实现基于内容的图象检索系统的关键问题是实现图象的语义分割。

To access these image databases automatically and on demand requires the system of content-based image retrieval (CBIR).

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在基于内容的图象检索中，颜色作为图象的一种重要视觉信息，已得到广泛应用。

Within the image retrieval based on the content, the color, being an important vision information of image, have been used broadly.

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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。

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

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