How to query by texture of image in web has also been studied in this thesis . there are two methods that have been mentioned : ( 1 ) using distance of spatial histogram to measure the similarity between images ; ( 2 ) using distance of a composed of four features detected from spatial dependent matrix to measure the similarity between images 在這一部分,采用了兩種不同的紋理特征描述方法,分別是: ( 1 )利用圖像灰度直方圖距離度量圖像紋理的相似度; ( 2 )利用圖像灰度共生矩陣的四個特征值:均勻度、對比度、相關(guān)和熵所構(gòu)筑的向量距離來度量圖像紋理的相似度。