東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Sketching spatial queries.

Blaser, Andreas D.

FindBook

Google Book

Amazon

博客來

Sketching spatial queries.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Sketching spatial queries./
作者:	Blaser, Andreas D.
面頁冊數:	199 p.
附註:	Source: Dissertation Abstracts International, Volume: 61-05, Section: A, page: 1661.
Contained By:	Dissertation Abstracts International61-05A.
標題:	Information Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9972138
ISBN:	0599774142

Sketching spatial queries.
Blaser, Andreas D.

Sketching spatial queries. - 199 p.

Source: Dissertation Abstracts International, Volume: 61-05, Section: A, page: 1661.

Thesis (Ph.D.)--The University of Maine, 2000.

Sketching, and in particular freehand sketching is a very old form of communication that has been used to visualize, store, and exchange information for thousands of years. However, and despite its expressiveness it has not yet become a frequently used modality to interact with computer systems. Geographic Information Systems (GISs) have a particular need for such advanced forms of interaction, because they involve complex and heterogeneous data structures, with an accentuated geo-spatial component. Within this scope, this thesis attempts to develop concepts and fundamental theories that make sketching useful for applications in the GISs domain.

ISBN: 0599774142Subjects--Topical Terms:

1017528
Information Science.

Sketching spatial queries.
LDR:03057nmm 2200313 4500 001 1818960
005 20060920092644.5
008 130610s2000 eng d
020 $a 0599774142
035 $a (UnM)AAI9972138
035 $a AAI9972138
040 $a UnM $c UnM
100 1 $a Blaser, Andreas D. $3 1908263
245 1 0 $a Sketching spatial queries.
300 $a 199 p.
500 $a Source: Dissertation Abstracts International, Volume: 61-05, Section: A, page: 1661.
500 $a Adviser: Max J. Egenhofer.
502 $a Thesis (Ph.D.)--The University of Maine, 2000.
520 $a Sketching, and in particular freehand sketching is a very old form of communication that has been used to visualize, store, and exchange information for thousands of years. However, and despite its expressiveness it has not yet become a frequently used modality to interact with computer systems. Geographic Information Systems (GISs) have a particular need for such advanced forms of interaction, because they involve complex and heterogeneous data structures, with an accentuated geo-spatial component. Within this scope, this thesis attempts to develop concepts and fundamental theories that make sketching useful for applications in the GISs domain.
520 $a To evaluate the practicability of sketching for modern human-computer interaction we have analyzed the process of interaction on different levels and from various perspectives. The interpretation of a survey that required human subjects to draw sketches according to written scenarios provided valuable information about people's sketching habits and strategies. Based on these observations we have developed a formal model of a sketch. The basic building blocks of this model are sketched objects and a subset of relevant, binary spatial relations. This subset is obtained by considering only relations between objects that are Voronoi neighbors. Relations are based on the topology, metric, and direction relationship between object pairs. Objects are described by geometric attributes. To prove our concepts we have implemented a software prototype of a sketch-based query user interface for GISs. This application can be used to draw sketches and query them against a simple, sketch database. The result is a ranked list of sketches that are conceptually similar to the sketched query.
520 $a We have observed that people use fairly simple and abstract objects in their sketches and we have shown that it is feasible to interpret and translate a sketched scene into a form that can be used to query a spatial database. We can, therefore, expect that sketching is an expressive modality and a realistic enhancement for applications where spatial information has to be browsed, queried, or updated, such as in a GIS.
590 $a School code: 0113.
650 4 $a Information Science. $3 1017528
650 4 $a Computer Science. $3 626642
650 4 $a Engineering, General. $3 1020744
690 $a 0723
690 $a 0984
690 $a 0537
710 2 0 $a The University of Maine. $3 1029373
773 0 $t Dissertation Abstracts International $g 61-05A.
790 1 0 $a Egenhofer, Max J., $e advisor
790 $a 0113
791 $a Ph.D.
792 $a 2000
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9972138