain the weighted fuzzy barycenter of a particular area....
We developed an algorithm for reducing geometric differences between source and target dataset.The algorithm tackles the polygon overlay problem in electoral geography before using areal in-terpolation methods. Our results show that improvement in matching between statistical areas andpolling areas can reduce up to half of areal interpolation...