【正文】 摘要 計算機處理能力 的 日益增強 ， 因特網(wǎng)技術的廣泛普及和網(wǎng)絡帶寬不斷提高，大量的圖像信息不斷產(chǎn)生，如何從這些海量圖像數(shù)據(jù)中搜索人們感興趣并有效利用這些圖像，成為迫切需要解決的問題。 本設計 首先 以“ Web圖像檢索”為背景 介紹了 在 Inter中 檢索圖像的基本概念和常用的兩種重要技術： 基于文本的 圖像檢索 和基于內(nèi)容的 圖像檢索 ，并 簡要 闡述了它們的 基本概念 、原理 ， 說明了目前這一領域 的 發(fā)展現(xiàn)狀 。 其次 重點介紹 了 圖像的內(nèi)容特征： 顏色特征、紋理特征和形狀特征 ， 和以圖像內(nèi)容特征為基礎的 Web圖檢索原理， 對常用的 對應 圖像檢索算法分別介紹和對比，并分析了其優(yōu)劣 性。最后 以 基于內(nèi)容的圖像檢索為重點， 利用 VC++編程工具對 Web圖像 檢索系統(tǒng)進行了模擬和驗證 。 關鍵字 ： Web 圖象檢索 ， 特征提取 ， 顏色直方圖 ， 相似度 Abstract The capacity of puter processing is in increasing , Inter technology is in popular with more and more people and work bandwidth broadens, Besides, a mass of image data information is being produced constantly ， so how to find sone image what people are interested in and to use these effectively from the Web， bee a urgent problem. Firstly, this project introduced the basic concept of Web image retrieval and two mon but important technologys :based on text image retrieval and contentbased image retrieval. and briefly describes their basic concept, principle and the current situation of the development of this field. Secondly ,it introduced the contents characteristic: color image features, the texture featuress and shape features, and theory of Web image retrieval that is based on these content features，meanwhile ,several important image retrieval algorithms used are introduced and pared, and analysed their advantages and disadvantages. Finally ,to contentbased image retrieval, Design a “Web image retrieval” system to simulate and test by using VC++ programming tool. Keywords: Web image retrieval, feature extraction, color histogram ,similarity 目 錄 摘要 ....................................................................................................................................................... 1 Abstract .................................................................................................................................................. 2 目 錄 ..................................................................................................................................................... 3 第一章 前 言 ......................................................................................................................................... 5 Web圖像檢索概述 ...................................................................................................................... 5 圖像檢索方法的研究綜述 .......................................................................................................... 5 基于文本的檢索 ................................................................................................................ 5 基于內(nèi)容的圖像檢索技術 .................................................................................................. 6 圖像檢索技術研究的三個方向 ........................................................................................... 7 圖像檢索系統(tǒng)的性能指標和評價準則 ................................................................................ 7 第二章 Web 圖像檢索原理 ...................................................................................................................... 9 基于文本的圖像檢索 ................................................................................................................. 9 基于內(nèi)容的圖像檢索 ............................................................................................................... 10 體系結構 ....................................................................................................................... 10 查詢模塊 ....................................................................................................................... 10 特征提取模塊 ................................................................................................................. 11 常用的圖像特征 ............................................................................................................. 11 匹配模塊 ........................................................................................................................ 12 相似性度量函數(shù) .............................................................................................................. 13 第三章 基于內(nèi)容的圖像顏色特征提取 .................................................................................................. 15 常用的顏色模型 ....................................................................................................................... 15 RGB模型 ....................................................................................................................... 15 HSV模型 ....................................................................................................................... 16 L*a*b 模型 ..................................................................................................................... 16 模型 ....................................................................................................................... 16 顏色特征的提取 ....................................................................................................................... 17 顏色直方圖 ..................................................................................................................... 17 顏色矩 ............................................................................................................................ 18 顏色聚合向量 ................................................................................................................. 18 圖像特征的相似性匹配 ............................................................................................................. 19 直方圖 相交法 ................................................................................................................. 19 歐氏距離方法 ................................................................................................................. 20 模糊方法 ...........