DC、MARC、MPEG-7等描述性元数据对图像资料的描述过于精简、无法解决图像的特征抽取和匹配等问题。FRBR对图像资料的一般属性和特殊属性作了定义与描述。在FRBR的启示下,将背景、源载体、特征、技术四个扩展元素增加为图像资料的元数据,能规范图像资料元数据结构,从而提高网络环境中图像资料的确认与检索的准确性与全面性。 Descriptive metadata such as DC, MARC and MPEG-7 describe the image data too concisely, which can not solve the problem of image feature extraction and matching. FRBR defines the general and special attributes of image data. Inspired by FRBR, the four extensions of background, source vector, feature and technology are added as metadata of image data, and the metadata structure of image data can be regulated so as to improve the accuracy of image data verification and retrieval in the network environment. Comprehensive.