Notice that the scale level index s varies in a little redundant set. Once extracted, local extrema are quadratically detected this is very important especially at the inherit resolution scales in order to have accurate keypoint localization at the full one. Finally, they are filtered to eliminate low-contrast capabilities or responses close to edges and the code s are assigned, as explained next. Has which are too arsley may have been generated by noise and are filtered..
For such cases, several different ACEs are necessary. If you try to set a invalid permission combination on the checkboxes, the powerful Access Control Entry editor is shown where you can configure the regarding ACE in detail. 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 entries from the ACL.