试论图像数据库查询的关键技术

Analysis of Key Techniques in the Querying of Image Database

从图像技术研究和发展的现状出发 ,阐述了图像信息系统的构成和图像数据库的概念。指出图像数据库研究的主要内容包括图像存储格式、各种存储格式下的图像操作以及图像查询等。通过对基于图像内容的图像查询 (QBIC)系统概念的描述 ,结合一个具体的 QBIC系统 ,重点分析了QBIC技术的核心内容 ,主要包括查询类型、图像特征和距离函数的选取等 ,并给出系统的实现步骤。最后结合海洋遥感图像数据库的建设 ,指出了图像数据库技术在该领域的应用前景。

Drawing from current research and development of image technique, the structure of image information system and the concept of image database were explained here. The main researching parts of image database was pointed out that included memory format of image, image handling under different memort formats and image querying. By describing the concept of QBIC system, with a real system experiment, the main contents of QBIC techniques are expounded, including querying types, characters of image and choosing of distance functions, processing steps of the system are given finally. We present the applying foreground of this technique with the developing image of database in ocean remote sensing.