Automated Generation Of Geometrically Precise And Semantically Informed Virtual Geographic Environments Populated With Spatially Reasoning Agents
DOWNLOAD
Download Automated Generation Of Geometrically Precise And Semantically Informed Virtual Geographic Environments Populated With Spatially Reasoning Agents PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Automated Generation Of Geometrically Precise And Semantically Informed Virtual Geographic Environments Populated With Spatially Reasoning Agents book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Automated Generation Of Geometrically Precise And Semantically Informed Virtual Geographic Environments Populated With Spatially Reasoning Agents
DOWNLOAD
Author : Mehdi Mekni
language : en
Publisher: Universal-Publishers
Release Date : 2010-10-29
Automated Generation Of Geometrically Precise And Semantically Informed Virtual Geographic Environments Populated With Spatially Reasoning Agents written by Mehdi Mekni and has been published by Universal-Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-10-29 with categories.
Multi-Agent Geo-Simulation (MAGS) is a modelling paradigm which has attracted a growing interest from researchers and practitioners for the study of various phenomena in a variety of domains such as traffic simulation, urban dynamics, environment monitoring, as well as changes of land use and cover, to name a few. These phenomena usually involve a large number of simulated actors (implemented as software agents) evolving in, and interacting with, an explicit spatial environment representation commonly called Virtual Geographic Environment (VGE). Since a geographic environment may be complex and large-scale, the creation of a VGE is difficult and needs large quantities of geometrical data originating from the environment characteristics (terrain elevation, location of objects and agents, etc.) as well as semantic information that qualifies space (building, road, park, etc.). CurrentMAGS approaches usually consider the environment as a monolithic structure, which considerably reduces the capacity to handle largescale, real world geographic environments as well as agent's spatial reasoning capabilities. Moreover, the problem of path planning in MAGS involving complex and large-scale VGEs has to be solved in real time, often under constraints of limited memory and CPU resources. Available path planners provide agents with obstacle-free paths between two located positions in the VGE, but take into account neither the environment's characteristics (topologic and semantic) nor the agents' types and capabilities. In addition, agents evolving in a VGE lack for mechanisms and tools that allow them to acquire knowledge about their virtual environment in order to make informed decisions. In this thesis, we propose a novel approach to automatically generate a semantically-enriched and geometrically-precise representation of the geographic environment that we call Informed Virtual Geographic Environment (IVGE). Our IVGE model efficiently organizes the geographic features, precisely captures the real world complexity, and reliably represents large-scale geographic environments. We also provide a new hierarchical path planning algorithm which leverages the enriched description of the IVGE in order to support agents' reasoning capabilities while optimising computation costs and taking into account both the virtual environment's characteristics and the agents' types and capabilities. Finally, we propos an environment knowledge management approach to support the agents' spatial decision making process while interacting with the IVGE.
Motion In Games
DOWNLOAD
Author : Jan Allbeck
language : en
Publisher: Springer
Release Date : 2011-11-08
Motion In Games written by Jan Allbeck and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-11-08 with Computers categories.
This book constitutes the proceedings of the 4th International Workshop on Motion in Games, held in Edinburgh, UK, in November 2011. The 30 revised full papers presented together with 8 revised poster papers in this volume were carefully reviewed and selected from numerous submissions. The papers are organized in topical sections on character animation, motion synthesis, physically-based character motion, behavior animation, animation systems, crowd simulation, as well as path planning and navigation.
Informed Virtual Geospatial Environments
DOWNLOAD
Author : Mehdi Mekni
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2013
Informed Virtual Geospatial Environments written by Mehdi Mekni and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
In order to enable agents to interact with their virtual environment, it is important to provide an explicit representation of the geographic environment in which agents evolve. Such a description should provide agents with quantitative and qualitative information in order to extend their knowledge about their environment and to let them reason about it in order to achieve their goals. This description should include (1) the geometric characteristics; (2) the topological features; and (3) the semantic information which qualifies and characterize the spatial environment. This book presents the state of the art of the generation of explicit representations of geospatial environments. It also outlines the complexity to generate virtual geospatial environments. Finally, it proposes and details a novel approach to automatically generate geometrically-precise and semantically-enriched informed virtual geospatial environments.
Spatial Reasoning And Planning
DOWNLOAD
Author : Jiming Liu
language : en
Publisher: Springer Science & Business Media
Release Date : 2003-12-04
Spatial Reasoning And Planning written by Jiming Liu and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-12-04 with Computers categories.
Spatial reasoning and planning is a core constituent in robotics, graphics, computer-aided design, and geographic information systems. After a review of previous work in the related areas, Liu and Daneshmend present a unified framework for qualitative spatial representation and reasoning. This paves the way for a generation of solutions to spatial problems where the geometric knowledge is imprecise. Many graphical illustrations and detailed algorithm descriptions help the reader to comprehend the solution paths and to develop their own applications. The book is written as a self-contained text for researchers and graduate students. The methodologies, algorithmic details, and case studies presented can be used as course material as well as a convenient reference.
Spatial Cognition V
DOWNLOAD
Author : Thomas Barkowsky
language : en
Publisher: Springer
Release Date : 2007-11-16
Spatial Cognition V written by Thomas Barkowsky and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-11-16 with Computers categories.
This book constitutes the refereed proceedings of the International Conference on Spatial Cognition, Spatial Cognition 2006. It covers spatial reasoning, human-robot interaction, visuo-spatial reasoning and spatial dynamics, spatial concepts, human memory, mental reasoning and assistance, spatial concepts, human memory and mental reasoning, navigation, wayfinding and route instructions as well as linguistic and social issues in spatial knowledge processing.
