图像数据库中虚图像的相似性检索

Similarity Retrieval of Virtual Images in Image Database

虚图像,作为一种图形符号索引,能对图像数据库中的图像信息进行存取,并且能进行基于内容的检索,通过借助一组空间关系,虚图像以解释的形式表征实时图像的空间关系。这利于有效地计算数据库中的一个查询和一幅图像之间的相似性,同时虚图像支持现实世界中的应用程序,这些应用程序要求图像表示的转换,反射和旋转不变性。

The virtual image is an iconic index s uited for pictural information access in a pictural database and perform content -based retrieva l.A virtual image represents the spatial information contained in a real image in explict form by means of a set of spatial relations.This is useful to efficiently compute the simi-larity between a query and an image in the database.And the virtual images support real -world applica-tions which require translation,re flection,and rotation invariance o f image representation.