随着多媒体技术和计算机网络的飞速发展，全世界的数字图像的容量正以惊人的速度在增长。这些数字图像中包含了大量有用的信息。然而，由于这些图像是无序的分布在世界各地，图像中包含的信息无法被有效地访问和利用。这就要求有一种能够快速而准确地查找访问图像的技术，即图像检索技术。-with multimedia technology and computer network the rapid development The worldwide digital image capacity is at an alarming rate on the rise. These digital images contain a great deal of useful information. However, these images are disorderly distribution throughout the world, the images contain information can not be effectively access and use. This requires a rapid and accurate image you visit the technology, image retrieval technology.