一个用鼠标滚轮放大缩小图片的示例，就像windows图片与传真查看器的相应功能一样-a simple demo on how to resize the picture with mouse wheel

可以再实时录像中手动任意截取图片，并根据实际路口信息把数据和图片保存到oracle数据库中，还可以从数据库中查询数据和图片并显示-we can snap picture from real video autoblly,save road info and picture to the oracle database,and also query data and picture from database,

简单的实现图片查询 实现一个简单的过程-The realization of the simple query image The implementation of a simple process