The GIFT (the GNU Image-Finding Tool) is a Content Based Image Retrieval System (CBIRS: http://en.wikipedia.org/wiki/CBIR). It enables you to do Query By Example (QBE: http://en.wikipedia.org/wiki/QBE) on images, giving you the opportunity to improve

一个非常好的多功能的基于内容的图像检索系统，界面简洁易操作-A very good multi-purpose content-based image retrieval systems, the interface simple and easy to operate

content based image retrieval abstract