The Compact High Resolution Imaging Spectrometer (CHRIS) mounted onboard the Project for Onboard Autonomy (PROBA) spacecraft is capable of sampling reflected radiation at five viewing angles over the visible and near-infrared regions of the solar spectrum with high spatial resolution. We combined the spectral domain with the angular domain of CHRIS data in order to map the surface heterogeneity...

We consider a set of static towers with communication capabilities, but not within range of each other, i.e., sparsely positioned in an environment with obstacles that degrade the communication signal, e.g., emergency teams in areas where connectivity has been lost. We address the problem of deploying mobile robots, initially not necessarily within range of each other or of the static towers, t...

Simultaneous localization and mapping (SLAM) is required for mobile robots to be able to explore a prior unknown space without a global positioning reference. Multiple robots can achieve exploration tasks more quickly, but with added complexity. A useful representation of the map for SLAM purposes is as an occupancy grid map. In the most general case of multiple robot SLAM, occupancy grid maps ...

At the merging point, vehicles on the main road must reduce their velocity to avoid slow merging vehicles from a branch road, which leads to a traffic jam. Some researchers point out the effectiveness of a zipper merging pattern for improving the traffic near the merging point. In this study, the authors discuss the effectiveness of a zipper merging pattern using cellular automata simulation. F...

This paper proposes a novel approach to merging DL-Lite ontologies by utilising an alternative semantic characterisation instead of classical DL models. The new merging process consists of two operators (TBox merging and ABox merging). These operators satisfy several desirable properties for merging, which in turn demonstrates the suitability of the new approach to DL-Lite merging. It is shown ...

this paper presents, a hybrid method, low-resolution and high-resolution, for persian page segmentation. in the low-resolution page segmentation, a pyramidal image structure is constructed for multiscale analysis and segments document image to a set of regions. by high-resolution page segmentation, by connected components analysis, each region is segmented to homogeneous regions and identifying...

This paper deals with Chinese, English and Japanese multilingual information retrieval. Several merging strategies, including raw-score merging, round-robin merging, normalized-score merging, and normalizedby-top-k merging, were investigated. Experimental results show that centralized approach is better than distributed approach. In distributed approach, normalized-by-top-k with consideration o...