First, it uses the HSI color space to compress the color space to 72 kinds of representative colors,and then designs 12 overlapped sub-regions to get the color accumulative histogram in each region.

• 该方法使用符合人类视觉特性的HSI颜色模型将颜色空间压缩为72种具有代表性的颜色,设计了一种具有重叠方式的图像分块方法;