基于内容的图像检索，里面也包含了图像语义方面的内有，比如关键字的提取 特征向量的提取等待,Content-based Image Retrieval, which also contains images, there are semantic aspects, such as keyword extraction extraction eigenvector wait

利用QT实现影像数据的检索和获取，基于影像数据的描述信息，分为基于关键字检索和基于经纬度范围检索。-Using QT to achieve image data retrieval and acquisition, based on image data descr iption information, classified based on keyword search and retrieval based on the latitude and longitude range.