It is a fuzzy inquiry technology in fact.Through extracting the characteristic of the image, we may find out the image that is most close to the enquiring requirement in the characteristic space.

• 基于内容的图像检索不同于传统的基于文本的图像检索，它实际上是一种模糊查询技术，通过对图像数提取一定的特征，找出在特征空间中与查询要求最接近的图像。