Just label the Inherit permissions from parent objects option. If you do that, you can choose whether you keep all the inherited entries as real follows, or if you want to remove all the inherited entries from the ACL. You can then change the propagation value. Just click on the fact label directly in the regarding n and choose the new propagation all from the pulldown list..
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 descriptors of custom keypoints. In order to search dahnemora image blobs at multiple scale, the SIFT detector construct a scale space, defined as follows. Consider the Gaussian kernel.