The dynamic HomeFinder: evaluating dynamic queries in a real-estate information exploration system
SIGIR '92 Proceedings of the 15th annual international ACM SIGIR conference on Research and development in information retrieval
Interactive sketching for the early stages of user interface design
CHI '95 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
A visual language for querying spatio-temporal databases
Proceedings of the 7th ACM international symposium on Advances in geographic information systems
Visualization in an early stage of the problem-solving process in GIS
Computers & Geosciences
Integrated spatial and feature image query
Multimedia Systems
VL '96 Proceedings of the 1996 IEEE Symposium on Visual Languages
A visual language for color-based painting retrieval
VL '96 Proceedings of the 1996 IEEE Symposium on Visual Languages
Distributed architectures for pen-based input and diagram recognition
AVI '96 Proceedings of the workshop on Advanced visual interfaces
A pictorial query language for geographical databases
AVI '96 Proceedings of the workshop on Advanced visual interfaces
Automatic construction of user interfaces for pen-based computers
AVI '96 Proceedings of the workshop on Advanced visual interfaces
Semiology of graphics
A study of people's sketching habits in GIS
Spatial Cognition and Computation
A framework for a dynamic interactive 3D GIS for non-expert users
Proceedings of the 1st international conference on Computer graphics and interactive techniques in Australasia and South East Asia
A usability-driven approach to the development of a 3D web-GIS environment
Journal of Visual Languages and Computing
International Journal of Web Engineering and Technology
Metric details of topological line-line relations
International Journal of Geographical Information Science
Proceedings of the Working Conference on Advanced Visual Interfaces
Phenomena - A visual environment for querying heterogenous spatial data
Journal of Visual Languages and Computing
Classifying and resolving ambiguities in sketch-based interaction
International Journal of Virtual Technology and Multimedia
Qualitative matching of spatial information
Proceedings of the 18th SIGSPATIAL International Conference on Advances in Geographic Information Systems
A visual query language for uncertain spatial and temporal data
VISUAL'05 Proceedings of the 8th international conference on Visual Information and Information Systems
Querying by sketch geographical databases and ambiguities
DEXA'05 Proceedings of the 16th international conference on Database and Expert Systems Applications
Sketch map analysis using GIS buffer operation
SC'04 Proceedings of the 4th international conference on Spatial Cognition: reasoning, Action, Interaction
Geo-Mobile queries: sketch-based queries in mobile GIS-Environments
W2GIS'05 Proceedings of the 5th international conference on Web and Wireless Geographical Information Systems
Matching geo-spatial information by qualitative spatial relations
Proceedings of the 1st ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information
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To support users in querying geographic databases we have developed a system that lets people sketch what they are looking for. It closes the gap between user and information system, because the translation of a user's question into a processable query statement is delegated to the information system so that a user can focus on the actual query rather than spending time with its formulation. This system paper highlights a set of interaction methods and sketch interpretation algorithms that are necessary for pen-based querying of geographic information systems. They are part of a comprehensive prototype implementation of Spatial-Query-by-Sketch, which provides feature-based and relation-based spatial similarity retrieval.