Spatial And Temporal Reasoning
DOWNLOAD
Author : O. Stock
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-07-27
Spatial And Temporal Reasoning written by O. Stock and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-07-27 with Language Arts & Disciplines categories.
Qualitative reasoning about space and time - a reasoning at the human level - promises to become a fundamental aspect of future systems that will accompany us in daily activity. The aim of Spatial and Temporal Reasoning is to give a picture of current research in this area focusing on both representational and computational issues. The picture emphasizes some major lines of development in this multifaceted, constantly growing area. The material in the book also shows some common ground and a novel combination of spatial and temporal aspects of qualitative reasoning. Part I presents the overall scene. The chapter by Laure Vieu is on the state of the art in spatial representation and reasoning, and that by Alfonso Gerevini gives a similar survey on research in temporal reasoning. The specific contributions to these areas are then grouped in the two main parts. In Part II, Roberto Casati and Achille Varzi examine the ontological status of spatial entities; Anthony Cohn, Brandon Bennett, John Gooday, and Nicholas Gotts present a detailed theory of reasoning with qualitative relations about regions; Andrew Frank discusses the spatial needs of geographical information systems; and Annette Herskovits focuses on the linguistic expression of spatial relations. In Part III, James Allen and George Ferguson describe an interval temporal logic for the representation of actions and events; Drew McDermott presents an efficient way of predicting the outcome of plan execution; and Erik Sandewall introduces a semantics based on transitions for assessing theories of action and change. In Part IV, Antony Galton's chapter stands clearly between the two areas of space and time and outlines the main coordinates of an integrated approach.
Mapping And Spatial Modelling For Navigation
DOWNLOAD
Author : Louis F. Pau
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Mapping And Spatial Modelling For Navigation written by Louis F. Pau and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Computers categories.
The successful implementation of applications in spatial reasoning requires paying attention to the representation of spatial data. In particular, an integrated and uniform treatment of different spatial features is necessary in order to enable the reasoning to proceed quickly. Currently, the most prevalent features are points, rectangles, lines, regions, surfaces, and volumes. As an example of a reasoning task consider a query of the form "find all cities with population in excess of 5,000 in wheat growing regions within 10 miles of the Mississippi River. " Note that this query is quite complex. It requires- processing a line map (for the river), creating a corridor or buffer (to find the area within 10 miles of the river), a region map (for the wheat), and a point map (for the cities). Spatial reasoning is eased by spatially sorting the data (i. e. , a spatial index). In this paper we show how hierarchical data structures can be used to facilitate this process. They are based on the principle of recursive decomposition (similar to divide and conquer methods). In essence, they are used primarily as devices to sort data of more than one dimension and different spatial types. The term quadtree is often used to describe this class of data structures. In this paper, we focus on recent developments in the use of quadtree methods. We concentrate primarily on region data. For a more extensive treatment of this subject, see [SameS4a, SameSSa, SameSSb, SameSSc, SameSga, SameSgbj.
Spatial Cognition Ii
DOWNLOAD
Author : Christian Freksa
language : en
Publisher: Springer Science & Business Media
Release Date : 2000-05-24
Spatial Cognition Ii written by Christian Freksa and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-05-24 with Computers categories.
This book constitutes the second volume documenting the results achieved within a priority program on spatial cognition by the German Science Foundation (DFG). The 28 revised full papers presented were carefully reviewed and reflect the increased interdisciplinary cooperation in the area. The book is divided into sections on maps and diagrams, motion and spatial reference, spatial relations and spatial inference, navigation in real and virtual spaces, and spatial memory.
Theories And Methods Of Spatio Temporal Reasoning In Geographic Space
DOWNLOAD
Author : Andrew U. Frank
language : en
Publisher: Springer
Release Date : 1992-09-09
Theories And Methods Of Spatio Temporal Reasoning In Geographic Space written by Andrew U. Frank and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-09-09 with Computers categories.
This volume collects the papers presented at the first international conference dedicated to spatial and temporal reasoning in geographic space, entitled "GIS: from space to territory - theories and methods of spatio-temporal reasoning". Within the National Center for Geographic Information and Analysis (NCGIA, one of the supporters of the conference) the importance of spatial and temporal reasoning was recognized several years ago. Initial research found that spatial reasoning in geographic or large-scale space is different from spatial reasoning in small-scale space, as usually dealt with in robotics and expertsystems. Temporal reasoning has attracted interest in the artificial intelligence community. The volume also includes two invited papers: "Do people understand spatial concepts: the case of first-order primtives" by R.G. Golledge, and "Temporal databases" by R.T. Snodgrass.
Spatial Multimedia And Virtual Reality
DOWNLOAD
Author : Antonio S. Camara
language : en
Publisher: CRC Press
Release Date : 2021-04-29
Spatial Multimedia And Virtual Reality written by Antonio S. Camara and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-29 with Computers categories.
The intersection of two disciplines and technologies which have become mature academic research topics in the 1990s was destined to be a dynamic area for collaboration and publication. However, until now no significant book-length treatment of the meeting of GIS and Virtual Reality has been available. This volume puts that situation to rights by bringing these together to cement some common understanding and principles in a potentially highly promising area for technological collaboration and cross-fertilisation. The result is a volume which ranges in subject matter from studies of a Virtual GIS Room to Spatial Agents, and from an Environmental Multimedia System to Computer-Assisted 3D Geographic Education. All the contributors are well-known international scientists, principally from the computational side of GIS. It will be a valuable resource for any GIS researcher or professional looking to understand the leading edge of this fertile field.