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A Knowledge-Based Approach to Visual Information

机译:基于知识的视觉信息方法

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We propose an approach based on description logics for the representation and retrieval of visual information. We first consider objects as having shapes which are described by means of semi-algebraic sets. We propose a model which consists of three layers: (1) Shape Layer, which provides the geometric shapes of image objects; (2) Object Layer, intended to contain objects of interest and their description; and (3) Schema Layer, which contains the structured abstractions of objects, i.e., a general schema about the classes of objects represented in the Object Layer. We propose two abstract languages on the basis of description logics: one for describing knowledge of the object and schema layers, and the other, more expressive, for making queries. Queries can refer to the form dimension (i.e., information of the Shape Layer) or to the semantic dimension (i.e., information of the Object Layer). We show how this framework can be easily extended to accommodate the visual layer (e.g., color and texture).
机译:我们提出了一种基于描述逻辑的表示和检索视觉信息的方法。我们首先考虑对象具有通过半代数集描述的形状。我们提出了一个由三层组成的模型:(1)形状层,提供图像对象的几何形状; (2)对象层,旨在包含感兴趣的对象及其描述; (3)模式层,它包含对象的结构化抽象,即有关对象层中表示的对象类的一般模式。我们在描述逻辑的基础上提出了两种抽象语言:一种用于描述对象和模式层的知识,另一种更具表达性,用于进行查询。查询可以指表单维度(即“形状层”的信息)或语义维度(即“对象层”的信息)。我们展示了如何轻松扩展此框架以适应视觉层(例如颜色和纹理)。

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