A Content-Oriented Image Metadata Model

This paper presents a content-oriented image metadata model. It aims to provide a standard metadata specification focusing on describing the information relevant to contents and topics of images, and enable different kinds of users to label an image in an effective and unified way. The model is also a key part of rich tag system (RTS), with which we can easily use controlled tags to fill metadata properties. RTS and the image metadata model have been applied to some practical applications, and been demonstrated to be effective and worthy of spreading.