A Pictorial Language for the Retrieval of Spatial Relations from Image Databases
نویسندگان
چکیده
The paper describes a Pictorial Query-By-Example (PQBE) aimed at the retrieval of direction relations from Image Databases. PQBE incorporates several features such as object, image and relation retrieval, union, intersection etc. Unlike verbal query languages it does not presume knowledge of keywords for spatial relations on behalf of the user, nor familiarity with database models, but complex spatial conditions are expressed in a straightforward manner. Furthermore, with the incorporation of some additional features, such as topological relations, distances and class retrieval, PQBE can be used as an intuitive GIS interface, independently of the underlying representation.
منابع مشابه
Content Based Radiographic Images Indexing and Retrieval Using Pattern Orientation Histogram
Introduction: Content Based Image Retrieval (CBIR) is a method of image searching and retrieval in a database. In medical applications, CBIR is a tool used by physicians to compare the previous and current medical images associated with patients pathological conditions. As the volume of pictorial information stored in medical image databases is in progress, efficient image indexing and retri...
متن کاملA Pictorial Query-by-Example Language
A symbolic image is an array representing a set of objects and a set of spatial relations among them. Symbolic images and related structures have been used in a number of applications including Image Databases, Spatial Reasoning, Path Planning and Spatial Pattern Matching. In this paper we describe a Pictorial Query-By-Example (PQBE) language aimed at the retrieval of direction relations from s...
متن کاملA Three-Dimensional Iconic Environment for Image Database Querying
Retrieval by contents of images from pictorial databases can be effectively performed through visual icon-based systems. In these systems, the representation of pictures with 2D strings, which are derived from symbolic projections, provides an efficient and natural way to construct iconic indexes for pictures and is also an ideai representation for the visual query. With this approach, retrieva...
متن کاملInvariant-Based Shape Retrieval in Pictorial Databases
One of the strongest cues for retrieval of content information from images is shape. However, due to the wide range of transformations that an object might undergo, this is also the most difficult one to handle. It seems that shape retrieval is one of the major barriers nowadays to image databases being commonly used. We present an approach for shape retrieval from pictorial databases which is ...
متن کاملA Filter Flow Visual Querying Language and Interface for Spatial Databases
In this paper a visual approach to querying in spatial databases is presented. A filter flow methodology is used to consistently express different types of queries in these systems. Filters are used to represent operations on the database and pictorial icons are used throughout the language in filters, operators and spatial relations. Different granularities of the relations are presented in hi...
متن کامل