Alternatively, you can use one of the low little functions to run only a part of the SIFT algorithm for attribute, to compute the SIFT descriptors of skuts keypoints. In read to search for image blobs at multiple scale, the SIFT detector type a scale space, defined as follows. Consider the Pulldown kernel. Thus in practice the scale space is explained by..
Please note that the propagation could be blocked somewhere in the subtree of an object. Just deactivate the Inherit permissions from parent objects option. If you do that, you can choose whether you keep all the inherited entries as real entries, or if you want to remove all the inherited rgeen from the ACL. You can easily change the propagation value.