A multi-agent System Approach for Feature-driven Generalization of isobathymetric Line

Zhang, Xunruo; Guilbert, Éric

doi:10.1007/978-3-642-19143-5_27

Cited by 20 publications

(24 citation statements)

References 9 publications

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“…Specific generalisation constraints and operators can be defined with consideration of terrain features. These sets of constraints and operators can be worked out at different levels: operators that apply either to the contours or to the features [30]. Analysis of terrain features can also be undertaken to estimate the quality of a generalisation by measuring the amount of information preserved on different maps [2].…”

Section: Discussionmentioning

confidence: 99%

Multi-level representation of terrain features on a contour map

Guilbert

2012

Geoinformatica

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Contour lines are important for quantitatively displaying relief and identifying morphometric features on a map. Contour trees are often used to represent spatial relationships between contours and assist the user in analysing the terrain. However, automatic analysis from the contour tree is still limited as features identified on a map by sets of contours are not only characterised by local relationships between contours but also by relationships with other features at different levels of representation. In this paper, a new method based on adjacency and inclusion relationships between regions defined by sets of contours is presented. The method extracts terrain features and stores them in a feature tree providing a description of the landscape at multiple levels of detail. The method is applied to terrain analysis and generalisation of a contour map by selecting the most relevant features according to the purpose of the map. Experimental results are presented and discussed.

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Section: Discussionmentioning

confidence: 99%

Multi-level representation of terrain features on a contour map

Guilbert

2012

Geoinformatica

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“…Prominence extent is then defined by the largest contour containing the summit and no other higher point. A data structure storing terrain features at multiple levels which does not require the DTM is proposed by Zhang and Guilbert (2011). Features are defined by groups of contours forming a feature tree ( Figure 2).…”

Section: Feature Representation On a Contour Mapmentioning

confidence: 99%

“…Constraints are not expressed only at the local level but also at more global levels on larger features. Topological relationships between contours can be recorded in a contour tree however more global information about the terrain morphology at different levels is described in the feature tree (Zhang and Guilbert, 2011) which records topological relationships between features modelled by contours.…”

Section: Generalisation Constraints and Operationsmentioning

confidence: 99%

“…A multi-agent system for isobath generalisation was introduced by Zhang and Guilbert (2011). Following the approach developed by Ruas (1999), map objects are defined as two different types of agents: isobaths are micro-agents and features formed by groups of isobaths are meso-agents.…”

Section: The Multi Agent Systemmentioning

confidence: 99%

“…Each type of agent has its own constraints, evaluation methods detecting conflicts and operators performing generalisation actions. Zhang and Guilbert (2011) detail a list of constraints and actions for both types of agent and discuss the interest of the approach for feature-driven generalisation but plan evaluation and communication between agents are not addressed.…”

Section: The Multi Agent Systemmentioning

confidence: 99%

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Generalisation of Submarine Features on Nautical Charts

Guilbert

Zhang

2012

ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:On most large scale and middle scale maps, relief is represented by contours and spot heights. In order to adapt the representation to the scale, the terrain is generalised either by smoothing or filtering the terrain model or by simplifying the contours. However this approach is not applicable to nautical chart construction where terrain features are selected according to their importance for navigation. This paper presents an approach for the consideration of feature attributes in the generalisation of a set of contours with respect to nautical chart constraints. Features are defined by sets of contours and a set of generalisation operators applied to features is presented. The definitions are introduced in a multi-agent system in order to perform automatic generalisation of a contour set. Results are discussed on a case study and directions for future work are presented.

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