The traditional float vector based image feature is the base of content based image retrieval techniques.

传统的以浮点矢量形式表示的图像特征，是基于内容的图像检索技术的基础。

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Content based image retrieval techniques usually use the color histogram of the full image. But this method can't contain the spatial features.

基于内容的图象检索技术一般采用颜色直方图为特征，但是这种方法不能反映空间特性。

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The main features used for image retrieval are color, texture and shape. This thesis looks into image retrieval techniques based on color and texture.

基于内容的图像检索技术主要利用图像的颜色、纹理和形状特征对图像进行检索，论文重点研究基于颜色和纹理特征的图像检索技术。

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