Indexing

4

Automatic indexing of images

Abstract:

Basic techniques of automatic image indexing are discussed: context-based indexing, content-based indexing and automatic image annotation. Context-based indexing relies on the words surrounding the image and assumes that they express the content of the image. Content-based indexing uses one or more aspects of the image itself, e.g. the colour, the texture, etc. to make the image retrievable. Automatic image annotation compares some characteristics of the image to those of the images in a sample database which has been indexed manually. It assumes that images that have certain features in common express the same content. Although the engineering behind the three techniques may be quite advanced and difficult ...