本文以基于内容的图像检索为主，对检索系统的关键技术特别是图像特征提

取方面做了深入的研究。提出了一种结合图像颜色特征与图像语义特征的图像检

索新方法，克服了单纯的基于内容图像检索未曾考虑图像内容特征与其语义之间

鸿沟的缺点。-This dissertation briefly summarizes CBIR system，and researches some key

techniques of the image retrieval which specially focuses on feature extraetion．In this

paper we proposes a new method for image retrieval，it makes use of both content

feature and semantic feature of images．