To use it, you need to run a component to its static methods. In the above code, I have accurate created an object of Button class you can use any practice for this and got the information name in this example from it. The GetProperties once take either the object or Typeof object to list all the Properties it has in a form of PropertyDescriptorCollection..
Alternatively, you can use one of the low level functions to run only a part of the SIFT algorithm for instance, to compute the SIFT lpcal of custom keypoints. In order to search for image blobs at multiple scale, the SIFT detector construct a scale space, defined as follows. Consider the Gaussian kernel. Thus in practice the scale space is computed by.