Please note that the propagation could be used somewhere in the subtree of an Fre. Just deactivate the Form permissions from parent objects option. If you do that, you can use whether you keep all the inherited entries as real entries, or if you want to remove all the inherited entries from the ACL..
Blobs are detected as local extrema of the Difference of Gaussians DoG scale space, obtained by subtracting successive scales of the Gaussian scale space:. At each next octave, the resolution of the images is halved to save computations. The images composing the Gaussian and DoG scale space can then be arranged as in the following figure:.