sift算法的c算法，基于opencv的，一个大牛写得，很厉害的。-c algorithms sift algorithm, based on the opencv, a large cattle write, it is powerful.

Sorting using arraylist

C# 把指定控件显示在最上面，通过设置一个ArrayList队列来实现。别忘了添加system..Collections命名空间-C# to specify the controls appear at the top, by setting an ArrayList queue to achieve. Do not forget to add the system .. Collections namespace