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Applying qualitative line arrangements

Abstract

A qualitative representation and calculus for line arrangements has been introduced. In particular, we have investigated how this representation allows qualitative descriptions of polygons, forming a concise means of representing shapes’ boundaries. We shall now discuss characteristics of this representation which are related to coarse shape approximations (which maintain only specific global shape properties). We do this by employing our approach to graphically query for images. Such graphical queries are to be sketched by the user who will be looking for objects with specific characteristics. These characteristics are outlined at a coarse granularity level by the user, who is capable of sketching the desired shape only roughly. We will show that qualitative line arrangements allow us to represent these characteristics well enough to use them in querying for similar objects.

Keywords

Quantitative Approach Recall Rate Granularity Level Relevant Image Shape Property 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Deutscher Universitäts-Verlag | GWV Fachverlage GmbH, Wiesbaden 2007

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